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Carestation 620/650/650c (A1/A2)
Technical Reference Manual
Software Revision 01
Table of Contents
1 Introduction 
1.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.1.1 Main Machine SN Information . . . . . . . . . . . . . . . . . . . . . . 1-3
1.1.2 Main Machine UDI Information . . . . . . . . . . . . . . . . . . . . . 1-3
1.1.3 Technical competence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.1.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
1.1.5 Important . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
1.2 What this manual includes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
1.2.1 Other equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
1.3 User's Reference Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1.4 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1.5 System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
1.6 Feature overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-15
1.7 Display control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18
1.7.1 Touch points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
1.8 Anesthesia system display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
1.8.1 Digit field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-22
1.8.2 Waveform fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
1.8.3 Split screen field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
1.9 Display navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
1.9.1 Using menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-24
1.9.2 Using the ComWheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
1.9.3 Using quick keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
1.10 System information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
1.10.1 System classification . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
1.10.2 Device standards IEC 60601-1:2005 . . . . . . . . . . . . . . .1-26
1.10.3 Device standards IEC 60601-1:1988 . . . . . . . . . . . . . . .1-26
1.10.4 Environmental requirements . . . . . . . . . . . . . . . . . . . . . 1-27
1.10.5 Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
1.10.6 Communication with external devices . . . . . . . . . . . . . . 1-30
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1.11 Symbols used in the manual or on the equipment . . . . . . . . . 1-32
1.11.1 Symbols used on the equipment . . . . . . . . . . . . . . . . . . 1-32
1.11.2 Symbols used on the user interface . . . . . . . . . . . . . . . .1-35
1.12 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-36
2 Theory of Operation 
2.1 Electrical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.2 Power subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.2.1 AC-DC power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.2.2 Power Management Board . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.2.3 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.3 System communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.3.1 Software Power On Self Test (POST) . . . . . . . . . . . . . . . . 2-9
2.4 Display Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.4.1 Display Unit connections . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.5 Anesthesia Computer Board . . . . . . . . . . . . . . . . . . . . . . . . . . .2-14
2.6 Frame Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
2.7 Lights and digital LED flow display boards . . . . . . . . . . . . . . . . 2-19
2.7.1 Digital LED flow display board . . . . . . . . . . . . . . . . . . . . . 2-19
2.7.2 Top task light boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
2.7.3 Bottom task light board . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2.7.4 ACGO LED light and microswitch . . . . . . . . . . . . . . . . . . 2-20
2.7.5 Aux O2 + Air LED light and microswitch . . . . . . . . . . . . . 2-21
2.8 Sensor Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2.9 Mixer solenoid valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
2.10 Gas flow through the anesthesia machine . . . . . . . . . . . . . . . 2-25
2.10.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-25
2.10.2 System pneumatic circuits . . . . . . . . . . . . . . . . . . . . . . . 2-27
2.10.3 Suction regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
2.10.4 Flow control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
2.11 Flow through the breathing system . . . . . . . . . . . . . . . . . . . . . 2-32
2.11.1 Overview of flow paths . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
2.11.2 Manual ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-32
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2.11.3 Mechanical ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
2.11.4 Fresh gas and O2 flush flow (with ACGO) . . . . . . . . . . .2-38
2.12 Ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
2.12.1 Safety features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
2.13 Ventilator mechanical subsystems . . . . . . . . . . . . . . . . . . . . . 2-41
2.13.1 Drive gas filter and Gas Inlet Valve . . . . . . . . . . . . . . . . 2-41
2.13.2 Pressure regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
2.13.3 Inspiratory flow control valve . . . . . . . . . . . . . . . . . . . . . 2-42
2.13.4 Drive gas flow sensor . . . . . . . . . . . . . . . . . . . . . . . . . . .2-43
2.13.5 Drive gas check valve . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
2.13.6 Bellows pop-off valve . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44
2.13.7 Exhalation valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
2.13.8 Mechanical overpressure valve . . . . . . . . . . . . . . . . . . . 2-46
2.13.9 Reservoir and bleed resistor . . . . . . . . . . . . . . . . . . . . . 2-47
2.13.10 Free breathing valve . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
2.13.11 Breathing circuit flow sensors . . . . . . . . . . . . . . . . . . . 2-48
3 Checkout Procedures 
3.1 Inspect the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.1.1 Verify annunciators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
3.2 System checkout overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.3 System checkout procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.3.1 Full Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.3.2 Test Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.4 Individual tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
3.4.1 Ventilator Leak test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
3.4.2 Vaporizer Leak test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
3.4.3 Gas Controls test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.4.4 Circuit Leak test . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 3-13
3.4.5 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.5 Low pressure leak test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3.5.1 Low pressure leak test (with ACGO) . . . . . . . . . . . . . . . . 3-14
3.5.2 Low pressure leak test (without ACGO) . . . . . . . . . . . . . 3-15
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3.6 Bellows drop test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
3.7 Pipeline and cylinder tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.7.1 Cross-Connect and high pressure leak test . . . . . . . . . . 3-19
3.7.2 O2 supply alarm test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3.8 Flow sensing test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-21
3.9 Flow control test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
3.10 Flush flow test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
3.11 Vaporizer back pressure and interlock test . . . . . . . . . . . . . . . 3-26
3.12 Alarm tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-27
3.13 Auxiliary O2 flowmeter tests . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
3.14 Integrated suction regulator tests (if equipped) . . . . . . . . . . . 3-30
3.14.1 Gauge accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
3.14.2 Flow test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
3.14.3 Regulation test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
3.14.4 Vacuum bleed test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
3.14.5 Vacuum leak test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
3.15 Power failure test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-32
3.16 Electrical safety test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
4 Installation and Service Menus 
4.1 Installation and Service menu structure . . . . . . . . . . . . . . . . . . . 4-3
4.1.1 Menu structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.2 Super User . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
4.3 Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
4.4 Installation menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.4.1 Configuration menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.4.2 Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.4.3 Leakage Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.4.4 Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.5 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.5.1 Options Key-Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.5.2 Installed Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
4.5.3 Options Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
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4.6 Copy Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4.6.1 Configurable Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4.7 Software/Hardware Information menu . . . . . . . . . . . . . . . . . . . 4-13
4.8 Service Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4.9 Calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4.9.1 User Calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
4.9.2 Manifold P Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
4.9.3 Inspiratory Flow Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
4.9.4 Bleed Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
4.9.5 Paw Span (or Paw and ACGO Span) . . . . . . . . . . . . . . . 4-20
4.9.6 Zero Gas Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
4.9.7 Mixer Flow Sensor Zero . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
4.9.8 Zero ACGO (or Zero AGSS or Zero ACGO and AGSS)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
4.10 Display Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-25
5 Calibration 
5.1 Primary regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.1.1 Test setup for primary regulators . . . . . . . . . . . . . . . . . . . . 5-3
5.1.2 Testing primary regulators . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.1.3 Adjusting primary regulators . . . . . . . . . . . . . . . . . . . . . . . 5-6
5.2 Secondary regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.2.1 Testing/Adjusting secondary regulators or balance
regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
5.3 Flow control needle valves calibration . . . . . . . . . . . . . . . . . . . 5-10
5.3.1 Flow control needle valves calibration setup . . . . . . . . . . 5-10
5.3.2 O2 needle valve calibration (minimum flow) . . . . . . . . . . 5-11
5.3.3 N2O needle valve calibration (minimum flow) . . . . . . . . . 5-14
5.3.4 Air needle valve calibration (minimum flow) . . . . . . . . . . 5-18
5.4 Link system calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
5.5 Adjust drive gas regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
5.6 Ventilator calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
5.6.1 Manifold P Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
5.6.2 Inspiratory Flow Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
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5.6.3 Bleed Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
5.6.4 Paw Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32
5.6.5 Paw and ACGO Span . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34
5.6.6 Zero Gas Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35
5.6.7 Mixer Flow Sensor Zero . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35
5.6.8 Zero ACGO (or Zero AGSS or ACGO and AGSS) . . . . . 5-36
6 Installation and Functional Checks 
6.1 Installation checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.2 Free breathing valve maintenance . . . . . . . . . . . . . . . . . . . . . . . 6-5
6.3 Pressure limit circuit test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6.3.1 Test procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6.4 MOPV pressure relief valve test . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
6.4.1 Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
6.4.2 Test procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
6.5 ACGO pressure relief valve test . . . . . . . . . . . . . . . . . . . . . . . . 6-10
6.6 Scavenger positive relief functional check (for machine with
Passive AGSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
6.7 Auxiliary O2 flowmeter tests . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
6.7.1 Functional test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
6.7.2 Flow accuracy test . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 6-12
6.8 Integrated suction regulator tests . . . . . . . . . . . . . . . . . . . . . . . 6-13
6.8.1 Gauge accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
6.8.2 Flow test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
6.8.3 Regulation test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
6.8.4 Vacuum bleed test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
6.8.5 Vacuum leak test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
6.9 Battery capacity test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
6.9.1 Test procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
6.10 Installing a secondary monitor . . . . . . . . . . . . . . . . . . . . . . . . 6-16
7 Troubleshooting 
7.1 Troubleshooting guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
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7.2 Troubleshooting high pressure and low pressure leaks . . . . . . . 7-4
7.3 Troubleshooting Failed state . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6
7.4 Troubleshooting Startup Screen (POST) messages . . . . . . . . . 7-7
7.5 Troubleshooting the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
7.6 Breathing system leak test guide . . . . . . . . . . . . . . . . . . . . . . . . 7-9
7.6.1 Check valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
7.7 System Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . . . 7-11
7.7.1 Display Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . .7-12
7.7.2 Inaccurate Volume Ventilation Troubleshooting . . . . . . . 7-13
7.7.3 No Ventilation Troubleshooting . . . . . . . . . . . . . . . . . . . . 7-14
7.7.4 High Intrinsic PEEP Troubleshooting . . . . . . . . . . . . . . . .7-15
7.7.5 ACB Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
7.7.6 ACB - FIB Communication Troubleshooting . . . . . . . . . . 7-17
7.7.7 DU - ACB Communication Troubleshooting . . . . . . . . . . 7-18
7.7.8 FIB troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19
7.7.9 LED related troubleshooting . . . . . . . . . . . . . . . . . . . . . . 7-20
7.7.10 Airway Module Troubleshooting . . . . . . . . . . . . . . . . . . .7-21
7.7.11 System Malfunction Screen Troubleshooting . . . . . . . . 7-22
7.8 System Malfunction and Gas Control Failure Flowchart Table
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23
7.9 Technical alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24
7.10 SIB Pneumatic Sense Tubing Leak Test . . . . . . . . . . . . . . . . 7-44
7.11 Flow sensor accuracy test . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-45
8 Software Download 
8.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8.1.1 Main Menu and System Information . . . . . . . . . . . . . . . . . 8-2
8.2 Software Download . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
8.2.1 Download process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
8.2.2 Download complete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
8.3 Software compatibility check . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5
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03 17 2076163-001 vii
9 Repair Procedures 
9.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
9.2 Circuit board replacement precautions . . . . . . . . . . . . . . . . . . . . 9-7
9.3 KEY/BID label (Key Code) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9
9.4 How to bleed gas pressure from the machine . . . . . . . . . . . . . 9-10
9.5 How to remove the rear panels . . . . . . . . . . . . . . . . . . . . . . . . . 9-11
9.5.1 How to remove the cylinder cover . . . . . . . . . . . . . . . . . . 9-11
9.5.2 How to remove the rear upper panel . . . . . . . . . . . . . . . . 9-11
9.5.3 How to remove the rear lower panel . . . . . . . . . . . . . . . . 9-12
9.6 How to remove the tabletop . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13
9.7 How to remove the top shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14
9.8 Servicing the power components . . . . . . . . . . . . . . . . . . . . . . . 9-15
9.8.1 Replacing the PMB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-15
9.8.2 Replacing the universal AC-DC power supply board . . . 9-16
9.8.3 Replacing the batteries . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18
9.8.4 Replacing the fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19
9.8.5 Replacing the fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-20
9.9 Replacing the ACB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22
9.10 Replacing the FIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-24
9.11 Replacing the SIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25
9.11.1 Replacing the SIB filters and rubber ports . . . . . . . . . . . 9-26
9.12 Servicing the Vent Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-28
9.12.1 Removing the Vent Engine . . . . . . . . . . . . . . . . . . . . . . 9-28
9.12.2 Servicing the Vent Engine components . . . . . . . . . . . . .9-29
9.12.3 Replacing Gas Inlet Valve components . . . . . . . . . . . . . 9-32
9.13 Servicing the pipeline inlet manifold components . . . . . . . . . 9-33
9.13.1 Replacing pipeline inlet filter . . . . . . . . . . . . . . . . . . . . . 9-33
9.13.2 Replacing pipeline inlet check valve . . . . . . . . . . . . . . . 9-33
9.13.3 Replacing the pipeline inlet manifold . . . . . . . . . . . . . . . 9-34
9.13.4 Replacing the pipeline gas-supply pressure
transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35
9.14 Servicing the cylinder supply modules . . . . . . . . . . . . . . . . . . 9-37
9.14.1 Replacing the primary regulator module . . . . . . . . . . . . 9-37
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9.14.2 Replacing the cylinder inlet filter . . . . . . . . . . . . . . . . . . 9-38
9.14.3 Replacing the cylinder check valve . . . . . . . . . . . . . . . . 9-38
9.15 Replacing the O2 flush valve . . . . . . . . . . . . . . . . . . . . . . . . . 9-39
9.16 Servicing the breathing system components . . . . . . . . . . . . . 9-40
9.16.1 Replacing the inspiratory/expiratory ports . . . . . . . . . . . 9-41
9.16.2 Replacing the Bag/Vent switch and the CO2 bypass . . 9-42
9.16.3 Replacing the APL valve . . . . . . . . . . . . . . . . . . . . . . . . 9-44
9.16.4 Replacing the flow sensors . . . . . . . . . . . . . . . . . . . . . . 9-45
9.16.5 Replacing the inspiratory/expiratory check valve . . . . . 9-45
9.16.6 Replacing the canister holder . . . . . . . . . . . . . . . . . . . . 9-46
9.16.7 Servicing the bellows assembly . . . . . . . . . . . . . . . . . . .9-48
9.17 Replacing the bag arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-51
9.18 Servicing the gas control components . . . . . . . . . . . . . . . . . . 9-52
9.18.1 Replacing the secondary regulator manifold or balance
regulator manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-52
9.18.2 Replacing the O2 or N2O needle valve (on machines
with N2O) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-53
9.18.3 Replacing an Air needle valve on all machines or an
O2 needle valve on machines without N2O . . . . . . . . . . . . . . . 9-55
9.18.4 Replacing the Link - 25 assembly . . . . . . . . . . . . . . . . . 9-56
9.19 Servicing vaporizer manifold parts . . . . . . . . . . . . . . . . . . . . . 9-57
9.19.1Repairing manifold port valve . . . . . . . . . . . . . . . . . . . . 9-57
9.19.2 Checkout procedure for manifold port valve . . . . . . . . . 9-58
9.19.3 Replacing the vaporizer manifold . . . . . . . . . . . . . . . . . .9-59
9.20 Replacing the auxiliary O2 flowmeter . . . . . . . . . . . . . . . . . . . 9-61
9.21 Replacing the suction regulator . . . . . . . . . . . . . . . . . . . . . . . 9-62
9.22 Replacing the On/Standby switch . . . . . . . . . . . . . . . . . . . . . .9-64
9.23 Servicing the ACGO module . . . . . . . . . . . . . . . . . . . . . . . . . .9-66
9.23.1 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-66
9.23.2 Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-68
9.23.3 Test procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-69
9.24 Servicing the AGSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-70
9.24.1 Servicing the scavenger positive relief valve (for
machines with Passive AGSS) . . . . . . . . . . . . . . . . . . . . . . . . . 9-70
9.24.2 Servicing the Active AGSS . . . . . . . . . . . . . . . . . . . . . . .9-70
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03 17 2076163-001 ix
9.25 Servicing the task lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-72
9.25.1 Replacing the left top task light . . . . . . . . . . . . . . . . . . . 9-72
9.25.2 Replacing the central vaporizer task light . . . . . . . . . . . 9-73
9.25.3 Servicing the right top task light assembly . . . . . . . . . . 9-73
9.25.4 Replacing the bottom task light . . . . . . . . . . . . . . . . . . . 9-74
9.26 Replacing the casters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-76
9.26.1 Replacing the casters (without central brake) . . . . . . . . 9-76
9.26.2 Replacing the front casters (with central brake) . . . . . . 9-77
9.27 Servicing the display unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-81
9.27.1 Disassembling the DU . . . . . . . . . . . . . . . . . . . . . . . . . . 9-82
9.27.2 Replacing the Carrier board and Com Express board
assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-83
9.27.3 Replacing the front assembly (including LCD/Touch
Bezel assembly) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-84
9.27.4 Replacing the CPU “coin” battery . . . . . . . . . . . . . . . . . 9-85
9.27.5 Replacing the encoder . . . . . . . . . . . . . . . . . . . . . . . . . . 9-86
9.27.6 Replacing the speaker . . . . . . . . . . . . . . . . . . . . . . . . . . 9-86
9.28 Replacing the display unit cables . . . . . . . . . . . . . . . . . . . . . . 9-88
9.29 Replacing the display arm . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-89
9.30 Display arm adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-91
9.31 Replacing the transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-94
9.31.1 Replacing the transformer (for machines with drawers)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-94
9.31.2 Replacing the transformer (for machines without
drawers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-96
9.32 Replacing the Tec 7 filler cap or filler cap O-ring . . . . . . . . . . 9-99
10 Illustrated Parts 
10.1 Service tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4
10.1.1 Software tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-4
10.1.2 Test devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4
10.1.3 Manifold pressure test adapter . . . . . . . . . . . . . . . . . . . 10-5
10.1.4 Flow sensing test adapter . . . . . . . . . . . . . . . . . . . . . . . 10-5
10.1.5 Lubricants and Adhesives . . . . . . . . . . . . . . . . . . . . . . . 10-6
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10.1.6 Touch-up Paint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6
10.1.7 Test tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6
10.2 External components - front view . . . . . . . . . . . . . . . . . . . . . . 10-8
10.3 External components - front view references . . . . . . . . . . . . 10-10
10.4 External components - rear view . . . . . . . . . . . . . . . . . . . . . .10-11
10.5 Tabletop components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12
10.6 Middle pan components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-13
10.7 Vent Engine assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-14
10.7.1 Gas Inlet Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-15
10.7.2 Vent Engine subassemblies . . . . . . . . . . . . . . . . . . . . .10-16
10.7.3 Vent Engine manifold . . . . . . . . . . . . . . . . . . . . . . . . . . 10-17
10.7.4 Drive gas check valve . . . . . . . . . . . . . . . . . . . . . . . . . 10-18
10.8 Top shelf components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-19
10.9 AC power cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-21
10.10 AC Inlet/Outlet components . . . . . . . . . . . . . . . . . . . . . . . . 10-22
10.11 Drawer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-24
10.12 Display Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-25
10.13 Light boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-27
10.14 AUX O2 assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-28
10.15 AUX O2 + Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-29
10.16 O2 flush assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-30
10.17 ACGO assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-31
10.18 Vaporizer manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-32
10.19 Rear upper panel and enclosure components . . . . . . . . . . 10-33
10.20 Pipeline inlet fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-35
10.21 Cylinder gas supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-37
10.21.1 Cylinder inlet fittings . . . . . . . . . . . . . . . . . . . . . . . . . . 10-38
10.22 Breathing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-39
10.22.1 Bellows assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-40
10.22.2 Breathing system upper assembly . . . . . . . . . . . . . . .10-41
10.22.3 Breathing system lower assembly . . . . . . . . . . . . . . . 10-42
10.22.4 Bag/Vent switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-43
10.22.5 Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-44
10.22.6 Inspiratory/Expiratory ports assembly . . . . . . . . . . . . 10-45
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03 17 2076163-001 xi
10.22.7 O2 cell assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-46
10.22.8 Breathing system lower housing . . . . . . . . . . . . . . . . 10-47
10.22.9 APL valve assembly . . . . . . . . . . . . . . . . . . . . . . . . . .10-48
10.22.10 Absorber canister . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-49
10.22.11 Canister lifter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-50
10.23 Bag arm and breathing system protector . . . . . . . . . . . . . . 10-51
10.24 Passive AGSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-52
10.25 Active AGSS* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-54
10.26 Integrated suction regulator - major components . . . . . . . .10-56
10.27 Suction control module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-57
10.28 Venturi assembly . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .10-58
10.29 Display arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-59
10.30 Flip shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-60
10.31 Pendant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-61
10.32 Cables and harnesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-62
10.33 Cable management arms . . . . . . . . . . . . . . . . . . . . . . . . . . 10-63
10.34 Tubing for use with Legris fittings . . . . . . . . . . . . . . . . . . . . 10-64
10.35 Tubing - Gas supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-66
10.36 Tubing - Mixed gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-68
10.37 Tubing - Suction control . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-70
10.38 Legris quick-release fittings . . . . . . . . . . . . . . . . . . . . . . . . 10-71
10.39 Vaporizer service parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-72
10.39.1 G-Flange seal replacement kits . . . . . . . . . . . . . . . . . 10-72
10.39.2 Tec 6 Plus Fixed Filler service parts kits . . . . . . . . . . 10-72
10.39.3 Tec 7 service parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-73
11 Schematics and Diagrams 
11.1 System pneumatic circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-2
11.2 Electrical system block diagram . . . . . . . . . . . . . . . . . . . . . . . 11-4
11.3 Anesthesia Computer Board block diagram . . . . . . . . . . . . . . 11-5
11.4 Power Management Board block diagram . . . . . . . . . . . . . . . 11-6
11.5 Sensor Interface Board block diagram . . . . . . . . . . . . . . . . . . 11-7
11.6 Frame Interface Board block diagram . . . . . . . . . . . . . . . . . . . 11-8
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11.7 Cabling block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-9
11.8 AC inlet module schematics . . . . . . . . . . . . . . . . . . . . . . . . . 11-10
12 Service Application 
12.1 Service Application (PC based) . . . . . . . . . . . . . . . . . . . . . . . 12-3
12.1.1 PC requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3
12.2 Startup screen - System Status . . . . . . . . . . . . . . . . . . . . . . . 12-4
12.2.1 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-4
12.3 System schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-5
12.3.1 Power Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-5
12.3.2 Gas Delivery Schematic . . . . . . . . . . . . . . . . . . . . . . . . .12-5
12.3.3 Vent Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-6
12.4 Menu items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-8
12.5 File menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-9
12.5.1 File - Preferences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-9
12.6 Tools menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-10
12.6.1 Communication Status . . . . . . . . . . . . . . . . . . . . . . . . . 12-10
12.6.2 System Calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-10
12.6.3 Transfer Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-11
12.6.4 Planned Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . .12-11
12.7 Power Diagnostics menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13
12.7.1 Power Diagnostics - Power Management Board . . . . .12-13
12.7.2 Power Diagnostics - Anesthesia Computer Board
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-14
12.7.3 Power Diagnostics - Frame Interface Board Power . . 12-14
12.7.4 Power Diagnostics - Sensor Interface Board Power . . 12-14
12.7.5 Power Diagnostics - Display Unit Power . . . . . . . . . . . 12-14
12.8 Gas Delivery Subsystem menu . . . . . . . . . . . . . . . . . . . . . . .12-16
12.8.1 Gas Delivery Subsystem - Gas Supply Status . . . . . . 12-16
12.8.2 Gas Delivery Subsystem - Mixer Output/Gas Delivery
Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-16
12.9 Vent Subsystem menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-18
12.9.1 Vent Subsystem - Vent Status . . . . . . . . . . . . . . . . . . . 12-18
12.9.2 Vent Subsystem - Vent Flow and Pressure . . . . . . . . . 12-18
Table of Contents
03 17 2076163-001 xiii
12.10 Gas Monitor menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-20
12.10.1 Gas Monitor Service . . . . . . . . . . . . . . . . . . . . . . . . . .12-20
12.11 Window menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-21
12.12 Help menu - About . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-22
13 Maintenance Procedures 
13.1 Planned Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-3
13.1.1 Planned Maintenance Checklist . . . . . . . . . . . . . . . . . . .13-3
13.1.2 Parts replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-3
13.2 Planned maintenance checkout procedure . . . . . . . . . . . . . . 13-5
13.2.1 Visual inspection procedures . . . . . . . . . . . . . . . . . . . . . 13-5
13.2.2 Verify annunciators . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-7
13.2.3 Pipeline and cylinder tests . . . . . . . . . . . . . . . . . . . . . . . 13-7
13.2.4 AGSS inspection and testing . . . . . . . . . . . . . . . . . . . . . 13-8
13.2.5 Breathing system inspection . . . . . . . . . . . . . . . . . . . . 13-10
13.2.6 Ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-12
13.2.7 Ventilator tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-13
13.2.8 Pressure limit circuit test . . . . . . . . . . . . . . . . . . . . . . . 13-14
13.2.9 MOPV pressure relief valve test . . . . . . . . . . . . . . . . . 13-15
13.2.10 Display diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . 13-16
13.2.11 Flow sensing test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-17
13.2.12 Flow control test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-18
13.2.13 ACGO pressure relief valve test . . . . . . . . . . . . . . . . 13-20
13.2.14 Auxiliary O2 flowmeter tests . . . . . . . . . . . . . . . . . . . 13-21
13.2.15 Integrated suction regulator tests (if equipped) . . . . . 13-22
13.2.16 Flush flow test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-24
13.2.17 Vaporizer back pressure and interlock test . . . . . . . . 13-24
13.2.18 Calibrating the airway module . . . . . . . . . . . . . . . . . . 13-25
13.2.19 System checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-26
13.2.20 Alarm tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-26
13.2.21 Power failure test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-27
13.2.22 Electrical safety checks . . . . . . . . . . . . . . . . . . . . . . . 13-28
13.2.23 Final machine checks . . . . . . . . . . . . . . . . . . . . . . . . .13-28
Carestation 620/650/650c (A1/A2)
xiv 2076163-001 03 17
Index
Table of Contents
03 17 2076163-001 xv
Carestation 620/650/650c (A1/A2)
xvi 2076163-001 03 17
1 Introduction
Introduction
In this section
1.1 General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.1.1 Main Machine SN Information. . . . . . . . . . . . . . . . . . . . . . 1-3
1.1.2 Main Machine UDI Information. . . . . . . . . . . . . . . . . . . . . 1-3
1.1.3 Technical competence. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.1.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 1-4
1.1.5 Important. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.2 What this manual includes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
1.2.1 Other equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
1.3 User's Reference Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1.4 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1.5 System overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11
1.6 Feature overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
1.7 Display control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
1.7.1 Touch points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18
1.8 Anesthesia system display. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
1.8.1 Digit field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
1.8.2 Waveform fields. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
1.8.3 Split screen field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
1.9 Display navigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-24
1.9.1 Using menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
03 17 2076163-001 1-1
1.9.2 Using the ComWheel. . . . . . . . . . . . . . . . . . . . . . . . . . . .1-25
1.9.3 Using quick keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
1.10 System information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-26
1.10.1 System classification. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
1.10.2 Device standards IEC 60601-1:2005. . . . . . . . . . . . . . 1-26
1.10.3 Device standards IEC 60601-1:1988. . . . . . . . . . . . . . 1-26
1.10.4 Environmental requirements. . . . . . . . . . . . . . . . . . . . . 1-27
1.10.5 Physical specifications. . . . . . . . . . . . . . . . . . . . . . . . . .1-27
1.10.6 Communication with external devices. . . . . . . . . . . . . .1-30
1.11 Symbols used in the manual or on the equipment. . . . . . . . .1-32
1.11.1 Symbols used on the equipment. . . . . . . . . . . . . . . . . . 1-32
1.11.2 Symbols used on the user interface. . . . . . . . . . . . . . . 1-35
1.12 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36
Carestation 620/650/650c (A1/A2)
1-2 2076163-001 03 17
1.1 General information
1.1.1 Main Machine SN Information
The Carestation 620/650/650c (A1/A2) series products have unit serial
numbers with coded logic, which indicates a product group code, the year the
machine was manufactured, the week the machine was manufactured, the
sequential unit number for identification, the manufacture site and the
product type.
XXX YY FW XXXX S M
The XXX represents the product code; SM6 = Carestation 620, SM7 = Carestation
650, SM8 = Carestation 650c.
YY represents a number indicating the year the product was manufactured; 14 =
2014, 15 = 2015, and so on.
FW represents the week the product was manufactured; 01 = FW01, 02 = FW02,
and so on.
XXXX represents the serial number of the machine.
The S site information (W or M) represents the location the machine was
manufactured. W = Wuxi, M = Madison
The M machine information (P or A) represents the production type. P is used for the
prototype machines, A is for the mass production machines.
1.1.2 Main Machine UDI Information
Each machine has a UDI (Unique Device Identifier) label. The UDI label is
located on the left frame, together with the machine SN and REF labels.
 
AC
.2
4.
42
3
 
The UDI label of the Carestation 650/650c/620 (A1/A2) machines includes
the GTIN (Global Trade Item Number) code, the SN (Serial Number) code
and the manufacturing date code.
1 Introduction
03 17 2076163-001 1-3
1 2 3
The digits following (01) represent the GTIN code (1) which includes 14
digits:
• the first digit represents the packing code
• digits 2 and 3 represent the country code
• digits 4 through 8 represents the manufacturer ID
• digits 9 through 13 represents the manufacturing identifier code
• digit 14 is the check code
The digits following (21) represent the Serial Number (2). See "1.1.1 Main
Machine SN Information" for more details on the SN code information.
The digits following (11) represent the manufacturing date (3) with a format of
YYMMDD.
1.1.3 Technical competence
The procedures described in this Technical Reference Manual should be
performed by trained and authorized personnel only. Maintenance should
only be undertaken by competent individuals who have a general knowledge
of and experience with devices of this nature. No repairs should ever be
undertaken or attempted by anyone not having such qualifications.
Replace damaged parts with components manufactured or sold by GE
Healthcare. Then test the unit to ascertain that it complies with the
manufacturer’s published specifications.
Read completely through each step in every procedure before starting the
procedure; any exceptions may result in a failure to properly and safely
complete the attempted procedure.
1.1.4 Trademarks
Carestation, CARESCAPE, D-fend, D-lite, Medisorb, PSVPro, Tec, and
Selectatec are trademarks of General Electric Company or one of its
subsidiaries.
All other brand names or product names used in this manual are trademarks
or registered trademarks of their respective holders.
1.1.5 Important
The information contained in this Technical Reference Manual pertains only
to those models of products which are marketed by GE Healthcare as of the
Carestation 620/650/650c (A1/A2)
1-4 2076163-001 03 17
effective date of this manual or the latest revision thereof. This Technical
Reference Manual was prepared for exclusive use by GE Healthcare service
personnel in light of their training and experience as well as the availability to
them of parts, proper tools and test equipment. Consequently, GE Healthcare
provides this Technical Reference Manual to its customers purely as a
business convenience and for the customer's general information only
without warranty of the results with respect to any application of such
information. Furthermore, because of the wide variety of circumstances
under which maintenance and repair activities may be performed and the
unique nature of each individual's own experience, capacity, and
qualifications, the fact that customer has received such information from GE
Healthcare does not imply in any way that GE Healthcare deems said
individual to be qualified to perform any such maintenance or repair service.
Moreover, it should not be assumed that every acceptable test and safety
procedure or method, precaution, tool, equipment or device is referred to
within, or that abnormal or unusual circumstances, may not warrant or
suggest different or additional procedures or requirements.
This manual is subject to periodic review, update and revision. Customers
are cautioned to obtain and consult the latest revision before undertaking any
service of the equipment.
This manual provides essential information for service, for more details on
safe operation, transport and storage, please refer to the User’s Reference
Manual of this device.
Servicing of this product in accordance with this Technical Reference Manual
should never be undertaken in the absence of proper tools, test equipment
and the most recent revision to this service manual which is clearly and
thoroughly understood.
Servicing and/or Repair procedures for this Product must be performed by
personnel trained and authorized by Datex-Ohmeda.
Do not modify this equipment without authorization from the
manufacturer. Unauthorized modifications could result in
damage to the equipment and/or cause patient injury.
Changes or modification to this equipment not expressly
approved by the manufacturer could causeEMC issues with this
or other equipment. Contact the manufacturer for assistance.
This device is designed and tested to comply with applicable
regulations regarding EMC as follows:
• Use of portable phones or other radio frequency (RF)
emitting equipment (that exceed electromagnetic
interference levels specified in IEC 60601-1-2) near the
system may cause unexpected or adverse operation.
Monitor operation when RF emitters are in the vicinity.
• Use of other electrical equipment adjacent to or stacked with
this system may cause interference. Verify normal operation
of equipment in the system before use on patients.
Note
Note
Note
WARNING
1 Introduction
03 17 2076163-001 1-5
If this equipment is modified, appropriate inspection and testing
must be conducted to ensure continued safe use of the
equipment.
• Use this equipment only with the specified nonflammable
anesthetic agents.
• Do not use lubricants that contain oil or grease. They may
burn or explode in high O2 concentrations.
• Do not tilt the vaporizer. If the vaporizer has been tilted or
inverted, incorrect agent output may occur.
• National Institute for Occupational Safety and Health
(NIOSH) or equivalent recommendations for air exchange
should be considered in any use environment.
WARNING
Carestation 620/650/650c (A1/A2)
1-6 2076163-001 03 17
1.2 What this manual includes
This manual covers the service information for the Carestation 620/650/650c
(A1/A2) series anesthesia machines. This manual details the following main
components:
• Display Unit
• Integral electronics
• Gas delivery components
• Breathing system components
• Frame components
• Optional auxiliary O2 flowmeter
• Optional ACGO
• Optional suction regulator
1.2.1 Other equipment
Other equipment may be attached to the system on a display mount, the top
shelf, or on the side rails. Consult separate documentation relative to these
items for details.
1 Introduction
03 17 2076163-001 1-7
1.3 User's Reference Manual
Some sections of this manual refer you to the User’s Reference Manual for
the Carestation 620/650/650c (A1/A2) series system. To expedite repairs,
you must have and be familiar with the User’s Reference Manual.
Refer to the Carestation 620/650/650c (A1/A2) User’s Reference Manual for
further information about the operating principles and specifications of the
system.
Carestation 620/650/650c (A1/A2)
1-8 2076163-001 03 17
1.4 Overview
The Carestation 620/650/650c (A1/A2) series anesthesia system integrates
gas delivery, ventilation, and optional respiratory gas monitoring on a 15-inch
color touchscreen interface. It combines advanced anesthesia delivery,
patient monitoring, and care information management in a contemporary,
compact design.The system uses a microprocessor-controlled ventilator
offering Volume Controlled Ventilation with tidal volume compensation, also
supports Pressure Control Ventilation (PCV), SIMV VCV, PSVPro (Pressure
Supported Ventilation), SIMV PCV, PCV-VG, CPAP+PCV, SIMV PCV-VG,
and VCV Cardiac Bypass as optional features.
This system supports the integrated function of below airway modules:
• Airway Gas Option: N-CAiO (without Spirometry connector)
• CARESCAPE series: E-sCAiO and E-sCAiOV.
The system features gas mixing for up to three gases.
Other optional, integrated features include auxiliary O2 delivery, single action
brake locking system, power outlets, bag arm, backup cylinders, drawers,
cable management, caster guard, dovetail hooks, Auxiliary Common Gas
Outlet (ACGO), and suction control.
Configurations available for this product depend on local market and
standards requirements. Illustrations in this manual may not represent all
configurations of the product.
The Carestation 620/650/650c (A1/A2) system is not suitable for
use in an MRI environment.
 
Note
WARNING
1 Introduction
03 17 2076163-001 1-9
AC
.2
4.
00
0
 
Carestation 620/650/650c (A1/A2)
1-10 2076163-001 03 17
1.5 System overview
AC
.2
4.
01
2
1
2
3
4
6
7
20
19
16
13
12
10
9
15
11
14
5
8
18
17
21
22
1. Digital fresh gas display 12. Bag hose connection
2. Fresh gas control knob 13. O2 flush
3. Total fresh gas flow meter 14. Breathing system door
4. Vaporizer 15. Leak test plug
5. Suction regulator and control 16. Bag/Vent switch
6. On/Standby switch 17. Adjustable pressure-limiting (APL) valve
7. Flip-up shelf 18. Bellows assembly
8. Drawer lock 19. Auxiliary Common Gas Outlet (ACGO) switch and port
9. Caster brake 20. Auxiliary O2 outlet
10. Central brake 21. Auxiliary O2 flowmeter
11. Drawers 22. Anesthesia display
Figure 1-1 • Front View
1 Introduction
03 17 2076163-001 1-11
AC
.2
4.
01
3
1
4
2
3
13
11
7
6
9
12
8
5
14
10
1. Display arm 8. Equipotential stud
2. Cable hook 9. Mains inlet
3. Third cylinder mount 10. Mains power fuses (inside)
4. Cylinder guard 11. Right dovetail
5. Caster guard 12. Pipeline connections
6. Electrical outlets 13. Side rail
7. Outlet circuit breakers 14. Top shelf monitor mount
Figure 1-2 • Rear view (Left)
Carestation 620/650/650c (A1/A2)
1-12 2076163-001 03 17
AC
.2
4.
01
4
1
6
10
8
7
9
2
3
4
5
11
12
1. Bag support arm 7. Left dovetail
2. Breathing system guard 8. Anesthesia Gas Scavenging System (AGSS) port
3. Inspiratory port 9. Sample gas return port
4. Expiratory port 10. Airway module
5. Absorber canister 11. Suction trap
6. Absorber canister lifter handle 12. Suction fitting
Figure 1-3 • Rear view (Right)
1 Introduction
03 17 2076163-001 1-13
AC
.2
4.
29
2
2
1
1. Casters
2. Pendant mount interface
Figure 1-4 • Front and rear view of pendant system
AC
.2
4.
29
3
1
2
1. Wall-mounting rack
2. Wall-mounting interface
Figure 1-5 • Front and rear view of wall mount system
See "1.6 Feature overview" (15) for more information on product specific
offerings.
Note
Carestation 620/650/650c (A1/A2)
1-14 2076163-001 03 17
1.6 Feature overview
.
Hardware feature
Frame Trolley Trolley Pendant or Wall mount
Anesthesia display arm 1 - pivot, no tilt 2 - pivots, with tilt 2 - pivots, with tilt
Flip shelf Optional Optional Pendant: Optional
Wall mount: Not available
Front handle Not available Included Pendant: Included
Wall mount: Not available
Drawers Optional (0, 3) Included (3) Included (2)
Central brake Not available Included Not available
Wheels ~5 in / 125 mm ~5 in / 125 mm Pendant: ~3 in / 80 mm
Wall mount: Not available
Caster guards Not available Included Not available
Worksurface metallic insert Not available Included Included
Bag arm Optional Optional Optional
Top shelf color White Black Black
.
Integrated monitoring
Integrated Airway module slot Optional Optional Optional
O2 cell, breathing system Optional Optional Optional
.
Patient monitor mounting
Top shelf post mount Optional Optional Optional
Vertical mount, configured monitor
(above anesthesia display)
Not available Optional Optional
CARESCAPE B850 mounting
Display
(above anesthesia display)
Not available Optional Optional
F5 Frame
(top shelf post mount)
Not available Optional Optional
CPU
(lower right)
Not available Optional Not available
(mount separately to
Medi-rail or Wall)
Long cable management arm Optional Optional Optional
1 Introduction
03 17 2076163-001 1-15
Patient monitor mounting
Short cable management arm Not available Optional Optional
.
Cylinders
In-board, cylinder yokes Optional (0 - 2) Optional (0 - 2) Not available
In-board, cylinder yoke cover Optional Optional Not available
Out-board, 3rd cylinder Optional Optional Not available
Large cylinders (O2/N2O) Optional (0 - 2) Optional (0 - 2) Not available
.
AC outlets
3 AC outlets Optional Optional Not available
AC isolation transformer Optional Optional Not available
.
Pneumatic Options
Drive gas Air or O2 Air or O2 Air or O2
Fresh gas options (O2, Air, N2O) 2 or 3 2 or 3 2 or 3
Pipeline inlets 2 or 3 (2nd O2 optional) 2 or 3 (2nd O2 optional) 2 or 3 (2nd O2 optional)
User guidance lighting Included Included Included
Freshgas flow, LED display
(above control knobs)
Not available Included Included
Aux Common Gas Outlet (ACGO) Optional Optional Optional
Integrated Aux O2
(independent flow meter)
Optional Optional Optional
Integrated Aux O2+Air
(system fresh gas controls)
Not available Optional Optional
Integrated suction Optional Optional Optional
.
Software features
VCV Included Included Included
Additional vent modes Some optional All optional All optional
Spirometry Optional Included Included
VCV cardiac bypass Optional Optional Optional
Auto alarm limits Not available Included Included
EcoFlow Not available Optional Optional
Pause gas Not available Optional Optional
Cycling Not available Optional Optional
Carestation 620/650/650c (A1/A2)
1-16 2076163-001 03 17
Software features
Vital capacity Not available Optional Optional
1 Introduction
03 17 2076163-001 1-17
1.7 Display control
The system uses touchscreen technology, hard keys, and a ComWheel to
access system functions, menus, and settings.
Liquids on the display may degrade the performance of the
touchscreen. If liquids come in contact with the display, lock the
touchscreen and clean the display. Unlock the touchscreen once
the display has been cleaned to resume use of the touchscreen.
65 4 3
AC
.2
4.
05
2
2 1
1. ComWheel Selects a menu item or confirms a setting. Turn clockwise or counterclockwise to scroll
through menu items or change settings.
2. Home key Removes all menus from the screen.
3. Screen Lock/Unlock
key
Locks the touchscreen. Toggles between lock and unlock functions.
4. Start/End Case key Initiates Start or End Case function.
5. Touchscreen Activates functions when touch areas on the screen are selected.
6. Audio Pause key Stops audio for 120 seconds for any active, eligible high and medium priority alarms.
Prevents audio (audio off) for 90 seconds when no medium or high priority alarms are
active. Allows the operator to acknowledge any non-active medium or high priority latched
alarms.
Figure 1-6 • Display controls
1.7.1 Touch points
The touchscreen has numerous touch point areas that make accessing
menus and settings quick and easy.
WARNING
Carestation 620/650/650c (A1/A2)
1-18 2076163-001 03 17
• The function keys on the right side of the screen provide direct access to
commonly used functions.
• The ventilation quick keys enable setup of ventilation modes.
• The gas control quick keys provide a method to set up the gas used for
a case.
Touch only one touch point at a time to ensure the correct selection is made.
Do not apply excessive force to the touchscreen as damage
may occur.
AC
.2
4.
05
0
21
3
4
5
6
1. Wave fields 4. Digit fields
2. Measured values 5. Ventilator quick keys
3. Function keys 6. Split screen values
Figure 1-7 • Normal/Full screen view with shaded touch point areas
Measured value touch points
Touching measured values provides access to the Alarm Setup menu and
alarm limits.
1. Touch the measured value to access the Alarm Setup menu.
2. The Alarm Setup menu displays.
3. Select the alarm limit and set it to the correct value. Touch the value on
the touchscreen or push the ComWheel to confirm the desired setting.
CAUTION
1 Introduction
03 17 2076163-001 1-19
4. Push the Home key, touch the waveform area of the display, or select
Close to close the menu.
Active alarm touch points
When an alarm sounds the alarm message is displayed at the top of the
screen and, if applicable, the alarming numeric field and digit field flashes.
The Alarm messages at the top of the screen are message alerts only and
not active touch points.
1. Touch the flashing numeric field to access the Alarm Setup menu and
alarm limits for the active alarm.
2. The Alarm Setup menu displays with the active alarm limit highlighted.
For example: If the ‘Ppeak high’ alarm activates, the high alarm limit
setting for Ppeak displays with the highlight.
3. Select the active alarm limit and change it to the desired setting.
Carestation 620/650/650c (A1/A2)
1-20 2076163-001 03 17
1.8 Anesthesia system display
3.1 3.9 VCV 500 12 1:2 Off Off 40
12 16
45
0.15.1
6.3
14
521
3
6
03:18
40
1200
0.5
1
5
10
15
5
0
60
-60
10
0
20
-20 100
0
20
40
60
80
3.0
10.0
Audio Pause
Alarm Setup
System
Setup
Next Page
Trends
Spirometry
Procedures
End Case
PmaxPEEPTpauseRR I:ETVMode
FGO2 %
Ventilator Off: Volume Control
Flow
Paw
CO2
Gases %
CO2 %
Flow l/min
Paw cmH2O
Resp
00:00:00
Start
8.0
21
2.0
40
Total Flow
8.3
55
Auto Limits
0
0
1:52
1.3
12
2
7
9
11
5 63
8
10
AC
.2
4.
00
8
0.0 0.0
0.0
Agent %
11
1. Audio pause symbol and
countdown clock
Indicates when alarm audio is paused and the countdown clock until audio is
on.
2. Alarm message fields Displays the active alarms.
3. Waveform fields Displays the waveforms of measured values. For example: Paw, Flow, and
CO2.
4. General message fields or lock
touchscreen indicator
Displays general messages and the touchscreen lock indicator.
5. Measured values fields Displays the measured values. For example: Paw, Flow, and CO2.
6. Clock Displays the current time.
7. Function keys Functions available are: Audio Pause, Alarm Setup, Auto Limits, System
Setup, Next Page, Trends, Spirometry, Procedures, Timer, Start, and End
Case.
8. Digit fields Contains information for Loops, Resp, Agent, Gas Supplies, Flow, and Gases.
9. Ventilation mode Displays the selected ventilation mode. For example: Ventilator Off and Volume
Control.
1 Introduction
03 17 2076163-001 1-21
10. Ventilator quick keys Displays Mode, associated ventilation parameters, and More Settings. For
example: Mode, TV, RR, I:E, Tpause PEEP, and Pmax.
11. Total Flow Contains information for Total Flow and FGO2 %.
12. Split screen Contains airway pressure, gas flow values, compliance, trends, spirometry and
optional ecoFLOW information.
Figure 1-8 • Typical Normal/Full view
1.8.1 Digit field
The digit field can be set to show specific information such as gas supply,
flow, or agent. If the digit field is set to show agent and no airway module is
inserted, the area is blank.
Paw, O2, and either TVexp or CO2 must show on the display during a case.
If any of these parameters are not selected to show on the display, the digit
field information is replaced with the missing parameter.
See the User’s Reference Manual for more information.
1.8.2 Waveform fields
Up to three waveforms can be shown on the normal screen view. Each
waveform can be set to show specific Paw, agent, flow, or CO2 data. The
corresponding numeric information shows in the measured values field to the
right of the waveform. If the waveform is set to show the agent and no airway
module is inserted, the waveform and numeric area is blank.
When one waveform is turned off, that waveform and the corresponding
numerics information are removed from the normal screen view. The
remaining waveforms and numerics increase in size to fill the waveform area.
When two waveforms are turned off, those waveforms and the corresponding
numerics information are removed from the normal screen view. The
remaining waveform is centered in the waveform area.
When in a case, touch the waveform field area to close the menu.
See the User’s Reference Manual for more information.
1.8.3 Split screen field
The split screen field can be set to show gas and agent delivery, trends,
spirometry loops, Paw gauge, airway compliance, and optional ecoFLOW
information. If None is selected, the split screen area will be blank.
The split screen consists of an upper and lower portion. The upper portion
typically shows graphical information for the selected parameter and the
lower portion typically shows a representation of measured gas flow.
Carestation 620/650/650c (A1/A2)
1-22 2076163-001 03 17
See the User’s Reference Manual for more information.
1 Introduction
03 17 2076163-001 1-23
1.9 Display navigation
Use the touchscreen and ComWheel to navigate the display.
AC
.2
4.
00
9
32
1
1. Menu Displays the title of the open menu. For example: Start Case.
2. Instructions or help information This shows any additional instructions or help messages.
3. Menu items Shows Case Defaults, Volume Apnea Alarm, CO2 Alarms, Age, Ideal
Weight, and Start Case Now.
Figure 1-9 • Menu view and menu example
1.9.1 Using menus
Use the function keys to access the corresponding menus. When a menu is
selected, the menu field overlays the normal view and the waveform fields
start at the right edge of the menu.
1. Select the menu key to access the corresponding menu.
Carestation 620/650/650c (A1/A2)
1-24 2076163-001 03 17
2. Select a menu item to choose the item, or turn the ComWheel left or
right to highlight a menu item and then push to confirm.
3. If the menu item selected is an adjustment, turn the ComWheel left or
right to make the setting and then push to confirm.
If the menu item has a drop-down list, select the desired value from the
list by touching the item.
4. Select Close, touch the waveform area, or push the Home key to exit
the menu.
1.9.2 Using the ComWheel
Use the ComWheel to scroll through the quick key settings and function
keys, make selections, change settings, and confirm settings.
• Push the ComWheel to make a selection.
• Turn the ComWheel to the right.
For menu items, the highlight moves down.
For quick keys, the highlight moves to the next key on the right.
For settings, the value changes to the next available setting.
For pull-down selections, the highlight moves to the next available
selection.
• Turn the ComWheel to the left.
For menu items, the highlight moves up.
For quick keys, the highlight moves to the next key on the left.
For settings, the value changes to the previous available setting.
For pull-down selections, the highlight moves to the previous available
selection.
• Push the ComWheel to confirm a setting.
1.9.3 Using quick keys
The main ventilator settings for each ventilation mode can be changed using
the quick keys.
1. Select a quick key to open the menu or select a parameter.
2. If Mode or More Settings is selected, a menu displays. Select the
desired value on the menu by touching the value.
If any other quick key is selected, the value displays with a highlight.
Turn the ComWheel left or right to set the desired value.
3. Push the ComWheel or select the quick key to confirm the change.
1 Introduction
03 17 2076163-001 1-25
1.10 System information
1.10.1 System classification
This system is classified as follows:
• Class I Equipment.
• Type B Equipment.
• Type BF Equipment (airway modules).
• Ordinary Equipment.
• Not for use with flammable anesthetics.
• Continuous operation.
1.10.2 Device standards IEC 60601-1:2005
Devices used with this anesthesia system shall comply with the following
standards where applicable:
• Breathing system and breathing system components ISO 80601-2-13.
• Anesthetic gas scavenging systems ISO 80601-2-13
• Anesthetic vapor delivery devices ISO 80601-2-13.
• Anesthetic agent monitors ISO 80601-2-55.
• Oxygen monitors ISO 80601-2-55.
• Carbon dioxide monitors ISO 80601-2-55.
• Exhaled volume monitors ISO 80601-2-13.
1.10.3 Device standards IEC 60601-1:1988
Devices used with this anesthesia system shall comply with the following
standards where applicable:
• Breathing system and breathing system components ISO 8835-2.
• Anesthetic gas scavenging systems ISO 8835-3
• Anesthetic vapor delivery devices ISO 8835-4.
• Anesthetic agent monitors ISO 21647.
• Oxygen monitors ISO 21647.
• Carbon dioxide monitors ISO 21647.
• Exhaled volume monitors IEC 60601-2-13.
Carestation 620/650/650c (A1/A2)
1-26 2076163-001 03 17
1.10.4 Environmental requirements
.
Operation Storage and Transport
Temperature 10 to 40°C
Oxygen cell 10 to 40°C
-25 to 60°C
Oxygen cell storage is -15 to 50°C, 10 to 95% RH,
500 to 800 mmHg
LCD display storage is -20 to 60°C
Humidity 15 to 95% RH, non-condensing 15 to 95%, non-condensing
Altitude 500 to 800 mmHg
(3565 to -440 meters)
425 to 800 mmHg
(4880 to -440 meters)
1.10.5 Physical specifications
All specifications are approximate values and can change without notice.
Do not subject the system to excessive shock and vibration.
Do not place excessive weight on flat surfaces or drawers.
Maintain system balance. When using rails or dovetails,
distribute equipment on each side of the system. Uneven
system balance could cause the system to tip.
.
Carestation 620
A1/A2
Carestation 650
A1/A2
Carestation 650c
A1/A2
Pendant
Carestation 650c
A1/A2
Wall Mount
(without bracket)
System height 135 cm 135 cm 101.4 cm 100.2 cm
System width 82.5 cm 82.5 cm 80 cm 74 cm
System depth 69.1 cm 75 cm 68.5 cm 62.8 cm
Nominally configured
mass
145 kg 145 kg 85 kg 85 kg
Maximum configured mass 320 kg 320 kg 180 kg 160 kg
Tec™ 6 Plus mass 9 kg 9 kg 9 kg 9 kg
Tec 7 mass 7.5 kg 7.5 kg 7.5 kg 7.5 kg
Top of machine weight
limit
25 kg 25 kg 25 kg 25 kg
Machine drawer weight
limit
9 kg / drawer 9 kg / drawer 9 kg / drawer 9 kg / drawer
Casters 12.5 cm 12.5 cm 8 cm None
CAUTION
•
WARNING
1 Introduction
03 17 2076163-001 1-27
Carestation 620
A1/A2
Carestation 650
A1/A2
Carestation 650c
A1/A2
Pendant
Carestation 650c
A1/A2
Wall Mount
(without bracket)
LCD and touchscreen
display
304 x 225 mm (38 cm diagonal)
Nominally configPhured mass for trolley machine includes trolley, breathing
system, three pipeline inlets, two PIN index yokes, passive AGSS, AC outlet
with transformer, drawers, two pivot display arm, top shelf patient monitoring
mount, and central brake. Does not include drawer contents or externally
mounted accessories.
Nominally configured mass for pendant and wall mount machine includes
breathing system, three pipeline inlets, passive AGSS, drawers, two pivot
display arm, and top shelf patient monitoring mount. Does not include drawer
contents and externally mounted accessories.
Maximum configured mass includes nominal configuration, external cylinders
and maximum loads on all mounting and storage locations.
System loading
Left dovetail loading
The dovetail on the left side of the machine is separated into upper and lower
load ratings. Maximum allowable upper dovetail loading is 4.5 kg and 3.7
Nm. Maximum allowable lower dovetail loading is 6 kg and 10 Nm.
See "1.5 System overview" (11) for the location of the left dovetail.
0
5 AC
.2
4.
28
9
1
4
5
10 15 353025
2
3
20
Figure 1-10 • The upper dovetail load in kg (vertical) versus load distance
from the upper dovetail in cm (horizontal).
Note
Note
Note
Carestation 620/650/650c (A1/A2)
1-28 2076163-001 03 17
0
0 AC
.2
4.
17
3
2
1
5
6
7
10 20 30 40 50
4
3
Figure 1-11 • The lower dovetail load in kg (vertical) versus load distance
from the lower dovetail in cm (horizontal).
Right dovetail loading
The dovetail on the right side of the machine is separated into upper and
lower load ratings. Maximum allowable upper dovetail loading is 12.1 kg and
54 Nm. Maximum allowable lower dovetail loading is 22.7 kg and 16.2 Nm.
See "1.5 System overview" (11) for the location of the right dovetail.
5
40 AC
.2
4.
29
0
7
12
13
45 50 706560
9
11
55
8
10
6
75
Figure 1-12 • The upper dovetail load in kg (vertical) versus load distance
from the upper dovetail in cm (horizontal).
1 Introduction
03 17 2076163-001 1-29
0
0 AC
.2
2.
03
9
5
10
15
20
25
10 20 30 40 50 60 70 80
Figure 1-13 • The lower dovetail load in kg (vertical) versus load distance
from the lower dovetail in cm (horizontal).
Top shelf rail loading
Maximum allowable top shelf rail loading is 4.5 kg and 3.7 Nm.
0
1
7 9
2
3
4
5
11 13 15 17 19 AC
.2
2.
02
1
Figure 1-14 • Top shelf rail load in kg (vertical) versus load distance from the
top shelf rail in cm (horizontal).
1.10.6 Communication with external devices
The RS-232 connection on the display unit may be used to communicate to
an external device. In order to share information from a Carestation
620/650/650c (A1/A2) machine, the receivingsystem must be compatible
with Datex-Ohmeda Com 1.0 Serial Protocol or Ohmeda Com 1.2 Serial
Protocol.
Failure to meet the requirements of the Datex-Ohmeda Com 1.0
or 1.2 Serial Protocol will not allow the transfer of data from the
CAUTION
Carestation 620/650/650c (A1/A2)
1-30 2076163-001 03 17
Carestation 620/650/650c (A1/A2) system to the receiving
system.
Connection of the Carestation 620/650/650c (A1/A2) system to
other equipment may result in previously unidentified risks to
patients, operators, or third parties. The responsible
organization should identify, analyze, evaluate and control these
risks. Subsequent changes to the network/data coupling may
introduce new risks and require additional analysis. Possible
subsequent changes include:
• changes in data communication configuration.
• connection of additional items to the data communication.
• disconnecting items from the data communication.
• update of equipment connected to the data communication.
CAUTION
1 Introduction
03 17 2076163-001 1-31
1.11 Symbols used in the manual or on the equipment
Symbols replace words on the equipment, on the display, or in product
manuals.
Warnings and Cautions tell you about dangerous conditions that can occur if
you do not follow all instructions in this manual.
Warnings tell about a condition that can cause injury to the operator or the
patient.
Cautions tell about a condition that can cause damage to the equipment.
Read and follow all warnings and cautions.
1.11.1 Symbols used on the equipment
.
O2 Flush button O2 concentration
Air Air
APL settings are approximate Anesthetic Gas Scavenging System
Maximum Vacuum
Serial number Stock number
Exhaust Bellows volumes are approximate
Plus, positive polarity Minus, negative polarity
Maximum mass of configured mobile
equipment
Caution: federal law prohibits
dispensing without prescription.
Autoclavable Selectatec Series Vaporizers Tec 6
Plus or greater
On (power) Off (power)
Standby Non-ionizing electromagnetic radiation
Type BF equipment Type B equipment
Dangerous voltage Frame or chassis ground
Protective earth ground Earth ground
Direct current Alternating current
Carestation 620/650/650c (A1/A2)
1-32 2076163-001 03 17
Caution Refer to instruction manual or booklet
(blue background)
Operating instructions General warning (yellow background)
Electrical input/output Sample gas inlet to scavenging
Pneumatic inlet Pneumatic outlet
Equipotential Lamp, lighting, illumination
Control with variable function Not autoclavable
Suction bottle outlet Off (for a part of the machine)
Bag position/manual ventilation Mechanical ventilation
Inspiratory flow Expiratory flow
Lock Unlock
Read to center of float CO2 bypass
Handle lifter for absorber canister Total flow
ACGO active Auxiliary Common Gas Outlet
Auxiliiary O2 Auxiliary O2 and Air
Start/end case Home screen
Systems with this mark agree with the
European Council Directive (93/42/
EEC) for Medical Devices when they
are used as specified in their User’s
Reference manuals. The xxxx is the
certification number of the Notified
Body used by Datex-Ohmeda’s Quality
Systems.
Authorized representative in the
European Community
Date of manufacture Manufacturer
1 Introduction
03 17 2076163-001 1-33
Indicates that the waste of electrical
and electronic equipment must not be
disposed as unsorted municipal waste
and must be collected separately.
Please contact an authorized
representative of the manufacturer for
information concerning the
decommissioning of equipment.
GOST R Russian certification
Breathing system guard When moving or transporting
anesthesia machine, place the display
arm and shelf in the transport position
as shown.
Eurasian Conformity Single use device
This way up Stacking limit by mass
Keep dry Do not stack
Temperature limitation Fragile, handle with care
Do not turn over Do not clamp
Protect from heat and radioactive
sources
Recyclable material
Humidity limitation Electrical test certification
USB port Network
Not a USB port VGA connection
Serial connection Do not use hook
Atmospheric limitation MR unsafe
MRI not compatible
(red circle and slash)
Ukraine National Conformity Unique Device Identifier
Carestation 620/650/650c (A1/A2)
1-34 2076163-001 03 17
Electrostatic sensitive device.
Connections should not be made to
this device unless ESD precautionary
procedures are followed.
Nominal mass weight
Fuse Need tools and refer to installation
instruction
Harmful RoHS Symbol (China)
1.11.2 Symbols used on the user interface
.
Lock
Indicates the touchscreen is locked.
Lock/unlock button
Button label to lock or unlock the
touchscreen.
Audio Pause Submenu
No battery/battery failure Battery in use. Bar indicates amount of
battery power remaining.
Airway module indicator Manual ventilation
Drop-down menu Lung procedure performed (trends)
Pediatric Adult
Timer Alarm off
Pipeline Cylinder
Test indicator: red for failure, yellow for
conditional outcome, and green for
pass, gray for incomplete.
Alarm low and alarm high limit indicator
1 Introduction
03 17 2076163-001 1-35
1.12 Abbreviations
Abbreviation Definition
A
AA Anesthetic agent
ACB Anesthesia Computer Board
ACGO Auxiliary Common Gas Outlet
AGSS Anesthesia Gas Scavenging System
APL Adjustable pressure-limiting
APN Apnea
ATPD Ambient temperature and pressure, dry humidity conditions
Aux Gas Auxiliary Gas
Aux O2+Air Auxiliary O2+Air
B
BTPS Body temperature, ambient pressure, saturated humidity
conditions
C
CO Carbon monoxide
CO2 Carbon dioxide
Compl Compliance
CPAP + PSV Continuous positive airway pressure + pressure support
ventilation
D
DCB Dispaly Control Board
DU Display Unit
E
EMC Electromagnetic Compatibility
ESD Electrostatic sensitive device
ET End-tidal concentration
EtCO2 End-tidal carbon dioxide
EtO2 End-tidal oxygen
Exp Expiratory
F
FGO2 Fresh Gas Oxygen
FI Fraction of inspired gas
FIB Frame Interface Board
FiCO2 Fraction of inspired carbon dioxide
FiO2 Fraction of inspired oxygen
Flow-Vol Flow-volume loop
G
GIV Gas Inlet Valve
Carestation 620/650/650c (A1/A2)
1-36 2076163-001 03 17
Abbreviation Definition
I
I:E Inspiratory-expiratory ratio
Insp Inspiratory
Insp Pause Inspiratory pause time
K
kg Kilogram
M
MAC Minimum alveolar concentration
MCU Micro Control Unit
MV Minute volume
MVexp Expired minute volume
MVinsp Inspired minute volume
N
N2 Nitrogen
N2O Nitrous oxide
O
O2 Oxygen
P
P-ACGO Pressure - Auxiliary common gas outlet
Paw Airway pressure
PCV Pressure control ventilation
PCV-VG Pressure control ventilation - volume guaranteed
Pedi Pediatric
PEEP Positive end expiratory pressure
Paw-Flow Pressure-flow loop
Pinsp Inspiratory pressure
Pmax Maximum pressure
PMB Power Management Board
Pmean Mean pressure
Ppeak Peak pressure
Pplat Plateau pressure
Psupport Support pressure
PSV Pressure support ventilation
PSVPro Pressure support ventilation with apnea backup
Paw-Vol Pressure-volume loop
R
Raw Airway resistance
RF Radio frequency
RR Respiratory rate
S
SIB Sensor Interface Board
1 Introduction
03 17 2076163-001 1-37
Abbreviation Definition
SIMV PCV Synchronized intermittent mandatory ventilation - pressure
control ventilation
SIMV PCV-VG Synchronized intermittent mandatory ventilation - pressure
control ventilation - volume guaranteed
SIMV VCV Synchronized intermittent mandatory ventilation - volume control
ventilation
T
Texp Expiratory time
Tinsp Inspiratory time
Tpause Time where breath is paused with no flow
TV Tidal volume
TVexp Expired tidal volume
TVinsp Inspired tidal volume
V
VCV Volume control ventilation
VDC Volts Direct Current
Vol Volume
Carestation 620/650/650c (A1/A2)
1-38 2076163-001 03 17
2 Theory of Operation
Theory of Operation
In this section
2.1 Electrical system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.2 Power subsystem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.2.1 AC-DC power supply. . . . . . . . . . . . . . . . . . . . . . . . . . .. . 2-5
2.2.2 Power Management Board. . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.2.3 Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.3 System communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.3.1 Software Power On Self Test (POST). . . . . . . . . . . . . . . . 2-9
2.4 Display Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.4.1 Display Unit connections. . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.5 Anesthesia Computer Board. . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2.6 Frame Interface Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
2.7 Lights and digital LED flow display boards. . . . . . . . . . . . . . . 2-19
2.7.1 Digital LED flow display board. . . . . . . . . . . . . . . . . . . . .2-19
2.7.2 Top task light boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
2.7.3 Bottom task light board. . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2.7.4 ACGO LED light and microswitch. . . . . . . . . . . . . . . . . . 2-20
2.7.5 Aux O2 + Air LED light and microswitch. . . . . . . . . . . . . 2-21
2.8 Sensor Interface Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-22
2.9 Mixer solenoid valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
2.10 Gas flow through the anesthesia machine. . . . . . . . . . . . . . .2-25
03 17 2076163-001 2-1
2.10.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
2.10.2 System pneumatic circuits. . . . . . . . . . . . . . . . . . . . . . .2-27
2.10.3 Suction regulators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
2.10.4 Flow control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
2.11 Flow through the breathing system. . . . . . . . . . . . . . . . . . . . 2-32
2.11.1 Overview of flow paths. . . . . . . . . . . . . . . . . . . . . . . . . .2-32
2.11.2 Manual ventilation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
2.11.3 Mechanical ventilation. . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
2.11.4 Fresh gas and O2 flush flow (with ACGO). . . . . . . . . . 2-38
2.12 Ventilator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
2.12.1 Safety features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-40
2.13 Ventilator mechanical subsystems. . . . . . . . . . . . . . . . . . . . . 2-41
2.13.1 Drive gas filter and Gas Inlet Valve. . . . . . . . . . . . . . . . 2-41
2.13.2 Pressure regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
2.13.3 Inspiratory flow control valve. . . . . . . . . . . . . . . . . . . . . 2-42
2.13.4 Drive gas flow sensor. . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
2.13.5 Drive gas check valve . . . . . . . . . . . . . . . . . . . . . . . . . .2-43
2.13.6 Bellows pop-off valve. . . . . . . . . . . . . . . . . . . . . . . . . . .2-44
2.13.7 Exhalation valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-45
2.13.8 Mechanical overpressure valve. . . . . . . . . . . . . . . . . . .2-46
2.13.9 Reservoir and bleed resistor. . . . . . . . . . . . . . . . . . . . . 2-47
2.13.10 Free breathing valve. . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
2.13.11 Breathing circuit flow sensors. . . . . . . . . . . . . . . . . . . 2-48
Carestation 620/650/650c (A1/A2)
2-2 2076163-001 03 17
2.1 Electrical system
The electrical system consists of two main computing units: the Display Unit
and the Anesthesia Computer Board (ACB). Additional subsystems interact
with these computing hosts to perform various gas delivery, ventilation, and
monitoring functions.
The Display Unit handles the main user interface functions and connections
to external devices. The Display Unit software runs on the Windows CE
operating system. Therapy functions are handled by the ACB on the Nucleus
operating system.
The various functions of the electrical system are accomplished through the
following:
• AC mains inlet (1)
• Backup batteries (2)
• AC-DC power supply (3)
• Power Management Board (PMB) (4)
• Frame Interface Board (FIB) (5)
• Optional AC outlets (6)
• Optional isolation transformer (7)
• Vent engine - Gas inlet and flow control (8)
• Anesthesia Computer Board (ACB) (9)
• Sensor Interface Board (SIB) (10)
• Display Unit (11)
• Digital LED flow board and other light boards (12)
2 Theory of Operation
03 17 2076163-001 2-3
AC
.2
4.
18
5
11
12
12
12
10
98
3
1
2
4
5
6
7
Figure 2-1 • Electrical system overview
Carestation 620/650/650c (A1/A2)
2-4 2076163-001 03 17
2.2 Power subsystem
Mains power enters the system through the AC inlet module, which includes
a line filter and line fuses.
For machines equipped with isolation transformer, the Mains power is routed
through the Transient Suppression board to the isolation transformer. The
isolated secondary output of the transformer supplies power to the universal
AC-DC power supply and the AC outlets.
For machines without transformer, the Mains power is routed through the
Transient Suppression board to the universal AC-DC power supply and the
AC outlets (if presents).
The DC output of the AC-DC power supply feeds into the PMB.
The PMB interfaces with the system through:
• the ACB connector,
• the display unit connector,
• the battery connector,
• the fan connector,
• and the AC-DC power supply connectors.
2.2.1 AC-DC power supply
This machine uses a universal power supply for AC to DC conversion. The
AC power from the Transient Suppression board or the transformer (if
equipped) feeds into the AC-DC power supply board through the AC inlet
connector (1). The AC-DC power supply converts 80~264V/47~63Hz AC
power to two DC outputs that feed into the power management board:
• +12.5 VDC as the primary output (2)
• +5 VDC as the standby output (3)
12
3
AC
.2
4.
18
6
Figure 2-2 • AC-DC power supply
2 Theory of Operation
03 17 2076163-001 2-5
2.2.2 Power Management Board
The Power Management Board (PMB) is self-monitored and self-controlled
by an on-board microcontroller. Much of its circuitry is used to monitor things
like operating temperature of the board, battery status, battery charging, and
communication to the Display Unit.
The PMB consists of an on-board DC-DC boost converter battery charger
circuit to keep the system battery backup ready to supply reserve secondary
power in case of failure of primary AC mains power. The PMB also accepts
the On/Standby switch signals and controls the power to Anesthesia
machine. When the system is turned on (On/Standby switch set to ON), the
PMB supplies power to the Display Unit, the fan, the ACB and other boards
(via the ACB).
The PMB communicates with other functional blocks through below
connections:
• to batteries (1)
• the AC-DC power supply connector (2): 5V/0.5A output
• the AC-DC power supply connector (3): 12.5V/10A output
• to display unit (4)
• to fan (5)
• to ACB (6)
1
2
3
4
5
6
AC.24.187
Figure 2-3 • Power Management Board
Carestation 620/650/650c (A1/A2)
2-6 2076163-001 03 17
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0
Figure 2-4 • Power Management Board functional block diagram
2 Theory of Operation
03 17 2076163-001 2-7
2.2.3 Battery
The system uses two 12V series connected rechargeable Sealed Lead Acid
batteries to provide backup power in case of mains power failure. The
batteries are in a float charge state most of the time. The battery charging
circuit works as long as the AC power is connected.
The battery system is capable of supporting full system functionality and
ventilation for 90 minutes when fully charged.
The electrical circuitry has inbuilt mechanism to detect reverse polarity and
protect itself, the PMB takes care of not connecting the batteries either to
charger or the system load in case of reverse polarity of battery connection.
The battery charger shuts down in a latch off mode after an over voltage
condition has been sensed. In the latch off mode, the system stops charging
the batteries. To clear this condition the system needs to be restarted.
The battery charger includes independent over-temperature (OT) protection
which will trip and inhibit the charger output if temperature of 65 ± 5 degrees
Celsius is sensed.
Carestation 620/650/650c (A1/A2)
2-8 2076163-001 03 17
2.3 System communication
RS-422 serial communication is used between the following main processors
and the subsystem processors. Various baud rates accommodate data
requirements between subsystem and host.
• PMB - DU
• ACB - DU
• ACB - SIB
• ACB - FIB
Communication between DU and Airway Gas module uses RS-485 interface.
External communication uses the standard RS-232 interface.
Anesthesia Computer CPU
TI AM3505 
Processor
Sensor Interface 
Microchip 
dsPIC30F5011
Processor
Frame Interface 
Microchip 
dsPIC30F5011
Processor
RS
42
2
RS
42
2
23
0.4
Kb
au
d
23
0.4
Kb
au
d
38.4Kbaud
11
5.
2K
ba
ud
Display Unit CPU
VIA Nano
Com Express Module
Color LCD
Touch
Controller
DU Controls
Atmel
Atmega 163
Processor
External I/O:
USB 2.0
USB 2.0
Ethernet
Ethernet
VGA
Monitor On/Standby
RS-232 Serial
Power Supply 
Controller
TI MSP430
Processor
9.6
Kb
au
d
Se
ria
l
LV
DS
9.6
Kb
au
d
Se
ria
l
RS422
RS
42
2
9.6
Kb
au
d
RS
23
2
Debug port
Airway GAS Module 
Mo
d B
us
Display Unit
AC
.24
.31
8
Figure 2-5 • System communication
2.3.1 Software Power On Self Test (POST)
Off State: AC Power is not connected to the machine and the On/Standby
switch is in the “Standby” status, the On/Standby switch light is off.
Standby State: AC Power is connected to the machine while the On/Standby
switch is in the “Standby” status, the On/Standby switch light is off.
On State: AC Power is connected to the machine and the On/Standby switch
is set to the “On” position, the On/Standby switch light is on.
2 Theory of Operation
03 17 2076163-001 2-9
When the machine is in the “Off” state (No AC power is connected to the
machine and the On/Standby switch is in the “Standby” status), there is no
machine activity. Circuitry on the PMB and on the ACB monitors the On/
Standby switch for movement.
If the machine state changes from the “Off” state to the “On” state (AC Power
connected to the machine while the On/Standby switch in the “Standby”
status), the hospital AC (stepped to approximately 180 VAC by the isolation
transformer if equipped) enters the AC-DC Power Supply. The AC voltage is
converted to +12.5 VDC. Standard CPU testsare performed (including but
not limited to RAM, ROM, Watchdog, and application CRC) and the PMB
application starts. Once the PMB has passed its CPU tests and the
application is running, the +12.5 VDC circuit to power the DU and the ACB is
activated. The DU and ACB simultaneously begin powering on. The PMB
evaluates the battery capacity and charges the batteries, if necessary.
Both the ACB and the DU begin by converting the incoming +12.5 VDC to
local needed power (+3.3 V, +4 V, +5 V, +8 V, etc.) and perform standard
CPU tests. Each board loads their software (that resides locally) and begins
their appropriate self tests described below:
• Once the ACB passes all CPU tests and application is loaded,
independent circuitry turns on 10 VA limited (+12.5 VDC) power to the
SIB and the FIB. These boards convert the incoming +12.5 VDC into
locally needed power supplies and simultaneously begin to power up.
The ACB begins testing the Gas Inlet Valve (GIV).
• Once the DU passes all the CPU tests, the DU application is started.
Part of this application is software that enables the DU CPU to
communicate with the Airway Module. These applications take longer to
start than any other system in the machine. When the applications have
completely loaded and communication has been established with the
ACB, all the systems compatibility information is transferred to the DU
for comparison with the compatibility table created during the last
software download. If the compatibility does not match, the machine
enters the System Malfunction mode.
If the On/Standby switch is changed to the “On” status while the machine is
in the “Off” state (unplugged from AC Mains), the circuitry on the PMB
engages the batteries to power the CPU on the PMB. Standard CPU tests
are performed and the PMB application starts. Once the PMB has passed its
CPU tests and the application is running, it activates the +12.5 VDC circuit to
power the DU and the ACB. The DU and ACB simultaneously begin
powering on.
Carestation 620/650/650c (A1/A2)
2-10 2076163-001 03 17
2.4 Display Unit
The Display Unit (DU) handles the majority of the anesthesia machine’s user
interface functions through its front panel controls, the touchscreen and the
LCD display. It is the primary interface to external peripherals.
The display unit’s CPU board uses an x86 architecture and chipset that is
WIN CE compatible. It is highly integrated and contains the functions of a
personal computer with a few support chips.
In addition to the main processor, additional processors handle the following
interfaces:
• Front panel controller (Atmel Atmega microprocessor)
• Monitoring module / ModBus controller (Altera FPGA)
• Display processor supports 640×480 through 1600×1200 LCDs with 256
color depth or greater
Alarm volume and display brightness are controlled in a “soft” fashion
through the user interface.
Software is updated via USB.
The DU consists of the following subassemblies and main components:
• Enclosure - EMC shielding for electrical components
• Com Express Board (1) and Carrier Board (2) contains main processor,
real time clock, memory, audio, and the following peripherals; USB,
Ethernet, UART for serial interfaces, and network IDs
• LCD - high brightness and wide viewing angle
• Touchscreen and Touch Controller (3) - Provides control of the User
Interface
• Keypad - Provide direct access to frequently used features
• ComWheel/Encoder - One optical rotary encoder for control/confirmation
of general UI parameters
• Speaker
The DU uses a lithium battery to power the real time clock when the machine
is in Standby or Off states. The DU also uses the lithium battery to retain the
CPU setup information.
LED indicators (4):
The amber LED indicates the Mod Bus to Airway Module communication
status:
• Turns ON when the display transmits
• Turns OFF when the display receives data or the board resets
• Blinks during normal communication
• Stays ON if the display transmits and nothing is received back from the
Airway Module.
The green LED indicates the DC power status, it turns ON when +12.5VDC
is available from the PMB.
2 Theory of Operation
03 17 2076163-001 2-11
1
2
3
AC.24.183
4
Figure 2-6 • Display Unit
ModBus
Altera PLD
Display Unit
Carrier Board
USB-2
Monitor/SIO
USB-1
Spare Communication channel
Mod Bus Communications
D
isplay U
nit Signal
C
onnector
COM Express Module
Octal UART
VT 1211
Communication to Power Supply
Communication to AC Board
YSerial
RS 232
On/STBY
Driver
PM Monitor
CPU
Ethernet
Ethernet
PCI
HDA
VGA
Monitor Communication and On/Standby
DC-DC
+12.5V in
Outputs = +5.0V,
+3.3V, +2.5V, +1.25V
VTT, +1.5V, VCORE
Memory LPC
 Touch 
Controller
15-inch LCD and Touch Panel
Front Panel Controller
 ATmega16 Video 
Controller
USB
Audio Codec
Ethernet
Ethernet
Supper I/O
To Touch Controller
DU Pwr
Display Connector 
Board
AC.24.184
Figure 2-7 • Display Unit block diagram
2.4.1 Display Unit connections
The Display Unit accommodates the following connections:
Carestation 620/650/650c (A1/A2)
2-12 2076163-001 03 17
• System power interface (1).
• System signal interface (2).
• Serial port - standard RS-232 interface for external communication (3).
• USB port - standard USB 2.0 interface - System Software Download port
(4).
• USB port - standard USB 2.0 interface (5).
• Network connection interface - standard Ethernet port for network
connectivity (6).
• VGA port - standard video interface (7).
• Remote monitor On/Standby (8).
2 1
8 5 4
3 2 1
7 6
AC
.2
4.
00
5
Figure 2-8 • Display Unit interfaces
2 Theory of Operation
03 17 2076163-001 2-13
2.5 Anesthesia Computer Board
The Anesthesia Computer Board (ACB) is located in the middle pan.
The ACB uses a Nucleus supported microprocessor with 4M Flash and 2M
single-bit error correcting static RAM. It includes 3 UARTs with RS-422
communications to interface with the Display Unit (DU), the Frame Interface
Board (FIB), the Sensor Interface Board (SIB) and 1 UART with RS-232
communication transceiver. The ACB also provides interfaces to the AGSS
flow sensor, drive gas flow sensor, O2 flush switch, On/Standby switch and
AC mains LED.
The ACB receives 12.5 VDC from the Power Management Board and feeds
power to the FIB, the SIB, and the Airway module.
The ACB creates drive circuits for the drive gas inlet valve and the flow
control valve. The drive circuits can be disabled by one output GPIO of the
microprocessor.
The ACB provides an input GPIO of the microprocessor to detect the state of
the patient airway overpressure. As an airway overpressure signal is
detected, it latches this signal and disables the flow control valve and the
drive gas selector valve.
The ACB also provides a backup buzzer alarm circuit for a situation when the
main alarm cannot be activated due to a major circuit failure.
1
3
2
4
5
6
7
8
9
10
11
12
AC
.2
4.
18
8
13
1. to Display Unit 8. to O2 flush switch
2. to AC mains LED 9. to Power Management Board
3. to On/Standby switch 10. Manifold pressure sensor
4. to drive gas inlet valve 11. to Frame Interface Board
5. to flow control valve 12. Airway Gas module connector
6. to drive gas flow sensor 13. AGSS pressure sensor
7. to Sensor Interface Board
Figure 2-9 • Anesthesia Computer Board connections
Carestation 620/650/650c (A1/A2)
2-14 2076163-001 03 17
AC
.2
4.
05
4
C
or
te
x-
A8
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e
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at
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ab
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(S
pe
ct
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Figure 2-10 • Anesthesia Computer Board function block diagram
2 Theory of Operation
03 17 2076163-001 2-15
2.6 Frame Interface Board
The Frame Interface Board (FIB) serves as a conduit between the
Anesthesia Computer Board (ACB) and various valves, pressure
transducers, and some light boards.
The FIB communicates the data values to the controlling CPU on the ACB
via an RS-422 serial interface. The power supply of FIB is routed through the
ACB from the PMB to the FIB.
The FIB provides below interfaces:
1. ACB
2. Light and display boards:
• Center top vaporizer light board
• Digital LED flow board
• AUX LED light (optional)
• ACGO LED light (optional)
• Bottom task light board
• Right top task light
3. Gas control valves:
• N2O valve
• Air valve
• O2 bypass valve
• O2 latching valve
4. Flow sensors:
• Air flow sensor
• N2O flow sensor
• O2 flow sensor
5. Pressure sensors:
• Air/N2O/O2 pipeline supply pressure sensor board
• Air/N2O/O2/2nd O2 cylinder supply pressure sensor
• ACGO pressure sensor
Carestation 620/650/650c (A1/A2)
2-16 2076163-001 03 17
1
1
16
6
5
4
3
2
11
12
14
15
7
8
9
10
AC
.2
4.
19
0
13
1. Frame Interface Board 9. to O2 cylinder pressure sensor
2. to right top task light board 10. to ACB
3. to Air pipeline pressure sensor board 11. to bottom task light board
4. to N2O pipeline pressure sensor board 12. to ACGO/Aux light
5. to O2 pipeline pressure sensor board 13. ACGO pressure sensor (optional)
6. to 2nd O2 cylinder pressure sensor 14. to O2 bypass/N2O selector/Air selector/O2 latching valves
7. to Air cylinder pressure sensor 15. to digital LED flow display board
8. to N2O cylinder pressure sensor 16. to center top vaporizer light board
Figure 2-11 • Frame Interface Board
2 Theory of Operation
03 17 2076163-001 2-17
AC
.2
4.
05
6
C
ab
le
to
AC
B
Harnesstovalves
O
2
M
ix
er
Fl
ow
Se
ns
or
Ai
rM
ix
er
Fl
ow
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ns
or
N
2O
M
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er
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ns
or
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G
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an
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ne
ar
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at
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hi
ng
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ul
at
or
+5
VD
+5
VA
+1
2.
5V
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LM
T4
+1
2.
5V
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LM
T4
+1
2.
5V
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LM
T4
+1
2.
5V
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T5
R
S4
22
Tr
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2
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2.
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2.
5V
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2.
5V
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C
I2
C
+5
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I2
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SP
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SP
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DigitalLEDMixerFlowDisplayBoard
+1
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er
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im
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Bo
tto
m
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ig
ht
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im
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+1
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2.
5V
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LM
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er
LE
D
Li
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N
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M
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er
LE
D
Li
gh
t
Figure 2-12 • Frame Interface Board function block diagram
Carestation 620/650/650c(A1/A2)
2-18 2076163-001 03 17
2.7 Lights and digital LED flow display boards
2.7.1 Digital LED flow display board
The digital LED flow display board (1) provides three 7-segment LEDs to
show Air, N2O, and O2 flows in the top front panel (Flow controls valves and
digital LED flow display configuration varies with regional market
requirements).
The digital LED flow display board connects to the Frame Interface Board
(FIB) via a connector (2) which handles power supply from FIB and SPI
signals to FIB.
2 1
AC
.2
4.
01
1
Figure 2-13 • Digital LED flow display board
2.7.2 Top task light boards
The central top vaporizer light board (3) routes drive signals from the Frame
Interface Board to the gas flow light board, to provide O2/Air/N2O digital LED
lights. It also transmits drive signals from Frame Interface Board to the left/
right top task light boards (4) for providing top task lights.
2 Theory of Operation
03 17 2076163-001 2-19
4
4
3
AC
.2
4.
19
2
Figure 2-14 • Top task light boards
2.7.3 Bottom task light board
The bottom task light board (5) is located in the upper rear enclosure.
The Frame Interface Board feeds 12.5 V power supply and task light drive
signals to the bottom task light board for lighting the work table area.
AC
.2
4.
19
3
5
Figure 2-15 • Bottom task light board
2.7.4 ACGO LED light and microswitch
The ACGO module (optional) in the left side enclosure includes an ACGO
LED light and a microswitch.
As the ACGO switch turns to On position, the microswitch sends signal to the
FIB. The FIB provides power supply and drive signals to the ACGO LED light
as it is actuated by the microswitch.
Carestation 620/650/650c (A1/A2)
2-20 2076163-001 03 17
2.7.5 Aux O2 + Air LED light and microswitch
The Aux O2 + Air module (optional) in the left side enclosure includes a LED
light and a microswitch.
As the Aux O2 + Air switch turns On, the microswitch sends signal to the FIB.
The FIB provides power supply and drive signals to the Aux O2 + Air LED
light as it is actuated by the microswitch.
2 Theory of Operation
03 17 2076163-001 2-21
2.8 Sensor Interface Board
The Sensor Interface Board (SIB) (1) serves as a breathing circuit interface
to the Anesthesia Computer Board (ACB). A Micro Control Unit (MCU) of the
SIB communicates data values to the controlling CPU on the ACB via a
RS-422 serial interface. The SIB is the communication conduit between the
ACB and various switches, sensors and the breathing heating circuit control:
AC
.2
4.
19
4
 1 
Figure 2-16 • Sensor Interface Board
• Patient airway pressure sensor
• Inspiratory flow sensor (including EEPROM and heating power supply)
• Expiratory flow sensor (including EEPROM and heating power supply)
• O2 Cell
• Canister release optical switch
• Breathing circuit connected optical switch
• Bag to vent optical switch
The SIB operates at a voltage of +12.5 V from the ACB.
The SIB provides a circuit for detecting the patient airway overpressure. As
the patient airway pressure rises higher than 110 cmH2O, the SIB generates
an airway overpressure signal and communicates this with ACB.
The SIB also provides an In-circuit debug port for the MCU.
Carestation 620/650/650c (A1/A2)
2-22 2076163-001 03 17
AC
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2 Theory of Operation
03 17 2076163-001 2-23
2.9 Mixer solenoid valves
The Gas Mixer module consists of following solenoid valves which control the
mixed gas flow to the vaporizer manifold:
• Air Selector Valve (1)
• N2O Selector Valve (2)
• O2 Latching Valve (3)
• O2 Bypass Valve (4)
F
F
F
1
2
34
AC
.2
4.
38
9
The Air Selector Valve and N2O Selector Valve are NC (Normal Closed)
solenoid valves. When system is turned on, the valves open and allow gas
flowing through. For systems with Aux O2 + Air feature, the N2O Selector
Valve closes as system set to Aux O2 + Air mode.
The O2 Latching Valve is open after system is turned on. The O2 Latching
Valve keeps open in case of unexpected power outage, this guarantees O2
flow supply can be continued in power outage.
The O2 Bypass Valve opens automatically when system is running Checkout
procedure.
Carestation 620/650/650c (A1/A2)
2-24 2076163-001 03 17
2.10 Gas flow through the anesthesia machine
2.10.1 Overview
Refer to "2.10.2 System pneumatic circuits" in the following pages for related
pneumatic connections between components.
Gas supplies
Gas comes into the system through a pipeline or cylinder connection. All
connections have indexed fittings, filters, and check valves (one-way valves).
Pressure transducers monitor the pipeline and cylinder pressures.
The O2 supply failure alarm is derived from the O2 pipeline and the O2
cylinder pressure transducer inputs.
A primary regulator decreases the cylinder pressures to approximately
pipeline levels. A pressure relief valve helps protect the system from high
pressures.
To help prevent problems with the gas supplies:
• Install yoke plugs on all empty cylinder connections.
• When a pipeline supply is adequate, keep the cylinder valve closed.
O2 flow
Pipeline or regulated cylinder pressure supplies O2 directly to the ventilator
(for O2 drive gas), the optional venturi suction (for O2 drive gas), gas control
module and the optional auxiliary O2 supply connection.
The O2 flush valve supplies high flows of O2 to the breathing circuit through
the ACGO assembly (if equipped) when the flush button is pressed. The
flush pressure switch monitors activation of the flush valve.
As O2 flow arrives in the gas control module, a secondary regulator regulates
the O2 gas flow to a constant pressure and supplies it to the O2 flow control
valve.
The pipeline or cylinder supply pressure sensor monitors the O2 supply
pressure. If the pressure is too low, an alarm appears on the display.
Air and N2O flow
Pipeline or regulated cylinder pressure supplies Air directly to the ventilator
(for Air drive gas), the optional venturi suction (for Air drive gas), and the gas
control module.
When the system is On, Air flows through the Air flow sensor and Air selector
valve, to the Air flow control valve. For machines using Air as drive gas, there
is a secondary regulator regulates the Air flow to 30 psi before the flow
sensor.
When the system isOn, N2O flows through the N2O flow sensor and N2O
selector valve, to the balance regulator, then arrives the N2O flow control
valve.
2 Theory of Operation
03 17 2076163-001 2-25
The balance regulator controls the flow of N2O to the flow control valve.
Oxygen pressure at the control port adjusts the output of the regulator. This
stops the N2O flow during an O2 supply failure and ensures that the hypoxic
gas pressures decrease with the O2 supply pressure. Changes in O2
pressure do not affect Air flow.
A chain link system (Link-25) on the N2O and O2 flow controls helps keep
the O2 concentration higher than 21% (approximate value) at the gas control
module outlet.
Mixed gas
The mixed gas flows through the flowmeter, Aux O2 + Air module (optional),
through the vaporizer manifold and vaporizer that is On, to the ACGO
assembly (optional). In Aux O2 + Air mode, the mixed gas is directed to the
Aux O2 + Air outlet.
The ACGO assembly directs the mixed gas to the selected circuit: Breathing
circuit or the ACGO port. In the ACGO assembly, a MOPV valve limits
pressure at ACGO port to no greater than 110 cmH2O approximately.
Carestation 620/650/650c (A1/A2)
2-26 2076163-001 03 17
2.10.2 System pneumatic circuits
AC
.2
4.
04
8
P
4
P
4
2
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2
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28
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68
71
69 69 69
66 67 70 73
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55 60
61
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36 32
32
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P P
13 13
63
72 72
6
34
21
26 13
16
65
13
13
2 Theory of Operation
03 17 2076163-001 2-27
1. Auxiliary O2, 0-10 l/min, optional 38. Mechanical overpressure valve, 110 cmH2O
2. Pipeline: O2, Air, N2O 39. Free breathing check valve
3. Shuttle valve 40. Atmosphere
4. Cylinder: O2, Air, N2O 41. Bellows housing
5. Venturi drive gas connection 42. Bellows
6. Vent drive gas select 43. Pop-off valve
7. O2 flush 44. Exhalation, 2.0 cmH2O bias
8. Pressure switch 8 psi 45. Vent engine manifold pressure
9. Gas control module 46. 200 ml reservoir
10. Air flow sensor 47. Bleed resistor
11. O2 flow sensor 48. Vent to ambient
12. N2O flow sensor 49. Bag/Vent switch
13. Filter 50. Bag
14. Air selector valve 51. APL valve, 0.5 - 70 cmH2O
15. N2O selector valve 52. Negative pressure relief valve
16. O2 secondary regulator 53. Absorber canister
17. O2 bypass valve 54. CO2 bypass
18. O2 latching valve 55. Inspiratory flow sensor
19. Balance regulator 56. Inspiratory check valve
20. Needle valve 57. O2 cell
21. Link-25 58. Expiratory check valve
22. Total flowmeter, 0 - 10 l/min 59. Expiratory flow sensor
23. Auxiliary O2+Air (optional) 60. Inspiratory flow transducer
24. Selectatec™ Manifold, two vaporizer option 61. Expiratory flow transducer
25. Vaporizer 62. Paw transducer
26. Air regulator, optional, 30 psi 63. Patient Y or patient connection
27. ACGO, optional 64. Gas monitor
28. Mechanical overpressure valve, 110 cmH2O 65. Default factory connection
29. ACGO outlet port, optional 66. Passive AGSS
30. ACGO transducer, optional 67. Relief valve, -0.3 cmH2O
31. Vent engine 68. Relief valve, 10 cmH2O
32. Filter 69. To disposal system
33. Drive gas inlet valve 70. Active AGSS, High vacuum
34. Regulator, 25 psi (15 LPM) 71. Reservoir
35. Inspiratory flow control valve 72. To pressure sensor in ACB
36. Drive gas flow sensor 73. Active AGSS, Low vacuum
37. Drive gas check valve, 3.5 cmH2O bias
Figure 2-18 • System pneumatic diagram
2.10.3 Suction regulators
Pipeline vacuum
The suction regulator uses an external vacuum source.
Venturi drive vacuum
The suction regulator uses an internal, venturi derived vacuum source.
Drive gas (internally plumbed Air) enters the Venturi Module at the drive port
(1). As the drive gas passes through the venturi module, a vacuum is created
Carestation 620/650/650c (A1/A2)
2-28 2076163-001 03 17
at port 2. The drive gas exits the venturi module at port 3 and is exhausted
outside the machine through the muffler (4).
The control port (5) on the venturi module responds to pneumatic signals
from the front panel switch on the Suction Control Module (6) to turn the
venturi vacuum drive gas on or off. The check valve (7) helps prevent
pressurization of the suction circuitry if the exhaust is occluded or the venturi
unit fails.
Figure 2-19 • Venturi suction
2.10.4 Flow control
Needle valves (one for each gas) adjust gas flows. Clockwise rotation
decreases flow. Counterclockwise increases flow. Mechanical stops set
minimum flows for all gases. The link system sets the maximum ratio of N2O
to O2.
The Link-25 Proportioning System sets a minimum O2
concentration in the fresh gas stream when only O2 and N2O
are used. Use of an absorber or another gas can still cause a
hypoxic mixture to be delivered to the patient, especially at low
O2 flow rates.
Minimum flows
At minimum flow, two tabs prevent clockwise rotation of the valve stem. One
tab (1) is on the stop collar; the other (2) is on the valve body.
WARNING
2 Theory of Operation
03 17 2076163-001 2-29
1 2
AC
.2
4.
08
4
Link system
The chain link system helps assure an approximate minimum 1 to 3 ratio of
flow between O2 and N2O. When engaged (minimum O2 concentration), a
tab (3) on the O2 knob is in contact with a tab (4) on the O2 sprocket so that
the O2 and N2O knobs turn together:
• an increase in N2O flow causes an increase in O2 flow,
• a decrease in O2 flow causes a decrease in N2O flow.
3 4
AC
.2
4.
08
3
Higher concentrations of O2 are possible when the link system is not
engaged: either by reducing the N2O flow below the point of engagement or
by increasing O2 flow above the point of engagement.
When the N2O flow is below the point of engagement, increasing the N2O
flow turns the O2 sprocket without changing the O2 flow. At the point of
engagement, the tab on the O2 sprocket makes contact with the tab on the
O2 knob. Once the linkage is engaged, turning the N2O flow control
counterclockwise (increase in N2O flow) also turns the O2 knob
counterclockwise (increase in O2 flow) to maintain a nominal 25% minimum
O2 concentration.
Decreasing the N2O flow from the engagement point rotates the tab on the
O2 sprocket away from the tab on the O2 knob. Increasing the O2 flow
rotates the knob tab away from the sprocket tab. Either action increases the
O2 concentration above 21%. Sufficiently decreasing O2 flow or increasing
the N2O flow brings the two tabs back into contact and engages the linkage.
The kick-in point is defined as the N2O flow at which the N2O valve becomes
engaged with the O2 valve flowing at 200 ml/min. This engagement point is
an arbitrary benchmark that assists in calibrating the proportioning system.
The position of the kick-in is set in the factory. During field calibration, you set
the O2 flow to 200 ml/min and the N2O flow to the kick-in flow (usually in the
Carestation 620/650/650c (A1/A2)
2-30 2076163-001 03 17
range of 400 to 700 ml/min) and then install the sprockets with the O2 knob/
sprocket engaged.
2 Theory of Operation
03 17 2076163-001 2-31
2.11 Flow through the breathing system
2.11.1 Overview of flow paths
This section looks at four types of flow paths.
• Ventilation paths: How gas flows from the drive source (bag or bellows)
to and from the patient.
• Fresh gas paths: Fresh gas can flow from the machine interface directly
to the patient through the inspiratory check valve, or through the
absorber into the expiratory flow, or directly to an external circuit through
the optional auxiliary common gas outlet.
• Scavenged gas paths: APL or Pop-off.
2.11.2 Manual ventilation
Manual inspiration
The Bag/Vent switch closes the ventilator path (B).
Drive gas flows from the bag (1), through the absorber (2), into the breathing
circuit module, and through a unidirectional valve (inspiratory check valve) to
the patient (3).
During inspiration, fresh gas (FG) flows from the machine into the inspiratory
limb, upstreamof the inspiratory check valve.
Carestation 620/650/650c (A1/A2)
2-32 2076163-001 03 17
Figure 2-20 • Gas flow during manual inspiration
Manual expiration
The Bag/Vent switch keeps the ventilator path closed (B).
Gas flows from the patient (4), through a unidirectional valve (expiratory
check valve), and into the bag (5).
During exhalation, fresh gas flows backwards through the absorber (FG) into
the expiratory limb, downstream of the expiratory check valve.
2 Theory of Operation
03 17 2076163-001 2-33
Figure 2-21 • Gas flow during manual expiration
APL valve
The APL valve sets a pressure limit for manual ventilation.
As the APL knob is turned, it puts more or less force on the APL disc and
seat (6). As circuit pressure (7) approaches the pressure placed on the APL
disc, any additional pressure will cause the disc to lift and gas vents to the
scavenging system (8).
Carestation 620/650/650c (A1/A2)
2-34 2076163-001 03 17
Figure 2-22 • Flow through the APL valve
2.11.3 Mechanical ventilation
Mechanical inspiration
The Bag/Vent switch closes the manual path (V). Pilot pressure (P) closes
the exhalation valve.
Drive gas flows through the drive gas selector valve (optional) which is open,
through the inspiratory flow control valve which is open during mechanical
inspiration, then flows through the drive gas check valve and enters the
bellows housing.
Drive gas (D) pushes down on the top of the corrugated bellows. Gas flows
from the inside of the corrugated bellows (1) , flows through the absorber (2)
2 Theory of Operation
03 17 2076163-001 2-35
where the CO2 is removed, through a unidirectional valve (inspiratory check
valve) to the patient (3). During inspiration, fresh gas flows into the
inspiratory limb, upstream of the inspiratory check valve.
Figure 2-23 • Gas flow during mechnical inspiration
Mechanical expiration
During mechanical expiration, the Bag/Vent switch keeps the manual path
closed (V).
Drive gas flow stops and the exhalation valve opens. Exhaled gas flows from
the patient (4), through a unidirectional valve (expiratory check valve) and
Carestation 620/650/650c (A1/A2)
2-36 2076163-001 03 17
into the bellows (5). Residual drive gas (D) flows out of the bellows housing
to the scavenging system (6).
During exhalation, fresh gas flows backwards through the absorber (FG) into
the expiratory limb, downstream of the expiratory check valve.
Figure 2-24 • Gas flow during mechanical expiration
Pop-off valve
The pop-off valve limits the pressure inside the bellows to 2.5 cmH2O above
the drive gas pressure. This normally occurs when the bellows reaches the
top of the housing at the end of exhalation (5).
Excess gas (6) vents to the scavenging system (7) (if equipped) through the
pop-off valve and the respiratory valve.
2 Theory of Operation
03 17 2076163-001 2-37
Figure 2-25 • Flow through the pop-off valve
2.11.4 Fresh gas and O2 flush flow (with ACGO)
To (Circle) breathing system
Fresh gas flows from the vaporizer manifold outlet to the ACGO assembly.
When the O2 flush button is pushed, O2 flush flow joins the fresh gas flow in
the ACGO assembly.
As the ACGO selector switch is set to the Circle position, fresh gas flow is
channeled to the breathing system.
Carestation 620/650/650c (A1/A2)
2-38 2076163-001 03 17
To ACGO (Non-circle) outlet
Fresh gas flows from the vaporizer manifold outlet to the ACGO assembly.
When the O2 flush button is pushed, O2 flush flow joins the fresh gas flow in
the ACGO assembly.
As the ACGO selector switch is set to the ACGO position, fresh gas flow is
channeled to the ACGO outlet.
A pressure transducer integrated in the FIB monitors the fresh gas pressure
channeled to the outlet. The outlet pressure is limited to less than 110
cmH2O approximately by a MOPV valve.
2 Theory of Operation
03 17 2076163-001 2-39
2.12 Ventilator
The ventilator components in the Carestation 620/650/650c (A1/A2) system
are electronically-controlled and pneumatically-driven.
Ventilator features:
• Sensors in the breathing circuit are used to control and monitor patient
ventilation and measure inspired oxygen concentration. This lets the
ventilator compensate for compression losses, fresh gas contribution,
valve and regulator drift, and small leakages in the breathing absorber,
the bellows, and the system.
• User settings and microprocessor calculations control breathing
patterns. User interface settings are kept in non-volatile memory.
• Mechanical ventilation is started with the Bag/Vent switch on the
breathing system.
• Ventilator hardware is regularly monitored by software tests.
• An RS-232 serial digital communications port connects to and
communicates with external devices.
• Pressure and volume modes are selectable by the operator.
• Exhausted drive gas and bellows pressure relief valve gases are mixed
and go through the ventilator exhalation valve, and then vented to to the
Anesthesia Gas Scavenging System (AGSS).
2.12.1 Safety features
The system has below safety features:
• Airway overpressure protection linked to Pmax setting.
• Dual redundant, software independent, airway overpressure devices.
• Volume over-delivery limits and protection.
• Proprietary hose connections and fixed manifolds.
• 10 VA electrical power limiting to potential oxygen enriched environment.
• 110 psi burst overpressure protection.
Carestation 620/650/650c (A1/A2)
2-40 2076163-001 03 17
2.13 Ventilator mechanical subsystems
See "Pneumatic circuit diagram" for the complete pneumatic/mechanical
subsystem diagram. The mechanical subsystems for the ventilator include:
Pneumatic Vent Engine
• Drive gas inlet filter
• Gas Inlet Valve
• Inspiratory flow sensor
• Inspiratory flow control valve
• Drive gas check valve
• Mechanical Overpressure Valve (MOPV)
• Supply gas pressure regulator
• Exhalation valve
• Bleed resistor
• Free breathing valve
Bellows assembly
Breathing circuit flow sensors
2.13.1 Drive gas filter and Gas Inlet Valve
Drive gas (can be selected from O2 or Air) enters the vent engine (1) through
a 2-micron filter (2) that is located under the Gas Inlet Valve (3).
During normal operation the Gas Inlet Valve (GIV) is open to let supply gas
flow. The GIV shuts off supply gas to the ventilator under failure conditions
detected by the CPU or over-pressure switch. The output from the GIV stays
at the filtered supply gas pressure.
F
P
1
AC.24.255
3
2
Figure 2-26 • Inlet filter and GIV
2 Theory of Operation
03 17 2076163-001 2-41
2.13.2 Pressure regulator
The pressure regulator (4) is a non-relieving pressure regulator that regulates
high pressure filtered supply gas down to 172 kPa (25 psi).
F
P
AC
.2
4.
25
6
4
Figure 2-27 • Pressure regulator
2.13.3 Inspiratory flow control valve
The inspiratory flow control valve (5) is controlled by the CPU. Signals are
sent to the flow control valve of the necessary flow determined by ventilator
settings and sensor signals. The flow control valve modulates the incoming
172 kPa (25 psi) drive gas to an output from 0 to 120 liters per minute at
pressures ranging from 0 to 100 cmH2O.
F
P
AC
.2
4.
25
7
5
Figure 2-28 • Inspiratory flow control valve
Carestation 620/650/650c (A1/A2)
2-42 2076163-001 03 17
2.13.4 Drive gas flow sensor
The drive gas flow sensor (6) monitors the flow valve gas flow. The drive gas
flow sensor sents signals to ACB for mornitoring breathing circuit leak and
flow control.
F
P
AC.24.258
6
Figure 2-29 • Drive gas flow sensor
2.13.5 Drive gas check valve
The drive gas check valve (7) is used downstream of the inspiratory flow
control valve to control gas flow to the bellows housing. The drive gas check
valve is biased shut by an integral weight that supplies approximately 3.5
cmH2O of bias pressure before permitting flow downstream to the bellows
housing. During the inhalation phase, gas pressure from the flow control
valve closes the exhalation valve and keeps the drive gas check valve open,
allowing drive gas flow into the bellows housing,and pushing gas inside the
bellows to the patient circuit. During the exhalation phase, the inspiratory flow
control valve is partially closed, which causes pilot pressure to keep the
exhalation valve open and close the drive gas check valve, allowing the
excess patient gas as well as drive gas to route to the gas scavenging
system.
2 Theory of Operation
03 17 2076163-001 2-43
F
P
AC.24.259
7
Figure 2-30 • Drive gas check valve
2.13.6 Bellows pop-off valve
The Bellows assembly is the interface between drive gas and the patient
circuit in the breathing system. The pop-off valve (8) in the bellows assembly
limits pressure in the patient circuit during exhalation phase.
The pop-off valve is normally closed, maintaining approximately 1.5 cmH2O
in the breathing system in a no flow condition, enough to keep the bellows
inflated. It is piloted closed during inspiration and remains closed until the
bellows is refilled during exhalation. If the pressure in the patient circuit
exceeds 4 cmH2O, the pop-off valve opens to exhaust excess mixed gas
(including fresh gas and patient circuit gas) flow. Excess mixed gas is
discharged through the port underneath the bellows base to the gas
scavenging system.
Carestation 620/650/650c (A1/A2)
2-44 2076163-001 03 17
F
P
AC.24.143
8
Figure 2-31 • Pop-off valve
2.13.7 Exhalation valve
The exhalation valve contains an elastomeric diaphragm that is used along
with the flow valve to control the pressures in the breathing circuit.
Pilot pressure from the manifold enters the exhalation valve through the pilot
pressure port (9) on the bottom.
The exhalation valve includes three ports on top that connect to the bellows
base manifold:
• Drive gas pass through (10)
• Drive gas return and pop-off valve flow (11)
• APL exhaust flow to scavenging (12)
A port at the back of the exhalation valve (13) connects to the AGSS
connector that directs all the exhaust flow to the scavenging system.
The exhalation valve is normally open. Approximately 2 cmH2O of pilot
pressure is necessary to close the valve.
During inspiratory phase, pilot pressure from the inspiratory flow control valve
acts on the diaphragm and keeps the exhalation port closed.
During expiratory phase, pilot pressure from the inspiratory flow control valve
stops, the exhalation port is open, gas flows from the bellows housing to the
scavenging port.
2 Theory of Operation
03 17 2076163-001 2-45
F
P
AC.24.266
13
12 11
10
9
Figure 2-32 • Exhalation valve
2.13.8 Mechanical overpressure valve
The mechanical overpressure valve (MOPV) (14) is a mechanical valve that
operates regardless of electrical power. It functions as a third level of
redundancy to the ventilator's pressure limit control functions, supplying
pressure relief at approximately 110 cmH2O.
F
P
AC.24.260
14
Figure 2-33 • MOPV
Carestation 620/650/650c (A1/A2)
2-46 2076163-001 03 17
2.13.9 Reservoir and bleed resistor
The reservoir (15) is a 200 ml chamber that dampens the manifold (pilot)
pressure pulses to the exhalation valve.
The bleed resistor (16) is a “controlled leak” from 0 to 12 l/min in response to
circuit pressures from 0 to 100 cmH2O. The small quantity of pneumatic flow
exhausting through the bleed resistor permits control of the exhalation
valve's pilot pressure by modulation of the valve output. The bleed resistor
exhausts only clean drive gas and must not be connected to a waste gas
scavenging circuit. The output is routed away from the electrical components
to make sure that systems using oxygen drive gas meet the 10VA limitation
requirement for oxygen enrichment.
FF
PP
AC.24.2611516
Figure 2-34 • Reservoir and bleed resistor
2.13.10 Free breathing valve
The free breathing valve (17) helps assure the patient can spontaneously
breathe. The ventilator is programmed to supply a specified number of
breaths per minute to the patient. If, in between one of these programmed
cycles, the patient needs a breath (spontaneous), the free breathing valve
permits the patient to inhale. The free breathing valve is closed on
mechanical inspiration.
2 Theory of Operation
03 17 2076163-001 2-47
F
P
AC.24.262
17
Figure 2-35 • Free breathing valve
2.13.11 Breathing circuit flow sensors
Two flow sensors (18) are used to monitor inspiratory and expiratory gas
flow:
• The inspiratory flow sensor is located at the input of the breathing
system inspiratory check valve.
• The expiratory flow sensor is located at the input to the breathing system
expiratory check valve.
Feedback from both the inspiratory and expiratory transducers is used to:
• supply tidal volumes that make allowances for the effects of fresh gas
flow and circuit compressibility.
• supply signals for expiratory tidal volume monitoring and the breath rate.
The breathing circuit flow sensors include two flex boards (one for each
sensor). Each flex board contains a heating circuit and an EEPROM.
Each flex board has an I2C interface for communication with SIB. The SIB
provides +12.5 VDC power with a minimum of 200 mA supply current to each
flex board for flow sensor heating circuit, and provides +5 VDC with a
minimum of 200 mA supply current to each flex board for EEPROM.
Carestation 620/650/650c (A1/A2)
2-48 2076163-001 03 17
AC.24.263
18
NO
NC
P
NONC
P P
F
P
F
Figure 2-36 • Flow sensors
2 Theory of Operation
03 17 2076163-001 2-49
2-50 2076163-001 03 17
3 Checkout Procedures
Checkout Procedures
In this section
3.1 Inspect the system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.1.1 Verify annunciators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.2 System checkout overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.3 System checkout procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
3.3.1 Full Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.3.2 Test Results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.4 Individual tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.4.1 Ventilator Leak test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.4.2 Vaporizer Leak test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.4.3 Gas Controls test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.4.4 Circuit Leak test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.4.5 Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.5 Low pressure leak test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3.5.1 Low pressure leak test (with ACGO). . . . . . . . . . . . . . . .3-14
3.5.2 Low pressure leak test (without ACGO). . . . . . . . . . . . . 3-15
3.6 Bellows drop test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
3.7 Pipeline and cylinder tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.7.1 Cross-Connect and high pressure leak test. . . . . . . . . . 3-19
3.7.2 O2 supply alarm test. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3.8 Flow sensing test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
03 17 2076163-001 3-1
3.9 Flow control test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
3.10 Flush flow test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-25
3.11 Vaporizer back pressure and interlock test. . . . . . . . . . . . . . 3-26
3.12 Alarm tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
3.13 Auxiliary O2 flowmeter tests. . . . . . . . . . . . . . . . . . . . . . . . . .3-29
3.14 Integrated suction regulator tests (if equipped). . . . . . . . . . . 3-30
3.14.1 Gauge accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-30
3.14.2 Flow test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .3-30
3.14.3 Regulation test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-31
3.14.4 Vacuum bleed test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
3.14.5 Vacuum leak test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
3.15 Power failure test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32
3.16 Electrical safety test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
Carestation 620/650/650c (A1/A2)
3-2 2076163-001 03 17
3.1 Inspect the system
The upper shelf weight limit is 25kg.
Do not leave gas cylinder valves open if the pipeline supply is in
use. Cylinder supplies could be depleted, leaving an insufficient
reserve supply in case of pipeline failure.
Before testing the system, ensure that:
• The equipment is not damaged.
• Components are correctly attached.
• The breathing circuit is correctly connected, not damaged.
• Pipeline gas supplies are connected.
• Cylinder valves are closed.
• Scavenging is connected and adjusted properly if needed.
• Models with cylinder supplies have a cylinder wrench attached to the
system.
• Models with cylinder supplies have a reserve supply of O2 connected to
the machine during system checkout.
• The casters are not loose and the brakes are set and prevent
movement. Verify that the marks on the screws and the adjacent areas
are still aligned. Record the check after completion of this step.
Make sure the screw tightness check is completed and the
inspection result is recorded.
• The power cord is connected to a wall outlet. The mains indicator comes
on when AC Power is connected.
3.1.1 Verify annunciators
The Carestation 620/650/650c (A1/A2) system includes several annunciators
(speakers) that produce audible tones in response to system alarms and
other hardware or software fault conditions. Verify the integrity of the
annunciators at system startup.
1. Press the On/Standby switch to turn on the system.
2. After several seconds into power-up:
Verify that an audible “chirp” is heard (Anesthesia Computer Board),
then a second audible “chirp” is heard from the Display Unit (BIOS).
3. After the self-testing in the power-up process is completed:
Verify that an audible “beep” is heard from the Display Unit (Display
Control Board).
If any of the audible annunciators are not heard, troubleshoot the related
circuitry before continuing with the checkout procedure.
CAUTION
WARNING
WARNING
3 Checkout Procedures
03 17 2076163-001 3-3
3.2 System checkout overview
The Checkout menu is displayed when the Checkout softkey is selected
from Standby Mode or when Checkout History is selected from the System
Setup menu.
Checkout menu includes the following items:
1. Full Test
2. Individual Tests
• Ventilator Leak
• Vaporizer Leak
• Gas Controls
• Circuit leak
• Calibration
The Full Test is a series of individual tests run in succession. If user
interaction is required during the test, instructions appear in the screen, test
continues once required steps are completed. The test runs automatically
and beeps to indicate when it is finished.
The individual tests performed by Full Test include the Ventilator Leak test,
Vaporizer Leak test, Gas Controls test, and Circuit leak test. As the Full
Test is selected and started, this four tests will be performed automatically.
When one test completes, the next test begins. Once all the tests have
completed, the tests end with an outcome of pass or fail.
The Individual Tests can be selected and performed separately.
Carestation 620/650/650c (A1/A2)
3-4 2076163-001 03 17
3.3 System checkout procedure
To display the Checkout menu, select the Checkout softkey on the button
bar or select Checkout History on the System Setup menu. General
instructions for starting the system checkout procedure:
1. Connect the scavenging.
2. Connect the gas supply.
3. Connect a patient circuit.
4. Connect a bag to the Bag port.
5. Check the absorber and the absorbent.
6. Check that the vaporizers are off and filled with agent.
7. Select a test from the menu.
8. Complete required instructions on the screen and start the test.
3.3.1 Full Test
The Full Test runs automatically and beeps to indicate when it is finished. If
user interaction is required during the test, instructions appear on the screen,
the test continues once required steps completed.
The Full Test does the following:
• Ventilator Leak check (Ventilator circuit)
• Vaporizer Leak check (Ventilator circuit with vaporizer)
• Gas Controls check (The flow control valves in the gas control module)
• Circuit leak check (Bag circuit)
• Scavenging Flow check
• Battery check
• Other items check as required in the Checklist
1. Select Full Test from Checkout main menu and follow the instructions
on the screen to perform the test.
2. If a check fails, follow the instructions to perform a recheck or accept the
results.
3. When all tests are completed, the test results will be shown on the
screen.
Full Test - Ventilator Leak
The Full Test - Ventilator Leak test checks the gas leak in ventilator circuit
including the breathing circuit.
Follow the instructions on the screen to process:
1. Set the Bag/Vent switch to Vent.
3 Checkout Procedures
03 17 2076163-001 3-5
2. (ACGO option only) Set the ACGO switch to Circle.
3. (Aux gas option only) Set the Aux gas switch to Off.
4. Open the patient Y (wye) and select Confirm.
5. Occlude the patient Y (wye) and select Confirm.
6. Test runs automatically.
When the check passes, the system will transition to the next test
automatically.
Full Test - Vaporizer Leak
As the Full Test - Ventilator Leak test completes and passes, the Full Test
- Vaporizer Leak test starts automatically.
The Full Test - Vaporizer Leak checks the gas leak in vaporizer including
ventilator circuit with breathing circuit.
The patient circuit compliance is also checked during this test. Actually it is
checked after the gas leak test in the vaporizer including ventilator circuit with
breathing circuit.
Follow the instructions on the screen to process:
1. Select the vaporizers to test, then select Confirm.
If two vaporizers are installed, you can select both vaporizers to test
both, or select one vaporizer at a time and test them separately.
2. Turn on the vaporizer(s) and set the concentration to below test point(s),
then select Confirm:
Vaporizer type Test point
Tec 6 Plus 12%
Tec 7 1%
3. Test runs automatically.
4. Turn off the vaporizer(s) and select Confirm.
5. The patient circuit compliance test is started automatically. When the
check passes, the system will transition to the next test automatically.
Full Test - Gas Controls
The Full Test - Gas Controls checks the flow control valves and gas flow
control operation. This test starts automatically as the vaporizer test in the
Full Test completes. Follow the screen instructions to process this test.
1. Turn off all the gas flows.
2. For configuration with O2, N2O, Air:
• Adjust the N2O flow to higher than 6.0 l/min.
The system will test the N2O valve, O2 valve, link system in the
mixer, and the O2 bypass valve. If the O2 flow increases with N2O
with a O2 concentration higher than 25%, O2 flow increasing stops
when N2O flow increasing is stopped, and O2 bypass valve function
Carestation 620/650/650c (A1/A2)
3-6 2076163-001 03 17
normally, this test step passes and next test instruction is displayed
out.
• Adjust the O2 flow to minimum (closed).
If the N2O flow decreases with O2 with a O2 concentration higher
than 25%, N2O flow decreasing stops when O2 flow decreasing is
stopped, this step passes and next instruction is displayed.
• Adjust the Air flow to higher than 3.0 l/min.
The system will check the Air valve. If the Air flow reaches 3.0 l/min
and then stops as the solenoid is closed, this test passes.
• Close the Air flow.
3. For configuration with O2, N2O:
• Adjust the N2O flow to higher than 6.0 l/min.
The system will test the N2O valve, O2 valve, link system in the
mixer,and the O2 bypass valve. If the O2 flow increases with N2O
with a O2 concentration higher than 25%, O2 flow increasing stops
when N2O flow increasing is stopped, and O2 bypass valve function
normally, this test step passes and next test instruction is displayed.
• Adjust the O2 flow to minimum (closed).
If the N2O flow decreases with O2 with a O2 concentration higher
than 25%, N2O flow decreasing stops when O2 flow decreasing is
stopped, this step passes.
4. For configuration with O2, Air:
• Adjust the O2 flow to higher than 3.0 l/min.
The system will test the O2 valve, the O2 bypass valve.
• Adjust the O2 flow to minimum (closed).
• Adjust the Air flow to higher than 3.0 l/min.
The system will check the Air valve. If the Air flow reaches 3.0 l/min
and then stops as the solenoid is closed, this test passes.
• Close the Air flow.
5. When this check passes, the system will transition to the next test
automatically.
Full Test - Circuit Leak
The Full Test - Circuit leak test checks the bag circuit leak.
Follow the instructions on the screen to process:
1. Set the Bag/Vent switch to Bag.
Make sure the patient Y (wye) port is occluded and a bag is connected to the
bag port.
--
2. Set the APL valve halfway between 30 and 70 cmH2O.
3. Select Confirm. Test runs automatically.
Note
3 Checkout Procedures
03 17 2076163-001 3-7
4. When the circuit leak test is completed, make sure the patient Y (wye)
port is opened to atmosphere and select Confirm.
5. The checklist appears. Check or set up according to instructions and
select Confirm.
The checklist is configurable. Refer to "4.6.1 Configurable Checklist" for
more details.
--
• Verify the O2 flush operates correctly.
• Connect the respiratory gas monitor to the patient circuit.
• Check that the patient monitor settings are correct.
• Check that the backup ventilation is available and operational.
• Check that the patient suction is set up correctly.
• Check the pressure of the backup O2 supply.
3.3.2 Test Results
As all Full Test items are completed, the Full Test Results show on the
screen.
Test Item Test result Status Other test
information
Ventilator Leak Ventilator Leak test result
Compliance value
(of patient circuit)
Pass/Fail/Skipped Test date and
time
Vaporizer Leak
(Left)
Ventilator Leak test result Pass/Fail/
Skipped/NA
Test date and
time/Not Tested
Vaporizer Leak
(Right)
Ventilator Leak test result Pass/Fail/
Skipped/NA
Test date and
time/Not Tested
Gas Controls Pass/Fail/Skipped Test date and
time
Circuit Leak Circuit Leak test result Pass/Fail/Skipped Test date and
time
Scavenging
Flow
Pass/Fail/Skipped Test date and
time
Battery Ok/Fail/Skipped Test date and
time
Checklist Completed/Skipped Test date and
time
Leak test result Criterion
Pass Leak is less than 250 ml/min.
Note
Carestation 620/650/650c (A1/A2)
3-8 2076163-001 03 17
Leak test result Criterion
Fail Leak is greater than 750 ml/min.
Conditional Pass Leak is between 250 ml/min to 750 ml/min.
Skipped Testing is cancelled.
NA Not tested.
The acceptance leakage limits are set in the Service Installation menu.Note
3 Checkout Procedures
03 17 2076163-001 3-9
3.4 Individual tests
Individual tests allow you to perform any combination of single checks. These
checks are helpful if there is a specific problem/alarm and you want to test
only that portion of the system.The checks do not automatically move on to
the next check.
3.4.1 Ventilator Leak test
The Ventilator Leak test checks the gas leak in the ventilator circuit
including the breathing circuit, it also checks the patient circuit compliance.
Follow the instructions on the screen to process:
1. Set the Bag/Vent switch to Vent.
2. (ACGO option only) Set the ACGO switch to Circle.
3. (Aux gas option only) Set the Aux gas switch to Off.
4. Open the patient Y (wye).
5. Make sure the bellows is fully collapsed and select Confirm.
6. Occlude the patient Y (wye) and select Confirm.
Test runs automatically.
7. Set the Bag/Vent switch to Bag.
8. The display shows the following checks results when the test is
completed:
• The test Pass/Fail result
• Leak value
• Compliance value (of patient circuit)
Result Criterion*
Pass Leak is less than 250 ml/min.
Fail Leak is greater than 750 ml/min.
Conditional Pass Leak is between 250 ml/min to 750 ml/min.
*The acceptance leakage limits are set in the Service Installation menu.
3.4.2 Vaporizer Leak test
The Vaporizer Leak test checks the gas leak in the vaporizer including
ventilator circuit and breathing circuit.
This test should be performed during system installation and planned
maintenance.
Note
Carestation 620/650/650c (A1/A2)
3-10 2076163-001 03 17
1. Set the Bag/Vent switch to Vent.
2. (ACGO option only) Set the ACGO switch to Circle.
3. (Aux gas option only) Set the Aux gas switch to Off.
4. Open the patient Y (wye).
5. Make sure the bellows is fully collapsed and select Confirm.
6. Occlude the patient Y (wye) and select Confirm.
7. Select the vaporizer to test and then select Confirm.
8. Turn on the testing vaporizer and set the concentration to the test point
specified in below table, then select Confirm:
Set the vaporizer concentration to a test point in each test, then test other
test points one by one after the former test is completed.
--
Vaporizer type Test point
Tec 6 Plus 1%, 6%, 12% and 18%
Tec 7 1%, 3%, 5% and 8%
9. Test runs automatically.
10. Turn off the vaporizer(s) and select Confirm.
11. Set the Bag/Vent switch to Bag.
12. When the test is completed, When the test is completed, the screen
shows the leak value of the tested vaporizer including the ventilator
circuit and breathing circuit.
The Vaporizer Leak test pass/fail specification:
Result Criterion*
Pass Leak is less than 250 ml/min.
Fail Leak is greater than 750 ml/min.
Conditional Pass Leak is between 250 ml/min to 750 ml/min.
* The acceptance leakage limits are set in the Service Installation menu.
13. Repeat steps 1 through 12 to test other test points or another vaporizer
(if equipped).
All test points specified for each vaporizer should be tested.
--
3.4.3 Gas Controls test
The Gas Controls test checks the flow control valves and gas flow control
operation. Follow the screen instructions to process this test.
1. Set the Bag/Vent switch to Vent.
Note
Note
3 Checkout Procedures
03 17 2076163-001 3-11
2. (ACGO option only) Set the ACGO switch to Circle.
3. (Aux gas option only) Set the Aux gas switch to Off.
4. Occlude the patient Y (wye) and select Confirm.
5. Turn off all the gas flows.
6. For configuration with O2, N2O, Air:
• Adjust the N2O flow to higher than 6.0 l/min.
The system will test the N2O valve, O2 valve, link system in the
mixer, and the O2 bypass valve. If the O2 flow increases with N2O
with a O2 concentration higher than 25%, O2 flow increasing stops
when N2O flow increasing is stopped, and O2 bypass valve function
normally, this test step passes and next test instruction is displayed.
• Adjust the O2 flow to minimum (closed).
If the N2O flow decreasing with O2 with a O2 concentration higher
than 25%, N2O flow decreasing stops when O2 flow decreasing is
stopped, this step passes and next instruction is displayed.
• Adjust the Air flow to higher than 3.0 l/min.
The system will check the Air valve. If the Air flow reaches 3.0 l/min
and then stops as the solenoid is closed, this test passes.
• Close the Air flow.
7. For configuration with O2, N2O:
• Adjust the N2O flow to higher than 6.0 l/min.
The system will test the N2O valve, O2 valve, link system in the
mixer, and the O2 bypass valve. If the O2 flow increases with N2O
with a O2 concentration higher than 25%, O2 flow increasing stops
when N2O flow increasing is stopped, and O2 bypass valve function
normally, this test step passes and next test instruction is displayed.
• Adjust the O2 flow to minimum (closed).
If the N2O flow decreases with O2 with a O2 concentration higher
than 25%, N2O flow decreasing stops when O2 flow decreasing is
stopped, this steppasses.
8. For configuration with O2, Air:
• Adjust the O2 flow to higher than 3.0 l/min.
The system will test the O2 valve, the O2 bypass valve.
• Adjust the O2 flow to minimum (closed).
• Adjust the Air flow to higher than 3.0 l/min.
The system will check the Air valve. If the Air flow reaches 3.0 l/min
and then stops as the solenoid is closed, this test passes.
• Close the Air flow.
9. Set the Bag/Vent switch to Bag.
10. The display shows the results when test is completed.
Carestation 620/650/650c (A1/A2)
3-12 2076163-001 03 17
3.4.4 Circuit Leak test
The Circuit leak test checks the bag circuit leak.
Follow the instructions on the screen to process:
1. Set the Bag/Vent switch to Bag.
Make sure a bag is connected to the bag port.
2. (ACGO option only) Set the ACGO switch to Circle.
3. (Aux gas option only) Set the Aux gas switch to Off.
4. Occlude the patient Y (wye) and select Confirm.
5. Set the APL valve between 30 and 70 cmH2O.
6. Select Confirm. Test runs automatically.
7. Open the patient Y (wye) and select Confirm.
8. When the test is completed, the screen shows the pass or fail result with
the leak value.
The Circuit Leak acceptance limits are set in the Service Installation
menu. See "4.4.3 Leakage Limits" for more details.
3.4.5 Calibration
The Calibration under the Checkout main menu includes the following
calibration items:
• Flow and Pressure
• Weekly O2 Cell
• Monthly O2 Cell
• Airway Gas
Access for above calibration items are also available in the User
Calibrations menu in Service Mode, see "4.9.1 User Calibrations" for more
details on these calibrations.
Note
3 Checkout Procedures
03 17 2076163-001 3-13
3.5 Low pressure leak test
Do not use a system with a low-pressure leak. Anesthetic gas
will go into the atmosphere, not into the breathing circuit.
The negative Low P Leak check measures machine leaks before the
breathing system and between the gas mixer and the common gas outlet.
This check is not mandatory requirement for system installation and planned
maintenance, it could be used as assistant testing method for
troubleshooting or other service check when necessary.
3.5.1 Low pressure leak test (with ACGO)
1. Test the leak test device.
 
AC
.2
4.
01
0
 
• Put your hand on the inlet of the leak test device. Push hard for a
good seal.
• Squeeze the bulb to remove all air from the bulb.
• If the bulb completely inflates in less than 60 seconds, replace the
leak test device.
2. Make sure the system is turned off.
3. Set the ACGO selector switch to ACGO.
4. Turn off all vaporizers.
5. Test the anesthesia machine for low-pressure leaks:
• Turn all flow controls fully clockwise (closed). Do not overtighten.
• Connect the leak test device to the ACGO outlet.
• Squeeze the bulb repeatedly until it is empty.
• If the bulb completely inflates in 30 seconds or less, there is a leak
in the low-pressure circuit.
6. Test each vaporizer for low-pressure leaks:
• Set the vaporizer to the test points listed in below table:
Vaporizer Type Test Points
Tec 6 plus 1%, 6%, 12% and 18%
Tec 7 1%, 3%, 5% and 8% (if equipped)
WARNING
Note
Carestation 620/650/650c (A1/A2)
3-14 2076163-001 03 17
• Repeat step 5.
• Set the vaporizer to Off.
• Test the remaining vaporizers.
7. Remove the test device from the ACGO outlet.
Agent mixtures from the low-pressure leak test stay in the
system. Always flush the system with O2 after the low pressure
leak test (1 l/min for one minute).
Turn off all vaporizers at the end of the low-pressure leak test.
--
8. Flush the system with O2:
• Press the On/Standby switch to turn on the system.
• Set the O2 flow to 1 l/min.
• Continue the O2 flow for one minute.
• Turn the O2 flow control fully clockwise (closed).
9. Return ACGO switch to the Circle position.
3.5.2 Low pressure leak test (without ACGO)
1. Test the leak test device.
 
AC
.2
4.
01
0
 
• Put your hand on the inlet of the leak test device. Push hard for a
good seal.
• Squeeze the bulb to remove all air from the bulb.
• If the bulb completely inflates in less than 60 seconds, replace the
leak test device.
2. Make sure the system is turned off.
3. Turn off all vaporizers.
4. Test the anesthesia machine for low-pressure leaks:
• Turn all flow controls fully clockwise (closed). Do not overtighten.
• Unlatch the canister latch.
• Remove the canister.
• Open the release button cover (1).
WARNING
3 Checkout Procedures
03 17 2076163-001 3-15
1
AC
.2
4.
19
6
• Press the breathing circuit release button (2) to unlatch the lower
breathing circuit module.
AC
.2
4.
19
7
2
• Connect the test device to the common gas port in the breathing
system.
AC
.2
4.
19
5
• Squeeze the bulb repeatedly until it is empty.
• If the bulb completely inflates in 30 seconds or less, there is a leak
in the low-pressure circuit.
5. Test each vaporizer for low-pressure leaks:
• Set the vaporizer to the test points listed in below table:
Carestation 620/650/650c (A1/A2)
3-16 2076163-001 03 17
Vaporizer Type Test Points
Tec 6 plus 1%, 6%, 12% and 18%
Tec 7 1%, 3%, 5% and 8% (if equipped)
• Repeat step 4.
• Set the vaporizer to Off.
• Test the remaining vaporizers.
6. Remove the test device from the common gas inlet port.
Agent mixtures from the low-pressure leak test stay in the
system. Always flush the system with O2 after the low pressure
leak test (1 l/min for one minute).
Turn off all vaporizers at the end of the low-pressure leak test.
--
7. Flush the system with O2:
• Press the On/Standby switch to turn on the system.
• Set the O2 flow to 1 l/min.
• Continue the O2 flow for one minute.
• Turn the O2 flow control fully clockwise (closed).
8. Replace the breathing circuit module and absorber canister.
WARNING
3 Checkout Procedures
03 17 2076163-001 3-17
3.6 Bellows drop test
This check is NOT performed during the system “Checkout.” This test is used
to aid in troubleshooting if the system “Checkout” fails.
1. Set the Bag/Vent switch to Vent.
2. Occlude the patient wye port.
3. Push the O2 flush button until the bellows is full.
4. After the initial drop, if the bellows falls more than 100 ml/min, it has a
leak.
Note
Carestation 620/650/650c (A1/A2)
3-18 2076163-001 03 17
3.7 Pipeline and cylinder tests
3.7.1 Cross-Connect and high pressure leak test
To prevent damage:
• Open the cylinder valve slowly.
• Do not force the flow controls.
Do not leave gas cylinder valves open if the pipeline supply is in
use. Cylinder supplies could be depleted, leaving an insufficient
reserve supply in case of pipeline failure.
Ensure the Gas Supply window is visible on the screen.
1. Connect the pipeline supplies one at a time and ensure that the
corresponding display indicates pipeline pressure.
2. Disconnect all pipeline supplies.
• Open each cylinder valve.
• Make sure that each cylinder has sufficient pressure. If not, close
the applicable cylinder valve and install a full cylinder.
3. Test the cylinder supplies for a high pressure leak. Make sure that each
cylinder has sufficient pressure:
• If equipped, turn the auxiliary Of flow control fully clockwise (no
flow).
• If equipped, turn off venturi derived suction.
• Turn on the system.
• Start PC Service Application.
• Access the Gas Delivery Schematic interface from the Gas Delivery
Subsystem main menu.
• Set all the mixer solenoid valves (Mixer Air Solenoid Valve, Mixer
N2O Solenoid Valve, O2 Latching Valve and O2 Bypass Solenoid
Valve) to off.
• Open each cylinder.
• Record the cylinder pressure.
• Close each cylinder valve.
• Record the cylinder pressure after one minute. If the pressure
decreases more than 690 kPa (100 psi) for all gases, there is a
leak.
If a cylinder supply fails this test, install a new cylinder gasket and
do this step again.
4. Close all cylinder valves.
5. Turn off the system.
CAUTION
WARNING
3 Checkout Procedures
03 17 2076163-001 3-19
3.7.2 O2 supply alarm test
1. Turn on the system.
2. Establish O2, Air, and (if equipped) N2O gassupplies.
3. Select Start Case and Start Case Now.
4. Set all flow controls to 3 l/min.
5. Stop the O2 supply. (Disconnect the pipeline supply or close the cylinder
valve.)
6. Verify that the O2 supply pressure low alarm occurs.
7. Verify that the N2O (if equipped) and O2 flows drop to zero on the flow
indicators.
If Air is set as the balance gas, verify that Air continues to flow.
8. Reconnect the O2 supply.
9. Select End Case and End Case Now.
Carestation 620/650/650c (A1/A2)
3-20 2076163-001 03 17
3.8 Flow sensing test
To perform the flow sensing test, you must attach a flow measuring test
device to the mixer outlet tubing and access the Gas Diagnostics function of
the Service Diagnostics application (PC Service App).
1. Remove the top shelf.
2. Connect a test device capable of reading 15 l/min to the mixer outlet
tubing.
3. If the system includes an N2O supply, when flowing N2O connect a tube
from the flow device to a scavenger source. (For most digital test
devices, the low flow module or low flow port should be used.)
Some flowmeter test devices are not backpressure compensated.
Connecting the output of the flowmeter test device to the input of the
vaporizer manifold can cause readings outside limits.
--
4. On the Main Menu of the Service Application, select Gas Delivery
Schematic from the Gas Delivery Subsystem tab. Select the Mixer Air
Solenoid Valve, Mixer N2O Solenoid Valve and O2 Bypass Solenoid
Valve to Off.
5. Set the O2 Latching Valve to On. Adjust the O2 flow control and verify
the readings of the O2 flow sensor.
6. Set the O2 Latching Valve to Off and set the Mixer Air Solenoid Valve to
On. Adjust the Air flow control and verify the readings of the Air
flowsensor.
If system does not include N2O, skip steps 7 through 9.
--
7. Disconnect the 6mm tube (1) from the R-OUT port on the mixer O2
module. Disconnect the 1/8 inch tube (2) from pilot port on the mixer O2
module and occlude the pilot port with a 1/8 inch plug (3) (Part Number:
1006-3611-000). Connect the 1/8 inch tube (2) in line with the R-OUT
port on the mixer O2 module with a 6mm tube (4) (Part Number:
1001-3062-000) and an adapter connector (5) (Part Number:
1006-3711-000). This setup supplies the pilot pressure to the balance
regulator during the N2O flow sensing test.
Note
Note
3 Checkout Procedures
03 17 2076163-001 3-21
AC.24.387
2
4
3
1
5
8. Set the Mixer Air Solenoid Valve to Off, and set the Mixer N2O Solenoid
Valve to On. Adjust the N2O flow control and verify the readings of the
N2O flow sensor.
9. Remove the N2O flow sensing test setup and recover the original tubing
connection. Reassemble the machine.
Verify Flow Sensor Reading
Set Flow on the flow
test device
Lower Limit (l/min) Upper Limit (l/min)
100% O2 at 1.5 l/min 1.3 1.7
100% O2 at 12 l/min 10.8 13.2
100% Air at 1.5 l/min 1.3 1.7
100% Air at 12 l/min 10.8 13.2
100% N2O at 1.2 l/min 1.1 1.3
100% N2O at 10 l/min 9.0 11.0
Carestation 620/650/650c (A1/A2)
3-22 2076163-001 03 17
3.9 Flow control test
Nitrous oxide (N2O) flows through the system during this test.
Use a safe and approved procedure to collect and remove it.
1. Set up the system:
• Connect the AGSS to a gas scavenging system.
• Attach a patient circuit to the breathing system; do not plug the
patient port.
• Attach a bag to the bag port (or plug the bag port).
• Set the Bag/Vent switch to Bag.
• Adjust the APL valve to minimum.
2. Connect the pipeline supplies or slowly open the cylinder valves.
3. Set the ACGO selector switch to Circle (if equipped).
4. Turn on the system and enter the normal operation mode.
5. If equipped with O2 sensor, confirm that the O2 sensor measures 21% in
room air and 100% in pure O2. If not, calibrate the O2 sensor.
6. Turn all flow controls fully clockwise (minimum flow).
7. Make sure that all flowtubes (digital) minimum flow.
8. Check the Link proportioning system concentration (increasing N2O
flow). Observe the following precautions:
• Start with all valves at the minimum setting.
• Adjust only the N2O flow control.
• Increase the N2O flow as specified in the following table and make
sure the O2 concentration or the O2 flow is within the allowed
range.
For machines with O2 monitoring, the O2 concentration can be
observed on the display. For machines without O2 monitoring, access
the Gas Delivery Status interface in PC Service Application and check
the O2 flow.
Allow the O2 monitor to stabilize. At the lower flows, the O2 monitor may
take up to 90 seconds to stabilize.
--
• If you overshoot a setting, turn the O2 flow control clockwise till the
N2O flow decreases to the previous setting before continuing the
test.
Set the N2O flow (l/min) O2 concentration O2 flow (l/min)
0.2 21% minimum > 0.05
1.6 21% to 34% 0.42 to 0.83
5.0 21% to 34% 1.32 to 2.58
9.0 21% to 34% 2.39 to 4.64
WARNING
Note
3 Checkout Procedures
03 17 2076163-001 3-23
9. Check the proportioning system concentration (decreasing O2 flow).
Observe the following precautions:
• Start with N2O valve at the maximum setting.
• Adjust only the O2 flow control.
• Decrease the O2 flow as specified in the table and make sure the
O2 concentration or the N2O flow is within the allowed range.
For machines with O2 monitoring, the O2 concentration can be
observed on the display. For machines without O2 monitoring, access
the Gas Delivery Status interface in PC Service Application and check
the N2O flow.
Allow the O2 monitor to stabilize. At the lower flows, the O2 monitor may
take up to 90 seconds to stabilize.
--
• If you overshoot a setting, turn the N2O flow control
counterclockwise till the O2 flow increases to the previous setting
before continuing the test.
Set the O2 flow (l/min) O2 concentration N2O flow (l/min)
2.5 21% to 34% 4.85 to 9.40
1.0 21% to 34% 1.94 to 3.76
0.4 > 21% < 1.50
• Turn the N2O flow control fully clockwise to minimum stop.
10. Check the linearity of the Air flow control.
Set the O2 flow (l/min) Set the Air flow (l/min) Measured O2
4.0 3.0 61% to 71%
3.5 6.0 45% to 55%
1.5 8.0 28% to 38%
11. If the flow control test fail, calibrate the flow control needle valves and
the Link system. See "5.3 Flow control needle valves calibration" and 
"5.4 Link system calibration" for details.
Note
Carestation 620/650/650c (A1/A2)
3-24 2076163-001 03 17
3.10 Flush flow test
1. Set the Bag/Vent switch to Vent.
2. Attach a patient circuit to the breathing system and plug the patient port.
3. For ACGO equipped machines, set the ACGO selector switch to Circle
position.
4. Ensure that the bellows is completely collapsed.
5. Measure the amount of time it takes to fill the bellows when the O2 Flush
button is fully and continuously depressed.
6. Repeat above measurement two more times (deflate bellows by
removing the plug from the patient port).
7. The bellows should fill in 1.3 to 3 seconds.
Possible causes of failure:
• Large leak in breathing system (if long filling time).
• ACGO selector valve is not correctly connected (if short filling time).
3 Checkout Procedures
03 17 2076163-001 3-25
3.11 Vaporizer back pressure and interlock test
Anesthetic agent comes out of the circuit during this test. Use a
safe, approved procedure to collect and remove the agent.
1. Set up the system before the test.
• Connect the AGSS to a gas scavenging system.
• Attach a patient circuit and plug the patient port.
• Attach a bag to the bag port (or plug the bag port).
• Set the Bag/Vent switch to Bag.
• Adjust the APL valve to minimum.
2. If ACGO presents, set the ACGO selector switch to Circle position.
3. Turn on the system.
4. Set the O2 flow to 6 l/min.
5. Adjust the vaporizer concentration from 0 to 1% one click at a time. The
O2 flow must not decrease more than 1 l/min through the full range. If
the O2 flow decreases more than 1 l/min:
• Install a different vaporizer and try this step again.
• If the O2 flow decreases less than 1 l/min with a different vaporizer,
the malfunction is in the first vaporizer.
• If the O2 flow alsodecreases more than 1 l/min with a different
vaporizer, the malfunction is in the anesthesia system. Do not use
the system until it is serviced (repair vaporizer manifold port valve).
6. Complete steps 4 through 5 for each vaporizer and vaporizer position.
7. Make sure you cannot turn on more than one vaporizer at the same
time.
8. Turn off the system.
WARNING
Carestation 620/650/650c (A1/A2)
3-26 2076163-001 03 17
3.12 Alarm tests
Test the system to verify that alarms are functioning.
If an airway module is installed, the FiO2 readings are taken from the module
instead of from the O2 cell. A sample line must be connected from the airway
module to the breathing circuit to test the O2 alarms.
1. Connect a test lung to the patient connection.
2. Start a case.
3. Set the Bag/Vent switch to Vent.
4. Set the O2 concentration to 30%, and allow the O2 reading to stabilize.
For machines configured to individual gas control, set the O2 flow to
approximately 500 ml/min and Air flow to approximately 5 l/min.
5. Test the O2 alarms:
• Set the FiO2 Low alarm limit to 50%. Make sure an FiO2 low alarm
occurs.
• Set the FiO2 Low alarm limit back to 21% and make sure that the
FiO2 low alarm cancels.
• Set the FiO2 High alarm limit to 50%.
• Push the O2 flush.
• Make sure the FiO2 high alarm occurs.
• Set the FiO2 High alarm limit back to 100%. Make sure that the
FiO2 high alarm cancels.
6. Test the MVexp low alarm:
• Set the MV Low alarm limit to greater than the measured minute
volume.
• Make sure that a MVexp low alarm occurs.
• Set the MV Low alarm limit to Off.
7. Test the Ppeak high alarm:
• Set Pmax to less than the peak airway pressure.
• Make sure that the Ppeak high alarm occurs.
• Set Pmax to the desired level.
8. Test the PEEP high. Blockage? alarm:
• Set the APL valve to 70 cmH2O.
• Set the Bag/Vent switch to Bag. Mechanical ventilation stops.
• Block the patient connection and push the O2 flush button.
• Make sure that the PEEP high. Blockage? alarm occurs after
approximately 15 seconds.
9. Test the Ppeak low. Leak? alarm:
• Unblock the patient connection.
• Set the Bag/Vent switch to Vent.
Note
3 Checkout Procedures
03 17 2076163-001 3-27
• Set the tidal volume and total flow to minimum.
• Other alarms such as MVexp low can occur.
• Make sure that the Ppeak low. Leak? alarm occurs.
10. Set all alarm limits to approved clinical values.
Carestation 620/650/650c (A1/A2)
3-28 2076163-001 03 17
3.13 Auxiliary O2 flowmeter tests
If an auxiliary O2 flowmeter is equipped, perform the following testing
procedure:
1. Open the O2 cylinder valve or connect an O2 pipeline.
2. Rotate the flow control clockwise (decrease) to shut off the flow. The ball
should rest at the bottom of the flow tube and not move.
3. Rotate the flow control counterclockwise (increase). The ball should rise
immediately after rotation is begun. It should rise smoothly and steadily
with continued counterclockwise rotation. When a desired flow is set, the
ball should maintain in a steady position.
4. Occlude the auxiliary O2 outlet. The ball should rest at the bottom of the
flow tube and not move. A ball that does not rest at the bottom of the
flow tube indicates a leak and requires service.
5. Rotate the flow control clockwise to shut off the flow.
3 Checkout Procedures
03 17 2076163-001 3-29
3.14 Integrated suction regulator tests (if equipped)
There are two types of integrated suction systems for the Carestation
620/650/650c (A1/A2) anesthesia machine:
• Continuous Vacuum Regulator, Three-Mode, Pipeline Vacuum
• Continuous Vacuum Regulator, Three-Mode, Venturi Derived Vacuum
For Pipeline Vacuum systems, a vacuum source of at least 500 mmHg (67
kPa or 20 in Hg) is required for testing. The supply open flow must be a
minimum of 50 l/min.
For Venturi Derived Vacuum systems, an Air source of at least 282 kPa (41
psi) is required for testing.
3.14.1 Gauge accuracy
To check gauge accuracy, be sure that the test gauge is capable of
measuring 0 to 550 mmHg with an accuracy of ±1% of reading.
1. With the suction regulator turned to the Off position, verify the gauge
needle is within the zero range bracket.
2. Connect a test device capable of measuring -550 to 0 mmHg to the
suction patient port.
3. Turn the mode selector switch to On (the left).
4. Ensure that the vacuum test gauge is in agreement with the suction
vacuum gauge ± 38 mmHg/5 kPa at the following test points.
Test points
Suction vacuum gauge Test gauge tolerance
100 mmHg (13.3 kPa) 62 - 138 mmHg (8.3 - 18.4 kPa)
300 mmHg (40 kPa) 262 - 338 mmHg (35 - 45 kPa)
500 mmHg (66.7 kPa) 462 - 538 mmHg (61.6 - 71.7) kPa)
3.14.2 Flow test
To check flow accuracy, be sure that the flow test device is capable of
measuring 0 - 30 l/min with an accuracy of ± 2% of reading.
1. Connect the patient port of the suction regulator to the flow test device.
2. Rotate the suction control knob fully clockwise (increase).
3. Turn the mode selector switch to On (the left) and verify that the flow
rate is:
Note
Note
Carestation 620/650/650c (A1/A2)
3-30 2076163-001 03 17
• at least 20 l/min.
4. Disconnect the test flowmeter.
3.14.3 Regulation test
1. Turn the mode selector switch to On (the left).
2. Occlude the patient port of the suction regulator.
3. Set the vacuum regulator gauge to 100 mmHg/13 kPa.
4. Open and close the patient port several times.
5. With the patient port occluded, the gauge should return to 100 mmHg/13
kPa within a tolerance of ± 10 mmHg/1.3 kPa.
3.14.4 Vacuum bleed test
1. Occlude the patient port of the suction regulator.
2. Set the vacuum regulator gauge to 100 mmHg/13 kPa.
3. Turn the mode selector switch to Off and observe the gauge needle. It
must return to the zero range bracket or stop pin within 10 seconds.
3.14.5 Vacuum leak test
1. Turn the mode selector switch to Off.
2. Rotate the suction control knob a minimum of two full turns in the
clockwise direction (increase suction) to ensure its setting is not at the
Off position.
3. Occlude the patient port of the suction regulator.
4. Observe the suction gauge and verify that the needle does not move.
5. Rotate the suction control knob fully counterclockwise to ensure its
setting is at the fully off position.
6. Turn the mode selector switch to On (the left).
7. Observe the suction gauge and verify that the needle does not move.
3 Checkout Procedures
03 17 2076163-001 3-31
3.15 Power failure test
1. Connect the AC power cord to a wall outlet. Make sure the mains
indicator (1) light is on.
1
2
AC
.2
4.
02
0
2. Press the On/Standby switch (2) to turn on the system.
3. Start a case.
4. Unplug the AC power cord with the system turned on.
5. Make sure that the power failure alarm comes on.
6. Make sure the following message is displayed:
Plug in power cable. On battery.
7. Connect the power cable again.
8. Make sure the alarm cancels.
Carestation 620/650/650c (A1/A2)
3-32 2076163-001 03 17
3.16 Electrical safety test
Make sure the system is completely assembled and all accessory devices
are connected to electrical outlets.
1. Connect an approved test device (for example; UL, CSA, or AAMI) and
verify that the leakage current is less than:
Voltage Max. Leakage Current
120/100 Vac 300 μAmps
220/240 Vac 500 μAmps
2. Make sure that the resistance to ground is less than 0.2Ω between an
exposed metal surface and the ground pin on the power cord.
3 Checkout Procedures
03 17 2076163-001 3-33
3-34 2076163-001 03 17
4 Installation and Service Menus
Installation and Service Menus
In this section
4.1 Installation and Service menu structure. . . . . . . . . . . . . . . . . . . 4-3
4.1.1 Menu structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
4.2 Super User. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.3 Service menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.4 Installation menu. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .4-6
4.4.1 Configuration menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.4.2 Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.4.3 Leakage Limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
4.4.4 Factory Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
4.5 Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.5.1 Options Key-Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.5.2 Installed Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.5.3 Options Upgrade. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.6 Copy Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4.6.1 Configurable Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . .4-11
4.7 Software/Hardware Information menu. . . . . . . . . . . . . . . . . . . 4-13
4.8 Service Logs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4.9 Calibrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4.9.1 User Calibrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
4.9.2 Manifold P Span. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
03 17 2076163-001 4-1
4.9.3 Inspiratory Flow Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
4.9.4 Bleed Resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
4.9.5 Paw Span (or Paw and ACGO Span) . . . . . . . . . . . . . . 4-20
4.9.6 Zero Gas Transducers. . . . . . . . . . . . . . . . . . . . . . . . . . .4-22
4.9.7 Mixer Flow Sensor Zero. . . . . . . . . . . . . . . . . . . . . . . . . 4-23
4.9.8 Zero ACGO (or Zero AGSS or Zero ACGO and AGSS). . 4-
23
4.10 Display Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Carestation 620/650/650c (A1/A2)
4-2 2076163-001 03 17
4.1 Installation and Service menu structure
This section describes the Service level functions that are part of the main
software installed in the anesthesia machine.
See "8 Software Download" for how to download system software.
See "12 Service Application" for the Windows based service application used
to run service diagnostics and other service tests.
4.1.1 Menu structure
The Service menu structure has two levels which are password protected:
• Super User
(refer to the User’s Reference Manual for “Super User Mode” details)
• Installation and Service
The Super User level (super-user password) supports standard hospital
system configurations.
The Installation and Service level requires the service password and
supports machine configurations, enabling software options, service
calibrations and display diagnostics.
Follow the menu structure to access the various service screens:
• on the System Setup menu, select Super User Password to access
Super User menu
(with super-user password: 16-4-34)
• on the Super User menu, select Installation and Service to access
Service menu
(with service password: 26-23-8)
Super User and Service Password use is limited to authorized
personnel who are trained and qualified. Do not share
passwords with unauthorized personnel.
Do not leave the machine unattended in Super User or Service
mode. Exit Super User or Service modes after task completion.
WARNING
4 Installation and Service Menus
03 17 2076163-001 4-3
4.2 Super User
Use the super-user password to access the Super User menus: “16-4-34”.
The password use is limited to authorized personnel who are
trained and qualified. Do not share passwords with unauthorized
personnel.
Do not leave the machine unattended in Super User mode. Exit
Super User mode after task completion.
The Super User menus support the selection of default hospital preferences
for the anesthesia machine. Refer to the User’s Reference Manual for a
detailed description of the Super User functions.
Menu Items Functions
Gas Usage Cumulative Gas Usage; ecoFLOW*; Agent
Costs*
System Config. Colors; Units; Ventilator Settings; Alarm Settings;
Parameter Settings; Trend Setup; Pages Setup
Case Defaults ADULT; PEDIATRIC; LOCAL; CUSTOM 1;
Volume Apnea Setup
Procedures** Vital Capacity, Cycling
Copy Logs Copy logs to USB
Installation and Service Installation and service mode is restricted to
qualified, trained technicians.
Exit To exit, turn the power switch Off. Any setting
changes go into effect when you turn the system
back On.
* "ecoFLOW" and "Agent Costs" are only displayed if the ecoFLOW option is
installed and enabled.
** "Procedures" is only displayed if the Vital Capacity + Cycling option is
installed and enabled.
Refer to Section 4.5 for more details.
WARNING
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4-4 2076163-001 03 17
4.3 Service menu
Use the service-level password to access the Service menu: “26-23-8”.
The password use is limited to authorized personnel who are
trained and qualified. Do not share passwords with unauthorized
personnel.
Do not leave the machine unattended in Service mode. Exit
Service mode after task completion.
Whenever the service menu is entered, “Enter Service dd-mmm-yyyy
hh:mm:ss” is recorded in the Event log.
Menu Items Functions
Installation Config.; Units; Leakage Limits; Factory Defaults
Options Installed Options; System Information
Copy Config. Save to USB; Load from USB
SW and HW Versions Scroll through Software and Hardware system
information.
Service Logs All Recent; Error Log; Alarm Log; Key Press Log;
Copy Logs; Reset Logs
Calibrations User Calibrations; Manifold P Span; Inspiratory
Flow Valve; Bleed Resistor; Paw Span; Zero Gas
Transducers
Display Diagnostics Test LEDs; Test Speaker; Test Battery; Test Hard
Keys; Test LCD; Calibrate Touch
Super User Return to Super User mode
Exit Turn off power to exit.
WARNING
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03 17 2076163-001 4-5
4.4 Installation menu
Menu Item Functions
Config. Decimal Marker; Language; Gas Supply Colors; O2
Flowtube; Gas Supply Type; Drive Gas; Altitude; ACGO
Installed; Aux Gas
Units Patient Weight; CO2; Gas Supply Pressure; Paw;
Currency*
Leakage Limits Auto Pass Limit; Fail if Greater than
Factory Defaults Set all device settings (defaults, configurations, units,
etc.) not related to hardware back to factory defaults.
* "Currency" is only displayed if the ecoFLOW option is installed. See "4.5
Options" for details.
4.4.1 Configuration menu
Menu Item Functions Values Comments
Decimal
Marker
Select decimal
delineator
0.01, 0 01 or 0,01
Language Select language
of screen texts
Chinese (simplified), Czech,
Danish, Dutch, English,
Finnish, French, German,
Greek, Hungarian, Italian,
Japanese, Norwegian, Polish,
Portuguese, Russian,
Spanish, Swedish, Turkish
Default: English
Gas supply
Colors
Change color of
O2, N2O, and
Air
ANSI, ISO, Neutral ANSI: O2 green, Air
yellow, N2O blue;
ISO: O2 white, Air
black/white, N2O
blue; Neutral: All
gases white
O2 Flow tube* Set O2 flow tube
on left or right
hand side to
match installed
flowhead
Left, Right Factory setting only,
must match
installed hardware
Gas Supply
Type*
Select installed
supply gases
Air, N2O, Air+N2O Factory setting only,
must match
installed hardware
Drive Gas Change drive
gas to match
machine
configuration
Air, O2 Must match
installed hardware
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Menu Item Functions Values Comments
Altitude Change altitude
used for gas
calculations
- 400 to 3000 m in 100-m
increments
If local altitude is
greater than 3,000
meters, set to 3,000
meters.
ACGO
Installed**
Used to enable
or disable ACGO
Yes, No
Aux Gas
Installed**
Set Aux Gas NO, O2+Air
AGSS
Installed
Set AGSS Passive
Fixed 25
ISO Low FLow
ISO High Flow
12.7 mm, no indicator
The Configuration settings must exactly match the installed
hardware for the system to work correctly.* DO NOT change the configuration of the O2 Flow tube or the
Gas Supply Type, these can ONLY be set at factory.
**ACGO and Aux Gas feature can only be available alternatively in same
system; only the enabled configuration option will be displayed in the menu
structure.
4.4.2 Units
This is the same menu that is accessible from the Super User/System
Configuration/Units menu.
Menu Item Message text Values
Patient Weight Change weight unit: kg or lb. kg or lb
CO2 Change CO2 unit: %, kPa, or mmHg. %, kPa, or mmHg
Gas Supply Pressure Change gas supply pressure unit: kPa,
psi, or bar.
psi, kPa, bar
Paw Change Paw unit: kPa, hPa, cmH2O,
mmHg, mbar.
kPa, hPa, cmH2O,
mmHg, or mbar
Currency* Change currency units $ € ¥ £ INR (Indian
Rupees) KRW
(Korean Won) KR
(Krone) TWD
(Taiwan Dollar) CHF
(Swiss Franc)
* This item only shows on machines equipped with ecoFLOW option.
WARNING
Note
4 Installation and Service Menus
03 17 2076163-001 4-7
4.4.3 Leakage Limits
Menu Item Default Values
Auto Pass Limit
(Acceptance Limit)
250 ml/min 100 to 250 ml/min in increments
of 10 ml/min
Fail if greater than (Fail
Limit)
750 ml/min 100 to 750 ml/min in increments
of 10 ml/min
When the Acceptance Limit and Fail Limit are set to the same value,
decreasing the Fail Limit decreases the Acceptance Limit to the same value.
When the Acceptance Limit and Fail Limit are set to the same value,
increasing the Acceptance Limit increases the Fail Limit to the same value.
4.4.4 Factory Defaults
Set all device settings (defaults, configurations, units, etc.) not related to
hardware back to factory defaults.
Refer to "Default case type settings" in the User’s Reference Manual.
Menu Items Values
Reset to Factory Defaults No, Yes
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4.5 Options
The Options menu is used to configure system software to include the
features that the customer has purchased. The included features are shown
in the Installed Options list.
4.5.1 Options Key-Code
Menu Item Key-Code Values
Entry 1 Enter first key-code value. 0 to 9, A to Z, ~, !,
@, #, $, %, ^, *, (,), ?Entry 2 Enter second key-code value.
Entry 3 Enter third key-code value.
Entry 4 Enter fourth key-code value.
Entry 5 Enter fifth key-code value.
Entry 6 Enter sixth key-code value.
Entry 7 Enter seventh key-code value.
Submit New Key Confirm entries for key-code.
When options are added, “Add <option> dd-MMM-yyy hh:mm:ss” is written to
the event log.
If more than one option is added, each option is listed separately.
4.5.2 Installed Options
The Installed Options list shows which options are enabled.
Menu Item Values* Vent Mode
Installed Options
PCV Yes, No Pressure Control
PCV-VG Yes, No Pressure Control-Volume Guarantee
SIMV VCV Yes, No Synchronized Volume Control
SIMV PCV Yes, No Synchronized Pressure Control
SIMV PCV-VG Yes, No Synchronized Pressure Control-Volume
Guarantee
PSVPro Yes, No Pressure Support Ventilation with an Apnea
Backup
CPAP + PSV Yes, No Continuous Positive Airway Pressure +
PSV
VCV Cardiac Bypass Yes, No Allow VCV during cardiac bypass.
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03 17 2076163-001 4-9
Menu Item Values* Vent Mode
ecoFLow Yes, No
Pause Gas Yes, No
Cycling + Vital
Capacity
Yes, No
Auto Alarms** Yes, No
System Information
Current Key*** XXXAXBC
Control Board ID*** XXX
* Yes if option enabled. No if disabled.
** The Auto Alarms feature is an optional item.
***The Current Key code and Control Board ID are unique for each machine.
4.5.3 Options Upgrade
1. Perform the Options Installer Manufacturing Initialization:
• Insert the Options Installation USB disk to the USB port in the back
of the Display Unit.
• Turn on the system.
• In the “Manufacturing Init” screen select YES to perform the
initialization.
• Turn off the system when the initialization is completed.
2. Upgrade the system with XX option:
• Turn on the system to boot from the USB disk again.
• Select YES in the “OK to Add Options” menu.
• After the installation is finished you can see the “Upgrade Is
Complete” screen.
3. Check the upgrade result:
• Turn off the system and remove the USB disk.
• Turn on the system and enter the Service Mode.
• Check the “Option” Menu and verify that the new intalled option is
enabled.
4. Repeat step 1 to 3 to install other options if needed.
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4.6 Copy Configuration
Copy configuration includes:
• All super-user settings and defaults except External Gas Monitor and
VCV Cardiac Bypass.
• All service settings except Ventilator drive gas.
Uninstalled options do not copy. Make sure all purchased options are
installed (Options Menu) before copying a configuration.
Copy Config. menu details as below:
Menu Item Message text Copy status Comments
Save to USB Save the
configurations to
USB memory.
<blank>, Fail, or OK.
The field is blank until
the data has either
been written to the
USB (OK) or the
system determines it
cannot write to the
USB (Fail).
Saves all settings that are
not hardware dependent,
including facility defaults,
colors, units, O2 flow tube
position, decimal marker,
and altitude.
Load from
USB
Load the
configurations
from USB memory.
<blank>, Fail, or OK.
The field is blank until
the data has either
been read from the
USB (OK) or the
system determines it
cannot read the USB
or the USB does not
have the required
data (Fail).
Systems cannot accept configuration files from a different product model.
The software version is stored with the saved configuration. A system will
reject any configurations from other than the current version of software.
Selecting Save to USB overwrites any configuration on the USB.
Use FAT16/32 format USB for the Copy Configuration operation, other format
USB could be incompatible.
4.6.1 Configurable Checklist
The Configurable Checklist allows the user to configure 4 customized
checklist items. These customized checklist items come out automatically at
the end of the system full test checkout.
Follow below steps to configure the customized checklist:
Note
Note
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03 17 2076163-001 4-11
1. Enter Service Mode and copy configurations to an USB device.
2. Download the copied files to a PC.
3. Locate and open the file "CS600Checklist.txt".
4. Edit the customized checklist items as instructed.
Text length of each checklist item is limited to 30 characters.
Some special symbols (for example ^, $, %) are not recognizable and should
not be used in the checklist description.
--
5. Copy the edited file back to the USB device.
6. Copy the updated checklist back onto the system using the copy
configurations menu options.
Note
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4.7 Software/Hardware Information menu
Select SW and HW versions from the Service menu to access the software/
hardware information.
Turn the ComWheel (or use the touch points) to scroll through the list box.
Select "Close" to return to the Service menu.
This menu lists the following system information:
Note: In the following lists, X = Number, A, B, C = letter
Total Time (HH:MM): XX:XX
System Software Release: XX.XX
Model Code: X
Machine SN (Serial Number): ABCDXXXXXXXXX
Option Package: X
Options Code: XXXX
Anes SW Ver (Software Version): XX.XX
Anes HW Ver (Hardware Version): XXXX-XXXX-XXX REV A
Anes Board SN (Serial Number): ABCXXXXX
Display SW Ver (Software Version): XX.XX
Display Front Panel SW Ver (Software Version): XX.XX
Display BIOS Ver (Version): XX.XX
Display HW Ver (Hardware Version): MXXXXXXX-XXX
Display HW SN (Hardware Serial Number): ABCXXXXX
Display COMX Board HW Ver (Hardware Version): XXXXXXX-XXX
Display COMX Board SN (Serial Number): ABCXXXXX
FIB SW Ver (Software Version): XX.XX
FIB HW Ver (Hardware Serial Number): XXXX-XXXX-XXX REV A
Frame Interface Board SN: ABCXXXXX
SIB SW Ver: XX.XX
SIB HW Ver: MXXXXXXXX
Sensor Int. Board SN: XXXXX
Power SW Ver (Software Version): XX.XX
Power HW Ver (HardwareSerial Number): XXXXXXX-XXX XXXX
Power Board SN (Serial Number): ABCXXXXX
Airway Module Software Version: X.X
Airway Module Hardware Version: <module type>
Airway Module Hardware Serial Number: XXXXXXXX
The Airway Module information is only displayed when an Airway Module is
present.
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03 17 2076163-001 4-13
4.8 Service Logs
The Service logs menu is an organized listing of stored events.
Menu Item Message text and Functions description
All Recent The All Recent records logs of the newest entries.
Error Log The Error Log lists the last 200 errors logged since the last
log reset, starting with the most recent. The system stores
the last 1,000 errors logged since the last log reset.
Event Log The Event Log records the service history of the device. This
includes: service calibrations, entry into the service mode,
options enabled, and software installation. In the event of a
board replacement, it is understood that this log like all
others could be lost.
The Event Log lists the last 200 events logged starting with
the most recent. The Event Log stores the last 1000 events.
The Event Log cannot be reset.
Alarm Log The Alarm Log lists the last 200 medium and high priority
parameter alarms since the last log reset starting with the
most recent. The Alarm Log store the last 1000 entries.
Key Press Log Scroll through key press log.
Copy Logs Save HW/SW info and all logs to USB memory device.
The Copy Logs function copies Error, Event, and Alarm logs
along with the software/hardware configuration to a text file
on a USB memory device. The copying takes about one
minute.
Note: Use FAT16/32 format USB for Copy Logs, other format
USB could be incompatible.
Note: Do not remove the USB memory device until the
screen shows copy is complete.
Reset Logs Erase Error, Alarm, and Key press log entries.
Close Return to Service menu.
Each log shows at the top of the screen the total “Running Hours” and the
date when the logs were last reset.
Whenever logs are reset, “Reset Logs dd-MMM-yyy hh:mm:ss” is recorded in
the Event log.
Reset Logs clears all history logs from the system permanently,
make sure the logs can be removed before the Reset Logs
operation.
If the logs are saved to a memory device, the machine’s serial number is
saved along with the current contents of the logs and the date and time.
WARNING
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4.9 Calibrations
The User Calibrations menu is accessible from the System Setup menu,
Super-User menu and the Checkout menu.
For step-by-step calibration instructions, see "5.6 Ventilator calibrations".
Before calibration, you must verify that the Drive Gas and the Altitude
settings are set appropriately to match the current drive gas configuration
and machine location. This data will be used during calibration. Please verify
and correct if necessary (See "4.4.1 Configuration menu").
If you change any of these settings, you must restart the system.
The timers for the calibrations are set in the Super User menu.
Menu Item Message text Values
Drive Gas Change drive gas to match
machine configuration.
Air, O2
Altitude Change altitude used for gas
calculations.
- 400 to 3000 m (in 100-m
increments)
Menu Item Message text
User Calibrations Shows the normal user calibration menu.
Manifold P Span Calibrate manifold pressure transducer.
Inspiratory Flow Valve Calibrate inspiratory flow valve.
Bleed Resistor Calibrate bleed resister flow.
Paw Span/Paw and
ACGO Span*
Calibrate the airway pressure transducer.
Zero Gas Transducers Calibrate the gas supply transducers.
Mixer Flow Sensor Zero Calibrate the mixer flow sensor
Zero ACGO/Zero AGSS/
Zero ACGO and AGSS**
Zero ACGO/AGSS pressure transducers
Close Return to previous menu.
*When ACGO is equipped and enabled, Paw and ACGO Span replaces Paw
Span in the calibration items list.
**Zero ACGO/Zero AGSS/Zero ACGO and AGSS
• When ACGO is equipped and enabled, Zero ACGO presents in the
Calibrations main menu.
• When AGSS is equipped and enabled, Zero AGSS presents in the
Calibrations main menu.
• When both ACGO and AGSS are equipped and enabled, Zero ACGO
and AGSS presents in the Calibrations main menu.
• If neither of ACGO and AGSS is equipped, this area is blank.
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03 17 2076163-001 4-15
4.9.1 User Calibrations
User Calibration History is shown when you first enter the user Calibration
screen.
The instructions are displayed in the Language selected on the Configuration
screen. Follow the instructions for each step to set up and process the
calibration.
Calibration Item Instructions
Flow and Pressure
1. Remove the absorber canister.
2. Unlatch the breathing system and select Confirm.
3. Relatch the breathing system.
4. Replace the absorber canister.
Calibration Result:
Weekly O2 Cell
1. Remove the absorber canister.
2. Unlatch the breathing system and select Confirm.
3. Wait for the 21% O2 calibration to finish.
4. Relatch the breathing system.
5. Replace the absorber canister.
Calibration Result:
Monthly O2 Cell
1. Unlatch the breathing system.
2. Wait for the 21% O2 calibration to finish.
3. Relatch the breathing system.
4. Replace the absorber canister.
5. Connect the patient circuit and select Confirm.
6. Open the patient Y and select Confirm.
7. Set the Bag/Vent switch to Vent.
8. Make sure the O2 gas supply is open.
9. Wait for the 100% O2 calibration to finish.
10. Set the Bag/Vent switch to Bag.
Calibration Result:
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Calibration Item Instructions
Airway Gas
1. Wait for zeroing to complete.
2. Connect the calibration gas and open the regulator.
3. Wait for the values to activate.
4. Match the values with the calibration gas and Confirm.
Calibration Result:
Calibrations for Weekly O2 Cell, Monthly O2 Cell and Airway Gas are
available to process only if the O2 Cell or the Airway Gas module are
installed in the system.
If the Weekly O2 Cell Calibration is performed and completed, steps for
calibrating the 21% O2 will be skipped when performing the Monthly O2 Cell
calibration.
4.9.2 Manifold P Span
The Manifold P Span instructions appear when the focus is on Manifold P
Span menu item. Follow the screen instructions to perform the calibration.
See "5.6.1 Manifold P Span" for detailed calibration procedure.
AC
.2
4.
23
4
Note
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03 17 2076163-001 4-17
AC
.2
4.
23
5
4.9.3 Inspiratory Flow Valve
The Inspiratory Flow Valve calibration instructions appear when the focus is
on the Insp Flow Valve menu item. Follow the screen instructions to perform
the calibration.
AC
.2
4.
23
6
During calibration, a separate Inspiratory Flow Valve Status menu shows the
calibration status including counts and corresponding flow at each step. This
menu contains a table of 24 entries from the previous calibration. The table is
erased at the start of calibration. The table is updated in real time during the
calibration.
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AC
.2
4.
23
7
If the outcome of the calibration is Pass, the new calibration data is saved.
If the outcome of the calibration is Fail, the old calibration data is retained.
Calibration results are saved to the Event Log.
See "5.6.2 Inspiratory Flow Valve" for detailed calibration procedure.
4.9.4 Bleed Resistor
The Bleed Resistor calibration instructions appear when the focus is on the
Bleed Resistor menu item. Follow the screen instructions to perform the
calibration.
AC
.2
4.
23
8
The Bleed Resistor Data menu is displayed during calibration and shows the
pressure and corresponding flow. This menu contains a table of 17 entries
from a previous calibration. The table is erased at the start of the calibration.
The table is updated in real time during the calibration.
4 Installation and Service Menus
03 17 2076163-001 4-19
AC
.2
4.
23
9
The calibration fails if the flow required to reach 91 cmH2O is > 16 l/min.
If theoutcome of the calibration is Pass, the new calibration data is saved to
the Event log.
If the outcome is Fail, the old calibration data is retained.
Selecting Close before the calibration is done aborts the calibration in
progress and keep the old calibration constants.
See "5.6.3 Bleed Resistor" for more details.
4.9.5 Paw Span (or Paw and ACGO Span)
Paw Span
For machines without ACGO, Paw Span presents on the calibration menu.
The Airway Pressure Span calibration instructions appear when Paw Span is
selected on the menu. Follow the screen instructions to perform the
calibration.
AC
.2
4.
24
0
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AC
.2
4.
24
1
See "5.6.4 Paw Span" for more details on the calibration.
Paw and ACGO Span
For machines equipped with ACGO, Paw and ACGO Span is present instead
of Paw Span in the Calibrations menu.
The Paw and ACGO Span calibration instructions appear when the focus is
on Paw and ACGO Span menu item. Follow the screen instructions to
perform the calibration.
AC
.2
4.
24
2
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03 17 2076163-001 4-21
AC
.2
4.
24
3
See "5.6.5 Paw and ACGO Span" for more details on the calibration.
4.9.6 Zero Gas Transducers
The Zero Gas Transducers calibration instructions appear when the focus is
on the Zero Gas Transducers item in the Calibrations.
AC
.2
4.
24
4
Follow the screen instructions to perform this calibration.
A failed test is usually the result of a pipeline or cylinder still connected to the
system.
• If the outcome of the calibration is Pass, the new calibration data is
saved.
• If the outcome is Fail, the old calibration data is retained.
• The result of the calibration is saved to the Event Log.
Selecting Close before the calibration is done aborts the calibration in
progress and keep the old calibration constants.
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4.9.7 Mixer Flow Sensor Zero
The Mixer Flow Sensor Zero calibration instructions screen appear when
the focus is on the Mixer Flow Sensor Zero in the Calibrations main menu.
Follow the instructions to zero the mixer flow sensor. See "5.6.7 Mixer FLow
Sensor Zero" for the detailed calibration procedures.
AC
.2
4.
24
5
4.9.8 Zero ACGO (or Zero AGSS or Zero ACGO and AGSS)
For machines with (enabled) ACGO and without AGSS, Zero ACGO
presents on the Calibrations menu.
For machines with (enabled) AGSS and without ACGO, Zero AGSS presents
on the Calibrations menu.
For machines with (enabled) ACGO and AGSS, Zero ACGO and AGSS
presents on the Calibrations menu.
The calibration instructions appear when the calibration item Zero ACGO/
Zero AGSS/Zero ACGO and AGSS is selected on the menu.
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03 17 2076163-001 4-23
AC
.2
4.
42
2
Follow the screen instructions to perform this calibration. See "5.6.8 Zero
ACGO (or Zero AGSS or Zero ACGO and AGSS)" for the detailed calibration
procedures.
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4.10 Display Diagnostics
Select Display Diagnostics from the Service menu to access the Display
Diagnostics menu.
Select the Display Diagnostics menu item to start the tests, verify the display
functions as indicated.
Display Diagnostics Action when selected
Test LEDs All LEDs flash 5 times.
Test Speaker Speaker sounds for 2 seconds.
Test Battery Shut off the AC mains.
The results will appear after 2 minutes.
Battery 1 (right) = XX.XX VDC
Battery 2 (left) = XX.XX VDC
Battery Current = -X.XX A
Battery test PASSED/FAILED*
(* Fail if either battery voltage is <12.10 VDC.)
Restore AC mains power after the test.
Test Hard Keys Push each hard key and verify the speaker sounds.
Test LCD Push the ComWheel to cycle through the color screens.The
first press results in a “blank” screen.
Calibrate Touch ** You will exit this menu and targets appear on the
screen.Touch targets as directed. Upon completion you will
return.
Close Selecting Close returns to the Service screen.
**If the Touch calibration is completely misaligned to where you are not able
to access Service mode using the touch controls, you can use the
ComWheel to navigate to this Display Diagnostics screen with below steps.
• Restart the system.
• On the Checkout Menu, Start a Case and then directly End a Case.
• At this point you can use the ComWheel to access System Setup on the
right hand button bar.
Double tapping the screen in the Calibration Confirmation screen, restarts
the calibration.
Note
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03 17 2076163-001 4-25
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5 Calibration
Calibration
In this section
5.1 Primary regulators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.1.1 Test setup for primary regulators. . . . . . . . . . . . . . . . . . . .5-3
5.1.2 Testing primary regulators. . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.1.3 Adjusting primary regulators. . . . . . . . . . . . . . . . . . . . . . . 5-6
5.2 Secondary regulators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.2.1 Testing/Adjusting secondary regulators or balance
regulators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.3 Flow control needle valves calibration. . . . . . . . . . . . . . . . . . . 5-10
5.3.1 Flow control needle valves calibration setup. . . . . . . . . 5-10
5.3.2 O2 needle valve calibration (minimum flow). . . . . . . . . . 5-11
5.3.3 N2O needle valve calibration (minimum flow). . . . . . . . .5-14
5.3.4 Air needle valve calibration (minimum flow). . . . . . . . . . 5-18
5.4 Link system calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
5.5 Adjust drive gas regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-26
5.6 Ventilator calibrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
5.6.1 Manifold P Span. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
5.6.2 Inspiratory Flow Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
5.6.3 Bleed Resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
5.6.4 Paw Span. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-32
5.6.5 Paw and ACGO Span. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34
03 17 2076163-001 5-1
5.6.6 Zero Gas Transducers. . . . . . . . . . . . . . . . . . . . . . . . . . .5-35
5.6.7 Mixer Flow Sensor Zero. . . . . . . . . . . . . . . . . . . . . . . . . 5-35
5.6.8 Zero ACGO (or Zero AGSS or ACGO and AGSS). . . . . 5-36
After adjustments and calibration are completed, always perform the
checkout procedure. Refer to Section 3 of this manual.
Note
Carestation 620/650/650c (A1/A2)
5-2 2076163-001 03 17
5.1 Primary regulators
When testing/adjusting N2O regulators, nitrous oxide flows
through the system. Use a safe and approved procedure to
collect and remove it.
To test or calibrate the primary regulators, you must set the system to the
Service mode and use the PC based Service Application to control flow
through the regulator.
Follow the procedure in "5.1.1 Test setup for primary regulators" to gain
access to the regulators. Then, follow the procedure in "5.1.3 Adjusting
primary regulators", select the test that is appropriate for the regulator you
are testing.
5.1.1 Test setup for primary regulators
Wear safety glasses while test device is connected to the test
port.
Be careful not to plug the output of the primary regulator without
having a pressure relief valve in the output circuit.
1. Turn off the system.
2. Disconnect all pipeline supplies.
3. Bleed gas pressure from the machine.
4. Remove the upper rear panel.
5. If equipped, turn the auxiliary O2 flowmeter control fully clockwise (no
flow).
6. Install a full cylinder in the cylinder supply to be tested. It is essential that
the cylinder be within 10% of its full pressure.
7. Remove the plug (1) from the test port. Connect a pressure test device
capable of measuring724 kPa (105 psi) to the open port.
AC
.2
4.
24
7
1
WARNING
Note
WARNING
CAUTION
5 Calibration
03 17 2076163-001 5-3
5.1.2 Testing primary regulators
There are two variations of the test procedure for the primary regulators:
• Test A - For primary regulators that supply drive gas to the ventilator.
• Test B - For all gases not used to supply drive gas to the ventilator.
Test A
For primary regulators that supply drive gas to the ventilator (O2 or Air):
Under low flow conditions, the output pressure of a properly adjusted
regulator should fall within specifications listed in step 4.
Under high flow conditions, the output pressure should not drop below the
specifications listed in step 5.
1. Remove the bellows housing and the bellows assembly.
2. Slowly open the cylinder valve.
3. Turn on the system.
4. Low Flow Test: Set the fresh gas flow to 0.1 l/min (or minimum flow for
O2).
• Close the cylinder valve and allow the pressure to decay to 2068
kPa (300 psi) as indicated on the cylinder pressure display.
• Access the Gas Delivery Schematic interface of the Service
Application, at the time that the cylinder pressure reaches 2068 kPa
(300 psi), set all the mixer solenoid valves (Mixer Air Solenoid
Valve, Mixer N2O Solenoid Valve, O2 Latching Valve and O2
Bypass Solenoid Valve) to off.
• Within one minute, the test device reading must stabilize between:
(60) DIN: 372 - 400 kPa (54 - 58 psi)
(50) Pin Indexed: 310 - 341 kPa (45.0 - 49.5 psi)
If the test device pressure does not stabilize within one minute,
replace the cylinder supply.
If the test device stabilizes within one minute, but the readings are
not within specifications, readjust the regulator (Section 5.1.3).
5. High Flow Test:
• Slowly open the cylinder valve.
• Remove the breathing system from the machine.
• Turn on the system.
• Access the Ventilation Schematic of the Service Application.
• Set Gas Inlet Valve to On.
• Adjust the Insp Flow Valve counts until the inspiratory flow value on
the schematic reads approximately 65 l/min.
• While watching the test device, toggle the Gas Inlet Valve several
times (Off, On, Off):
The test device reading must be greater than:
Carestation 620/650/650c (A1/A2)
5-4 2076163-001 03 17
(60) DIN: 221 kPa (32 psi)
(50) Pin Indexed: 207 kPa (30 psi)
Repeat this step three times.
If the test device reading under “high flow” conditions is less than
specified, readjust the regulator per the procedure in Section 5.1.3;
however, set the regulated pressure higher by the difference you
noted in this step plus 7 kPa (1 psi). This adjusts the “low flow”
regulated output to the high side of the specification so that the
“high flow” regulated pressure can fall within the specification.
If the regulator subsequently fails the “low flow” specification (step
5) because the reading is too high, replace the cylinder supply.
6. Turn off the system.
7. Close the cylinder valve.
8. Bleed the system of all pressure.
9. Disconnect the test device and plug the test port (pull on the plug to
ensure it is locked in the fitting).
10. Replace the breathing system.
11. Replace the rear upper panel.
12. Perform the checkout procedure (Section 3).
Test B
For all gases not used to supply drive gas to the ventilator:
Under low flow conditions, the output pressure of a properly adjusted
regulator should fall within specifications listed in step 4.
Under high flow conditions, the output pressure should not drop below the
specifications listed in step 5.
1. If the cylinder supply being tested is N2O, connect a source of O2 and
set the O2 flow control to the minimum stop (pilot pressure for secondary
regulator).
2. Slowly open the cylinder valve for the regulator being tested.
3. Turn on the system.
4. Low Flow Test:
• Set the flow of the gas being tested to 0.1 l/min (or minimum flow for
O2).
• Close the cylinder valve and allow the pressure to decay to 2068
kPa (300 psi) as indicated on the cylinder pressure display.
• Access the Gas Delivery Schematic interface of the Service
Application, at the time that the cylinder pressure reaches 2068 kPa
(300 psi), set all the mixer solenoid valves (Mixer Air Solenoid
Valve, Mixer N2O Solenoid Valve, O2 Latching Valve and O2
Bypass Solenoid Valve) to off.
• Within one minute, the test device reading must stabilize between:
(60) DIN: 372- 400 kPa (54 - 58 psi)
(50) Pin Indexed: 310 - 341 kPa (45.0 - 49.5 psi)
5 Calibration
03 17 2076163-001 5-5
If the test device pressure does not stabilize within one minute,
replace the cylinder supply.
If the test device stabilizes within one minute, but the readings are
not within specifications, readjust the regulator (Section 5.1.3).
5. High Flow Test:
• Turn on the system.
• Access the Gas Delivery Schematic interface of the Service
Application.
• Open the cylinder valve for the regulator being tested.
• Set Total Flow of the tested gas to 10 l/min.
The test device reading must be greater than:
(60) DIN 221 kPa (32 psi)
(50) Pin Indexed 221 kPa (32 psi)
If the test device reading under “high flow” conditions is less than
specified, readjust the regulator per the procedure in Section 5.1.3;
however, set the regulated pressure higher by the difference you
noted in this step plus 7 kPa (1 psi). This adjusts the “low flow”
regulated output to the high side of the specification so that the
“high flow” regulated pressure can fall within the specification.
If the regulator subsequently fails the “low flow” specification (step
5) because the reading is too high, replace the cylinder supply.
6. Turn off the system.
7. Close the cylinder valve.
8. Bleed the system of all pressure.
9. Disconnect the test device and plug the test port (pull on the plug to
ensure it is locked in the fitting).
10. Replace the rear panel.
11. Perform the checkout procedure (Section 3).
5.1.3 Adjusting primary regulators
Cylinder supplies must have all primary regulators set to the same pressure
range: (50) Pin Indexed or (60) DIN. If a regulator is replaced, the
replacement regulator must be set (as required) to the same specification as
the one removed.
If the cylinder supply being adjusted is N2O, connect a source of O2 and set
the O2 flow control to the minimum stop (pilot pressure for secondary
regulator).
Install a full cylinder in the cylinder supply to be adjusted. It is essential that
the cylinder be within 10% of its full pressure.
Do not attempt to adjust without flow.
To adjust the primary regulators, follow the procedure in Section 5.1.1 to gain
access to the regulators.
Important
CAUTION
Carestation 620/650/650c (A1/A2)
5-6 2076163-001 03 17
1. Connect a pressure test device capable of measuring 724 Kpa (105 psi)
to the test port of the regulator to be tested. See "5.1.1 Test setup for
primary regulators" for details.
2. Turn on the system.
3. Slowly open the cylinder valve for the regulator being tested and
observe the pressure reading for the cylinder on the display.
4. Set and maintain the fresh gas flow of the gas being tested to 0.1 l/min
(or minimum flow for O2).
5. Close the cylinder valve and allow the pressure to decay to 2068 kPa
(300 psi) as indicated on the display.
6. When the cylinder pressure reaches 2068 kPa (300 psi), adjust the
regulator (1) output pressure to:
(60) DIN: 372 - 400 kPa (54 - 58 psi)
(50) Pin Indexed: 310 - 341 kPa (45.0 - 49.5 psi)
AC
.2
4.
24
6
1
It may be necessary to open the cylinder valve and repeat steps 4 and 5 a
number of times to achieve the above setting.
--
7. Test the regulator settings per the appropriate procedure in "5.1.2
Testing primary regulators":
• Test A: For primary regulators that supply drive gas to the ventilator.
• Test B: For all gases not used to supply drive gas to the ventilator.
Note
5 Calibration
03 17 2076163-001 5-7
5.2 Secondary regulators
When testing N2O regulators, nitrous oxide flows through the
system. Use a safe and approved procedure to collect and
remove it.
5.2.1 Testing/Adjusting secondary regulators or balance
regulators1. Set the sytem to Standby.
2. Remove the top shelf cover.
3. Remove the rear upper panel.
4. Remove the plug from the test port (1) and connect a test device
capable of measuring 689 kPa (100 psi) using 1/8-inch nylon tubing.
1
AC
.2
4.
13
9
Test one port at a time, only remove the plug from the port to be tested.
--
5. Set the flow of the tested gas and of O2 as detailed in below chart.
6. Verify that the output of the tested regulator is within the range listed in
the chart.
Regulator Output Specification Flow Flow
Regulated gas O2
O2 207 ±7 kPa (30 ±1 psi) 2 l/min ---------
N2O (O2 reading -27.5) kPa ~ (O2 reading
-3.45) kPa
2 l/min 2 l/min
When adjusting the N2O regulator, first verify that the output of the O2
regulator is at 207 ±7 kPa (30 ±1 psi), then caculate the N2O output range
using the O2 output.
--
7. If required, adjust the O2 or N2O regulator to meet the above
specifications.
WARNING
Note
Note
Carestation 620/650/650c (A1/A2)
5-8 2076163-001 03 17
AC
.2
4.
39
9
2
3
The adjustment screw for the O2 regulator is self-locking. The adjustment
screw access (2) is located at the bottom of the O2 regulator. Use an M4
HEX socket screwdriver for the O2 regulator adjustment.
The adjustment screw (3) for the N2O regulator is located at the top of the
N2O regulator. Use a flathead screwdriver for the N2O regulator adjustment.
--
8. Disconnect the test device and plug the test port (pull on the plug to
ensure it is locked in the fitting).
9. Perform the Gas Controls test. See "3.4.3 Gas Controls test".
Note
5 Calibration
03 17 2076163-001 5-9
5.3 Flow control needle valves calibration
You need to calibrate a needle valve:
• if you install a new one,
• if minimum and maximum flows are not within specifications.
Perform the Mixer Flow Sensor Zero calibration procedure ( see "4.9.7 Mixer
Flow Sensor Zero") before the flow control needle valves calibration.
All illustrations in this section show ANSI flowmeter module positions. The
order is reversed on ISO machines.
5.3.1 Flow control needle valves calibration setup
This section introduces a method for blocking up the flowhead assembly for
the needle valves calibration as reference.
1. Turn off the system.
2. Make sure all gas control valves are totally closed.
3. Remove the top panel.
4. Remove the two 5 mm Hex screws that secure the flowhead assembly
to the top pan.
5. Remove the clamp that holds the O2 control valve lens, then remove the
lens.
6. Disconnect the tubing connected to the "R-OUT" port and the "R-IN" port
of the flowhead assembly.
7. Remove the flowhead assembly from the top pan carefully.
Note: Make sure the knobs do not damage the Center vaporizer task
board and the LED wires when remove the flowhead assembly.
8. Install two spacers onto the top pan.
AC
.2
4.
41
6-
1
9. Mount the flowhead assembly onto the two spacers, then secure the
flowhead assembly with two 5mm Hex screws.
Note
Note
Carestation 620/650/650c (A1/A2)
5-10 2076163-001 03 17
AC
.2
4.
41
6-
2
10. Connect the tubing disconnected at step 6.
5.3.2 O2 needle valve calibration (minimum flow)
Do not force the needle valve against the seat. Overtightening
the valve can cause the minimum flow setting to drift out of
specifications.
1. Turn off the system.
2. Disconnect all pipeline supplies and close all cylinder valves.
3. Remove the top panel.
4. Remove flowhead assembly:
• Remove the two hex mounting screws (circled) that hold the
flowhead assembly to the top pan. (Note: Screw locations could
vary on different flowhead configurations.)
AC
.2
4.
41
3
• Remove the clamp that holds the O2 control valve lens, then
remove the O2 control valve lens (circled).
CAUTION
5 Calibration
03 17 2076163-001 5-11
AC
.2
4.
41
4
• Remove the flowhead assembly out and block it up with proper tools
(refer to "5.3.1 Flow control needle valves calibration setup" (10)),
make sure the knobs, needle valves and fittings are clear of the top
pan enclosure, and no tubing is kinked.
Note: If adjusting an existing needle valve, remove the N2O and O2
knob and sprocket assemblies, and loosen the O2 stop collar setscrews.
5. Slide the stop collar (1) onto the valve stem (3) with the stop tab (2)
toward the valve. Do not tighten the setscrews.
1
3
2
AC.24.063a
6. Connect the O2 pipeline supply or open the O2 cylinder valve.
7. Turn on the system.
8. Start PC Service Application.
9. Access the Mixer Output/Gas Delivery Status interface from the Gas
Delivery Subsystem main menu.
10. Attach the O2 knob and adjust the O2 needle valve till the O2 flow value
in the Gas Delivery Status screen reaches 75 ±50 ml/min.
11. Push the stop collar against the valve body.
AC
.2
4.
63
b
12. Turn the collar (5) clockwise until the collar stop (4) tab contacts the
minimum stop tab on the valve body. Do not turn the valve stem.
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5-12 2076163-001 03 17
5 
4
6
AC
.2
4.
06
3c
Note: The collar stop must be on CCW side of the valve stop (6).
13. Carefully pull the collar back so there is a slight gap (as shown below)
between collar and the valve body (but still engages the valve stop).
AC
.2
4.
41
5
14. Tighten the collar setscrews. Start with the one opposite the tab if
possible.
15. Turn the valve stem counterclockwise at least one revolution to make
sure the collar tab clears the valve stop.
AC.24.063e
If the stop does not clear:
• Turn the valve stem back to minimum position.
• Loosen the collar setscrews.
• Repeat steps 11 through 15.
16. Turn the valve stem clockwise to the minimum stop.
17. Verify that the O2 flow value in the Gas Delivery Status screen is within
75 ±50 ml/min.
18. Calibrate the Link proportioning system. See "5.4 Link system
calibration".
5 Calibration
03 17 2076163-001 5-13
5.3.3 N2O needle valve calibration (minimum flow)
You must be in a well ventilated room or use a gas evacuation
device at this time. Anesthetic vapors exhausted into the room
air can be harmful to your health.
1. Turn off the system.
2. Disconnect all pipeline supplies and close all cylinder valves.
3. Remove the top panel.
4. Remove flowhead assembly:
• Remove the two hex mounting screws (circled) that hold the
flowhead assembly to the top pan. (Note: Screw locations could
vary on different flowhead configurations.)
AC
.2
4.
41
3
• Remove the clamp that holds the O2 control valve lens, then
remove the O2 control valve lens (circled).
AC
.2
4.
41
4
• Remove the flowhead assembly out and block it up with proper tools
(refer to "5.3.1 Flow control needle valves calibration setup" (10)),
make sure the knobs, needle valves and fittings are clear of the top
pan enclosure, and no tubing is kinked.
Note: If adjusting an existing needle valve, remove the N2O and O2
knob and sprocket assemblies, and loosen the N2O stop collar
setscrews.
5. Calibration setup:
WARNING
Carestation 620/650/650c (A1/A2)
5-14 2076163-001 03 17
• Disconnect the 6mm tube (T1) from the O2 IN port and occlude the
O2 IN port with a plug (P1) (Part Number:1006-3531-000).
AC
.2
4.
41
6
T1
P1
• Disconnect the 6mm tube (T2) from the R-OUT port on the mixer
O2 module.
AC
.2
4.
41
7
T2
• Disconnect the 1/8 inch tube (T3) from the pilot port on the mixer O2
module and occlude the pilot port with a 1/8 inch plug (P2) (Part
Number: 1006-3611-000).
AC
.2
4.
41
8
T3
P2
• Connect the 1/8 inch tube (T3) in line with the R-OUT port on the
mixer O2 module with a 6 mm tube (T4) (Part Number:
1001-3062-000) and an adapter connector (A1) (Part Number:
1006-3711-000).
5 Calibration
03 17 2076163-001 5-15
AC
.2
4.
41
9
T3
A1
T4
This setup supplies the pilot pressure to the balance regulator during the
N2O needle valve calibration.
6. Slide the stop collar (1) onto the valve stem (3) with the stop tab (2)
toward the valve. Do not tighten setscrews.
1
3
2
AC.24.063a
7. Connect the O2 and N2O gas supply.
8. Slowly open the O2 and N2O gas supply valve.
9. Turn on the system.
10. StartPC Service Application.
11. Access the Mixer Output/Gas Delivery Status interface from the Gas
Delivery Subsystem main menu.
12. Slowly adjust the N2O needle valve till the N2O flow value in the Gas
Delivery Status screen reaches around 0.1 l/min.
Do not force the needle valve against the seat. Overtightening
the valve can cause the minimum flow setting to drift out of
specifications or damage the needle valve.
--
13. Disconnect the tubing (T5) from the mixer outlet port, then connect a 1/4
inch tube to the mixer outlet.
AC
.2
4.
42
0
T5
14. If the machine has an Air option, bleed down the air supply. Air can
inflate the bubble (next step) if it is not shut off.
CAUTION
Carestation 620/650/650c (A1/A2)
5-16 2076163-001 03 17
15. Apply a small amount of leak detection fluid (Snoop) to the end of the
tube to form a bubble.
16. Turn the valve stem clockwise until the bubble no longer inflates.
Do not force the needle valve against the seat. Overtightening
the valve can cause the minimum flow setting to drift out of
specifications or damage the needle valve.
--
17. Push the stop collar against the valve body.
AC
.2
4.
63
b
18. Turn the collar (5) clockwise until the collar stop (4) tab contacts the
minimum stop tab on the valve body. Do not turn the valve stem.
5 
4
6
AC
.2
4.
06
3c
Note: Collar stop must be on CCW side of valve stop (6).
19. Carefully pull the collar back so there is a slight gap between collar and
the valve body (but still engages the valve stop).
AC
.2
4.
41
5
20. Tighten the collar setscrews. Start with the one opposite the tab if
possible.
21. Turn the valve stem counterclockwise at least one revolution to make
sure the collar tab clears the valve stop.
CAUTION
5 Calibration
03 17 2076163-001 5-17
AC.24.063e
If the stop does not clear:
• Turn the valve stem back to minimum position.
• Loosen the collar setscrews.
• Repeat steps 17 through 21.
22. Turn the valve stem clockwise to the minimum stop.
23. Verify there is no flow at the end of the tube.
24. Turn off the gas supply.
25. Remove the calibration setup and reconnect the tubing.
26. Calibrate the Link proportioning system. See "5.4 Link system
calibration".
5.3.4 Air needle valve calibration (minimum flow)
1. Turn off the system.
2. Disconnect all pipeline supplies and close all cylinder valves except for
air.
3. Remove the top panel.
4. Remove the two hex mounting screws that hold the flowhead assembly,
remove the O2 control valve lens, then move the flowhead assembly out
of the top enclosure (See "5.3.3 N2O needle valve calibration (minimum
flow)" for more details).
Note: If adjusting an existing needle valve, loosen the Air stop collar
setscrews.
5. Slide the stop collar (1) onto the valve stem (3) with the stop tab (2)
toward the valve. Do not tighten setscrews.
1
3
2
AC.24.063a
6. Connect the Air pipeline supply or turn on the Air cylinder valve.
7. Turn on the system.
8. Start PC Service Application.
Carestation 620/650/650c (A1/A2)
5-18 2076163-001 03 17
9. Access the Mixer Output/Gas Delivery Status interface from the Gas
Delivery Subsystem main menu.
10. Adjust the Air needle valve till the Air flow value in the Gas Delivery
Status screen reaches around 0.1 l/min.
Do not force the needle valve against the seat. Overtightening
the valve can cause the minimum flow setting to drift out of
specifications or damage the needle valve.
--
11. Disconnect the tubing (T5) from the mixer outlet port, then connect a 1/4
inch tube to the mixer outlet.
AC
.2
4.
42
0
T5
12. Apply a small amount of leak detection fluid (Snoop) to the end of the
tube to form a bubble.
13. Turn the valve stem clockwise until the bubble no longer inflates.
Do not force the needle valve against the seat. Overtightening
the valve can cause the minimum flow setting to drift out of
specifications or damage the needle valve.
--
14. Push the stop collar against the valve body.
AC
.2
4.
63
b
15. Turn the collar (5) clockwise until the collar stop (4) tab contacts the
minimum stop tab on the valve body. Do not turn the valve stem.
5 
4
6
AC
.2
4.
06
3c
Note: Collar stop must be on CCW side of valve stop (6).
16. Carefully pull the collar back so there is a slight gap between collar and
the valve body (but still engages the valve stop).
CAUTION
CAUTION
5 Calibration
03 17 2076163-001 5-19
AC
.2
4.
41
5
17. Tighten the collar setscrews. Start with the one opposite the tab if
possible.
18. Turn the valve stem counterclockwise at least one revolution to make
sure the collar tab clears the valve stop.
AC.24.063e
If the stop does not clear:
• Turn the valve stem back to minimum position.
• Loosen the collar setscrews.
• Repeat steps 14 through 18.
19. Turn the valve stem clockwise to the minimum stop.
20. Verify there is no flow at the end of the tube.
21. Turn the needle valve counterclockwise slowly and verify that the flow
value increases gradually. Sharp increasing of the flow means the
needle valve is not correctly calibrated at the minimum flow and you
need to redo above calibration procedure.
22. Set the knob so that at minimum flow the label text is horizontal and the
knob is on an even plane (front to back) with the N2O and O2 knobs.
23. Reconnect the tubing and reassemble the system.
Carestation 620/650/650c (A1/A2)
5-20 2076163-001 03 17
5.4 Link system calibration
Before you start, make sure that:
• All parts are correctly installed.
• Stops on needle valves are set correctly.
• The machine meets leak check requirements.
• Confirm that the O2 sensor measures 21% in room air and 100% in pure
O2. If not, calibrate the O2 sensor.
All illustrations in this section show ANSI flowmeter module positions. The
order is reversed on ISO machines.
You must be in a well ventilated room or use a gas evacuation
device at this time. Anesthetic vapors exhausted into the room
air can be harmful to your health.
1. Make sure the system is turned off.
2. Remove the top panel.
3. Put the plastic spacer on the N2O needle valve spindle.
4. Turn the O2 and the N2O needle valves clockwise to their minimum stop
position.
5. Put the chain onto the O2 knob/sprocket assembly and the N2O
sprocket.
Note: The N2O sprocket set screws should be away from the valve.
AC
.2
4.
06
5
6. Install the chain and sprockets onto the needle valve stems as an
assembly. Press the O2 knob/sprocket against the O2 minimum stop
collar.
Note
WARNING
5 Calibration
03 17 2076163-001 5-21
AC.24.066
7. Tighten the setscrews in the O2 knob. Do not tighten the N2O sprocket
setscrews.
Note: If O2 label is on the knob, turn the knob so that the identification
label is horizontal before tightening the setscrews.
8. Turn on the O2 and the N2O gas supplies (pipeline or cylinder).
9. Turn on the system.
10. Start PC Service Application.
11. Access the Mixer Output/Gas Delivery Status interface from the Gas
Delivery Subsystem main menu.
12. Slowly adjust the O2 and N2O needle valves till the flows in the Gas
Delivery Status screen reach the values shown below:
• O2 : 200 ±10 ml/min.
• N2O : 600 ±30 ml/min.
13. Turn the sprocket on the O2 knob sprocket assembly counterclockwise
until it stops against the tab on the O2 knob. Do not allow the N2O or O2
valve stems to rotate.
AC
.2
4.
06
7
14. Push the N2O sprocket against the plastic spacer.
Carestation 620/650/650c (A1/A2)
5-22 2076163-001 03 17
AC
.2
4.
06
8
15. Holding the O2 knob, rotate the N2O sprocket counterclockwise till all
slack is removed from the chain.
16. Lightly tighten both N2O sprocket setscrews.
17. Turn the N2O needle valve clockwise to the minimum stop position.
18. Install the N2O knob. Turn the knob so that the identification label is
horizontal before tightening the setscrews.
AC
.2
4.
06
9
19. Turn the N2O needle valve counterclockwise, and check that the oxygen
flow increases as N2O flow increases.
20. Turn the O2 needle valve clockwise, and check that the N2O flow
decreases as O2 decreases.21. Check the proportioning system concentration (increasing N2O flow).
Observe the following precautions:
• Start with both valves at the minimum setting.
• Adjust only the N2O needle valve.
• Increase the N2O flow as specified in the table below, make sure
the O2 concentration or the O2 flow is within the allowed range.
For machines with O2 monitoring, the O2 concentration can be
observed on the display in normal operation mode. For machines
without O2 monitoring, access the Gas Delivery Status interface in PC
Service Application and check the O2 flow.
Note
5 Calibration
03 17 2076163-001 5-23
--
Allow the O2 monitor to stabilize. At the lower flows, the O2 monitor may
take up to 90 seconds to stabilize.
--
• Ensure that the patient port (Insp) is not blocked; O2 must flow past
the O2 sensor to complete the calibration.
• If you overshoot a setting, turn the O2 needle valve clockwise until
the N2O flow decreases to the previous setting before continuing
the test.
Set the N2O flow (l/min) O2 concentration O2 flow (l/min)
0.8 22% min > 0.22
1 22% min > 0.28
2 22% to 33% 0.56 to 0.99
6 22% to 33% 1.69 to 2.96
9 22% to 33% 2.53 to 4.44
22. Check the proportioning system concentration (decreasing O2 flow).
Observe the following precautions:
• Turn the N2O needle valve to the maximum setting.
• Adjust only the O2 needle valve.
• Decrease the O2 flow as specified in the table and make sure the
O2 concentration or the N2O low is within the allowed range.
For machines with O2 monitoring, the O2 concentration can be
observed on the display in normal operation mode. For machines
without O2 monitoring, access the Gas Delivery Status interface in PC
Service Application and check the N2O flow.
--
Allow the O2 monitor to stabilize. At the lower flows, the O2 monitor may
take up to 90 seconds to stabilize.
--
• If you overshoot a setting, turn the N2O needle valve
counterclockwise until the O2 flow increases to the previous setting
before continuing the test.
Set the O2 flow (l/min) O2 concentration N2O flow (l/min)
3 22% to 33% 6.09 to 10.64
2 22% to 33% 4.06 to 7.09
1 22% to 33% 2.03 to 3.55
0.3 > 22% < 1.06
If both tests meet the criteria, calibration is complete (go to the next
step). If either test fails to meet the criteria, return to step 14 and
adjust N2O to a lower or higher setting.
Note
Note
Note
Carestation 620/650/650c (A1/A2)
5-24 2076163-001 03 17
If: Then:
Concentration Low Decrease N2O
Concentration High Increase N2O
Adjusting the regulator pressure is not recommended. It has little effect
on proportioning. If you have difficulty proportioning the system, you
may need to replace either or both needle valves.
--
23. Tighten N2O sprocket setscrews.
24. Turn off the system.
25. Turn off the O2 and the N2O gas supplies.
26. Check that all setscrews are tight.
27. Adjust all needle valves to minimum stop position.
28. Install the top panel.
Note
5 Calibration
03 17 2076163-001 5-25
5.5 Adjust drive gas regulator
The drive gas regulator must be adjusted while maintaining a flow of 15 l/min.
To adjust the flow, you must set the system to the Service mode and use the
PC based Service Application to control flow through the regulator.
The drive gas regulator should provide a constant gas input pressure of 172
kPa (25 psi).
1. Remove the tabletop.
2. Attach a pressure test device (pressure gauge or a digital manometer) to
the regulator pressure port:
• Remove the 6.35-mm (1/4 inch) plug (1) on the vent engine.
• Attach the test device to the open port.
1
AC.24.199
3. Remove the breathing system from the machine to allow continuous
Insp Valve flow through the exhalation valve.
4. Access the Ventilation Schematic of the Service Application.
5. Set Gas Inlet Valve to On.
6. Adjust the Insp Flow Valve counts until the inspiratory flow value on the
schematic reads approximately 15 l/min.
7. If required, adjust the regulator to 172 ±1.72 kPa (25 ±0.25 psi).
8. Remove the pressure test device from the open port.
9. Plug the open port.
10. Replace the tabletop.
Carestation 620/650/650c (A1/A2)
5-26 2076163-001 03 17
5.6 Ventilator calibrations
The Service menu structure is detailed in Section 4. To access the Ventilator
Calibrations menu:
1. Turn on the system.
2. Navigate the menu selections to the Calibration menu.
• Select System Setup from the Main Screen.
• On the System Setup menu, select Super User Password (16 - 4 -
34).
• On the Super User menu, select Installation and Service (26 - 23 -
8).
• Select Calibrations.
The password use is limited to trained and qualified users. Do
not share the Super User or Service passwords with others.
Do not leave the machine unattended in Super User or Service
mode. Exit Super User or Service modes after task completion.
Before calibration, you must verify that the Drive Gas and the Altitude
settings are set appropriately to match the current drive gas configuration
and machine location.
Unless otherwise specified, perform the ventilator calibrations in the following
order:
• User Calibration
• Manifold P Span
• Inspiratory Flow Valve
• Bleed Resistor
• Zero ACGO/ Zero ACGO and AGSS (if ACGO or/and AGSS present)
• Paw Span/Paw and ACGO Span (if ACGO presents)
The following calibrations should be performed as required:
• Zero Gas Transducers:
• The pipeline and cylinder pressure transducer should be “zeroed” at
least once a year.
• Whenever a pipeline or cylinder pressure transducer is replaced.
• Mixer Flow Sensor Zero
• The fresh gas flow sensors should be “zeroed” at least once a year.
• Whenever a fresh gas flow sensor is replaced.
• Zero AGSS (or Zero ACGO and AGSS)
• The AGSS flow transducer should be “zeroed” at least once a year.
WARNING
Note
5 Calibration
03 17 2076163-001 5-27
• Whenever the Anesthesia Computer Board (ACB) is replaced, as
the AGSS transducer is located on the ACB.
In case an individual ventilator calibration need to be performed during
troubleshooting, the required prerequisties must be met for certain calibration
to get an accurate outcome. For example, in order to obtain an accruate
result on Manifold P Span calibration, Flow and Pressure calibration in User
Calibration should be performed prior to the Manifold P Span calibration. The
table below shows the prerequisites for each individual ventilator calibration.
Calibration Procedure Prerequisite
User Calibrations None
Manifold P Span - Flow and Pressure
Inspiratory Flow Valve - Flow and Pressure
Bleed Resistor - Flow and Pressure
- Manifold P Span
Paw Span
* for machine not equipped with ACGO
- Flow and Pressure
Paw and ACGO Span
* for machine equipped with ACGO
- Flow and Pressure
- Zero ACGO (or Zero AGSS and
ACGO)
Zero Gas Transducers None
Mixer Flow Sensor Zero None
Zero AGSS / Zero ACGO / Zero ACGO and
AGSS
None
5.6.1 Manifold P Span
Calibration setup
1. Make sure the Flow and Pressure calibration is completed before this
calibration.
2. Remove the tabletop.
3. Disconnect the manifold pressure sensing tube (1) from the ACB.
Note
Carestation 620/650/650c (A1/A2)
5-28 2076163-001 03 17
1
AC
.2
4.
20
2
4. Connect the manifold pressure tee adapter (2) to the manifold pressure
transducer tubing (white inline connector). See "10.1.3 Manifold
pressure test adapter".
2 3
AC
.2
4.
20
6
5. Connect a pressure test device (pressure gauge or a digital manometer -
See "10.1.2 Test devices") to the open port (3) of the tee adapter.
6. Set the Bag/Vent switch to Vent position.
Calibration procedure
1. On the Calibrations menu, select Manifold P Span.
2. Select Manifold P Span.
3. Adjust the Inspiratory Flow Valve Setting (DAC) until the manometer
reading equals 75 cmH2O:
• start at approximately 1600 counts (press the ComWheel to
activate).
• continue to increase the count until the manometer reading equals
75 cmH2O.
4. Select Save Calibration.
5 Calibration
03 17 2076163-001 5-29
5. Select Back to return to the Calibrations menu.
6. Disconnect the manometer from the tee adapter.7. Remove the tee adapter and reconnect the manifold pressure
transducer tubing.
Troubleshooting - Manifold P Span Calibration Failure
The calibration will fail if the:
• ADC value calculated for span is outside the range of 6420-7620 counts.
Possible causes for calibration failure:
• Occlusion or moisture in tubing to pressure transducer on the ACB.
• Pressure transducer outside of range limits - Check Service Application
for A/D value.
• Drive gas flow sensor fails.
• Breathing circuit flow sensor fails.
5.6.2 Inspiratory Flow Valve
Calibration setup
1. Make sure the Flow and Pressure calibration is completed.
2. Remove the tabletop.
3. Make sure the Manifold pressure tube (2) is connected to the ACB
pressure sensing connector.
AC
.2
4.
20
7
4. Remove the bellows housing and the bellows (3).
5. Reinstall the bellows housing (4).
6. Disconnect the patient circuit.
7. Make sure the Bag/Vent switch is set to Vent.
Calibration procedure
1. On the Calibrations menu, select Inspiratory Flow Valve.
2. Select Start to start the calibration.
(May take several minutes before you see any effects of the test on the
screen.)
Carestation 620/650/650c (A1/A2)
5-30 2076163-001 03 17
3. The calibration status screen shows the counts and corresponding flow
at each step. Select Scroll to check through the data as necessary.
4. When the calibration is completed, select Back to return to the
Calibrations menu.
Troubleshooting
The Calibration will fail if the:
• Previously found DAC value is ≥ to the current DAC value while finding
points 2 through 24.
• Previously recorded flow for a previous DAC is > the previous flow for a
previous DAC.
• Points 2, 3, and 4 have the same value stored for flow (this would cause
a divide by zero when extrapolating).
• If Flow valve DAC is set to the value in point 20, drive gas flow value
exceeds the sum of bleed flow + inspiratory BC flow ± 20%.
• End point does not give a flow > 100 l/min.
Possible causes and troubleshooting for calibration failure:
• Check Altitude and Drive Gas selection.
• Leaks in Vent Engine Interface Manifold - Inspect for leaks.
• Inspiratory Flow Valve not closing completely (leaky) - Replace the
Inspiratory Flow Valve.
• Drive gas regulator not adjusted / stable - Check regulator calibration.
• Inspiratory Flow Valve not linear - Replace Inspiratory Flow Valve.
• Inadequate drive gas supply (cannot deliver > 100 l/min).
• Drive gas flow sensor failed.
• Breathing circuit flow sensor disconnected or failed.
5.6.3 Bleed Resistor
Calibration setup
1. Make sure the Flow and Pressure and the Manifold P Span
calibrations are completed before this calibration.
2. Remove the bellows housing, the bellows and the rim (2).
AC
.2
4.
20
8
5 Calibration
03 17 2076163-001 5-31
3. Plug the drive gas port (3).
Calibration procedure
1. On the Calibrations menu, select Bleed Resistor.
2. Select Start.
3. When the calibration is completed, the Pressure values and Flow values
will display in the status form.
4. Select Back to return to the Calibrations menu.
Bleed Resistor Calibration Failures
The calibration will fail if the:
• Flow is greater than 50 l/min before 105 cmH2O of pressure is reached.
• Table created has a pressure or flow that is greater than or equal to the
next flow or pressure point in the table.
Possible causes and troubleshooting for calibration failure:
• Check Altitude and Drive Gas selection.
• Leaks around the test plugs or MOPV.
• Orifice blocked - clean the orifice.
• Drive gas flow sensor fails - replace the drive gas flow sensor.
• Drive gas regulator not adjusted / stable - Check regulator calibration.
• Inspiratory Flow Valve Calibration not complete - Perform Calibration.
• Inspiratory Flow Valve not closing completely (leaky) - Replace
Inspiratory Flow Valve.
• Inspiratory Flow Valve not linear - Replace Inspiratory Flow Valve.
5.6.4 Paw Span
Calibration setup
1. Make sure the Flow and Pressure calibration is completed before this
calibration.
2. Remove the bellows and install the bellows housing back. (Note: make
sure the drive gas port is unplugged if it was changed in the previous
calibration).
3. Connect a pressure tee (3) to the inspiratory port.
Carestation 620/650/650c (A1/A2)
5-32 2076163-001 03 17
AC
.2
4.
20
9
4. Connect the pressure tee (1504-3011-000) and the expiratory port with a
tube (4). See "10.1.7 Test tools" for details about the pressure tee.
5. Connect a pressure test device (pressure gauge or a digital manometer)
to the pressure tee (5). See "10.1.2 Test devices" for details on the test
device.
Calibration procedure
1. On the Calibrations menu, select Paw Span.
2. Select Start Paw Span.
3. Adjust the Inspiratory Flow Valve Setting (DAC Counts) until the
manometer reading equals 75 cmH2O:
• start at approximately 1600 counts (press the ComWheel to
activate).
• continue to increase the count until the manometer reading equals
75 cmH2O.
4. Select Save Calibration.
5. Select Back to return to the calibrations main menu.
Troubleshooting
The calibration will fail if:
• the ADC value calculated for Paw Span is outside the range of
1605-1905 counts.
Possible causes and troubleshooting for calibration failure:
• Occlusion or moisture in tubing to the transducers.
• Leakage in breathing circuit.
• Pressure transducer outside of range limits - Check Service Application
for A/D value.
5 Calibration
03 17 2076163-001 5-33
5.6.5 Paw and ACGO Span
For machines with ACGO, Paw and ACGO are calibrated together via Paw
and ACGO Span calibration.
The ACGO must be zeroed before performing this calibration. See "5.6.8
Zero ACGO and AGSS".
Calibration setup
1. Make sure the Flow and Pressure, Zero ACGO (or ) calibrations are
completed before this calibration.
2. Remove the bellows but keep the bellows housing (2) installed, make
sure the drive gas port is unplugged (if it was changed in the previous
calibration).
AC
.2
4.
21
0
3. Connect a pressure tee to the ACGO port (3).
4. Connect the pressure tee (1504-3011-000) and inspiratory port with a
tube (4). See "10.1.7 Test tools" for more details on the pressure tee.
5. Connect a pressure test device (pressure gauge or a digital manometer)
to the pressure tee (5). See "10.1.2 Test devices" for more details on the
test device.
6. Set the ACGO switch to Circle position (6).
7. Set the Bag/Vent Switch to Vent.
Calibration procedure
1. On the menu, select PAW+ACGO Span.
2. Select Start Paw and ACGO Span.
3. Adjust the Inspiratory Flow Valve Setting (DAC) until the manometer
reads above 75 cmH2O but no more than 76 cmH2O:
• start at approximately 1600 counts (press the ComWheel to
activate).
• continue to increase the count until the manometer reading reaches
the range (75 cmH2O < reading < 76 cmH2O).
4. Select Save Calibration.
Note
Carestation 620/650/650c (A1/A2)
5-34 2076163-001 03 17
5. Select Back to return to the calibrations main menu.
Troubleshooting
The calibration will fail if:
• the ADC value calculated for Paw Span is outside the range of
1605-1905 counts.
• and/or the ADC value calculated for ACGO Span is outside the range of
6420-7620 counts.
Possible causes for calibration failure:
• Occlusion or moisture in tubing to the transducers (Paw transducer on
the SIB and ACGO transducer on the FIB).
• Pressure transducer outside of range limits - Check Service Application
for Paw Span A/D value.
5.6.6 Zero Gas Transducers
1. Remove all cylinders if present.
2. Disconnect all pipeline supplies.
3. Select Start Transducer Zero from the Zero Gas Transducers
calibration interface.
Tester need check whether tested items match transducers installed. If an
installed transducer is not connected, system will not test it and the test
passes.
--
Troubleshooting
Possible causes and troubleshooting for calibration failure:
• Transducer is not correctly connected - check connection.
• Transducer failed - replace the transducer.
5.6.7 Mixer Flow Sensor Zero
1. Remove all cylindersif present.
2. Disconnect all pipeline supplies.
3. Select Start Zero Flow Sensor from the Mixer Flow Sensor Zero
calibration menu interface.
Troubleshooting
Possible causes and troubleshooting for calibration failure:
Note
5 Calibration
03 17 2076163-001 5-35
• Installed mixer flow sensor(s) not correctly set in software - check the
settings in software.
• Flow sensor failed - replace flow sensor.
5.6.8 Zero ACGO (or Zero AGSS or ACGO and AGSS)
Only perform this calibration on machines equipped with ACGO and/or
AGSS.
1. If ACGO is installed: Set the ACGO switch to circle circuit. Disconnect
any connected tube from the ACGO port (1).
AC
.2
4.
23
1
2. If AGSS is installed: Disconnect or turn off AGSS disposal (2).
3. Select Zero ACGO or Zero AGSS or Zero ACGO and AGSS from the
Calibrations menu.
If only equipped with ACGO, calibration menu shows Zero ACGO.
If only equipped with Active AGSS, calibration menu shows Zero AGSS.
If both ACGO and Active AGSS are equipped, calibration menu shows Zero
ACGO and AGSS.
--
4. Select Start to start the calibration.
Troubleshooting
Possible causes and troubleshooting for calibration failure:
• ACGO transducer on the FIB failed - replace the FIB.
• AGSS transducer on the ACB failed - replace the ACB.
• Transducer tubing kinked or occluded.
Note
Carestation 620/650/650c (A1/A2)
5-36 2076163-001 03 17
6 Installation and Functional Checks
Installation and Functional Checks
In this section
6.1 Installation checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.2 Free breathing valve maintenance. . . . . . . . . . . . . . . . . . . . . . .6-5
6.3 Pressure limit circuit test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6
6.3.1 Test procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6.4 MOPV pressure relief valve test. . . . . . . . . . . . . . . . . . . . . . . . .6-8
6.4.1 Test setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8
6.4.2 Test procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
6.5 ACGO pressure relief valve test. . . . . . . . . . . . . . . . . . . . . . . .6-10
6.6 Scavenger positive relief functional check (for machine with
Passive AGSS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
6.7 Auxiliary O2 flowmeter tests. . . . . . . . . . . . . . . . . . . . . . . . . . .6-12
6.7.1 Functional test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
6.7.2 Flow accuracy test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-12
6.8 Integrated suction regulator tests. . . . . . . . . . . . . . . . . . . . . . .6-13
6.8.1 Gauge accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-13
6.8.2 Flow test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-13
6.8.3 Regulation test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-14
6.8.4 Vacuum bleed test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
6.8.5 Vacuum leak test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
6.9 Battery capacity test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
03 17 2076163-001 6-1
6.9.1 Test procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
6.10 Installing a secondary monitor. . . . . . . . . . . . . . . . . . . . . . . . 6-16
Do not perform testing or maintenance on the machine while it
is being used on a patient. Possible injury can result.
Items can be contaminated due to infectious patients. Wear
sterile rubber gloves. Contamination can spread to you and
others.
Obey infection control and safety procedures. Used equipment
may contain blood and body fluids.
WARNING
Carestation 620/650/650c (A1/A2)
6-2 2076163-001 03 17
6.1 Installation checklist
Serial Number: Date: (YY/MM/DD)
Hospital: Performed by:
1. Unpack and assemble the anesthesia system.
2. For the Pendant or Wall Mount anesthesia system, refer to the
accompanying Installation and Service instructions to install the system.
3. Access the Installation menu from the Install/Service menu and change
the following as required:
The Configuration settings must exactly match the installed
hardware for the system to work correctly.
a. Configuration (Section 4.4.1)
• Decimal Marker
• Language
• Gas Supply Colors
• O2 Flowtube
• Gas Supply Type
• Drive Gas
• Altitude
• ACGO Installed
• Aux Gas Installed
• AGSS Installed
ACGO and Aux Gas feature can only be available alternatively in
one system; only the enabled configuration option will be displayed
in the menu structure.
b. Units Menu (Section 4.4.2)
• Patient Weight
• CO2
• Gas Supply Pressure
• Paw
• Currency
c. Options List (Section 4.5)
• Check that the factory installed ventilation options match the
configuration purchased with the machine.
d. Copy Configuration Menu (Section 4.6)
WARNING
Note
6 Installation and Functional Checks
03 17 2076163-001 6-3
• Copy Configuration Menu can be used to save a configuration
to a USB memory device and then copy the configuration to
additional machines.
e. From the Service Menu select the Service Log Menu, review and
reset the error and alarm log entries (Section 4.8).
f. From the Service Menu select Calibration and perform the following
calibrations (Section 4.9):
• User Calibrations
• Manifold P Span
• Inspiratory Flow Valve
• Bleed Resistor
• Paw Span/Paw and ACGO Span*
• Zero Gas Transducers
• Mixer Flow Sensor Zero
• Zero ACGO/Zero AGSS/Zero ACGO and AGSS**
* When ACGO is equipped and enabled, Paw and ACGO Span
replaces Paw Span in the calibration items list.
**Zero ACGO/Zero AGSS/Zero ACGO and AGSS.
• When ACGO is equipped and enabled, Zero ACGO presents in
the Calibrations main menu.
• When AGSS is equipped and enabled, Zero AGSS presents in
the Calibrations main menu.
• When both ACGO and AGSS are equipped and enabled, Zero
ACGO and AGSS presents in the Calibrations main menu.
• If neither of ACGO and AGSS is equipped, this area is blank.
4. Complete the System Checkout by performing the following steps:
• Inspect the system (Section 3.1)
• System checkout (Section 3.3)
• Vaporizer Leak test (Section 3.4.2)
• Pipeline and cylinder tests (Section 3.7)
• Flow sensing test (Section 3.8)
• Flow control test (Section 3.9)
• Flush flow test (Section 3.10)
• Vaporizer back pressure and interlock test (Section 3.11)
• Alarm tests (Section 3.12)
• Auxiliary O2 flowmeter tests (Section 3.13)
• Integrated suction regulator tests, if equipped with option (Section
3.14)
• Power failure test (Section 3.15)
• Electrical safety tests (Section 3.16)
Note
Note
Carestation 620/650/650c (A1/A2)
6-4 2076163-001 03 17
6.2 Free breathing valve maintenance
1. Verify the machine is off, gas cylinders are off and the pipelines are
disconnected.
2. Remove the tabletop panel.
AC
.2
4.
20
0
3
1
2
4
3. Unscrew the valve seat (1) from the side of the interface manifold.
4. Inspect the flapper (2) and valve seat for nicks, debris and cleanliness.
5. To replace the flapper valve, remove the old flapper valve from the valve
seat.
6. If necessary, clean the new flapper valve with isopropyl alcohol.
7. Pull the tail (3) of the new free breathing valve flapper through the center
of the valve seat until it locks in place.
8. Trim the tail with 2 to 3 mm protruding outside surface of the valve seat.
9. Replace the o-ring (4). Lubricate with a thin film of Krytox.
10. Hand screw the assembly into the interface manifold.
11. Reconnect the pipeline supplies (if previously removed).
6 Installation and Functional Checks
03 17 2076163-001 6-5
6.3 Pressure limit circuit test
Perform the following steps to prepare the test setup:
1. Remove the bellows housing from the breathing system.
2. Remove the bellows.
3. Replace the bellows housing to the breathing system.
AC
.2
4.
27
2
4. Connect the inspiratory andexpiratory ports with a tube.
AC
.2
4.
27
3
5. Set the Bag/Vent Switch to Vent.
6.3.1 Test procedure
1. Start the PC Service Application.
2. Select Vent Schematic from the Vent Subsystem menu.
3. Set the Gas Inlet Valve to On.
4. Adjust the Insp Flow Valve counts to approximately 25000 counts and
observe the Airway Pressure reading on the Vent Schematic.
Carestation 620/650/650c (A1/A2)
6-6 2076163-001 03 17
5. Increase the flow count slowly until the Airway Pressure reading reaches
approximately 109 cmH2O.
6. Continue to increase the flow by one count and observe the airway
pressure until gas flow stops.
7. On the Status page, verify that:
Gas Inlet Valve Status reads Off.
If the MOPV pressure relief valve test will be performed after this test,
skip step 8 and step 9.
--
8. Reassemble the breathing system.
9. Perform the Preoperative Checkout Procedure (refer to the User’s
Reference manual).
Note
6 Installation and Functional Checks
03 17 2076163-001 6-7
6.4 MOPV pressure relief valve test
This test checks the MOPV in the vent engine assembly.
Objects in the breathing system can stop gas flow to the patient.
This can cause injury or death:
• Do not use a test plug that is small enough to fall into the
breathing system.
• Make sure that there are no test plugs or other objects
caught in the breathing system.
6.4.1 Test setup
1. Remove the bellows housing from the breathing system.
2. Remove the bellows assembly and pop off valve.
3. Occlude the drive gas port with an 18 mm plug (1407-8503-000).
AC
.2
4.
38
6
4. Set the Bag/Vent switch to Vent.
6.4.2 Test procedure
To test the pressure relief valve, you must establish a flow (blocked by setup
above) of 30 l/min through the Inspiratory Flow Control valve.
1. Turn on the system.
2. Access the Vent Schematic of the Service Application.
3. Set the Gas Inlet Valve to On.
WARNING
Carestation 620/650/650c (A1/A2)
6-8 2076163-001 03 17
4. Adjust the Inspiratory Flow Valve counts until the inspiratory flow value
on the schematic reads approximately 30 l/min.
5. Carefully listen for the MOPV relief weight to be relieving and “popping
off” from its seat (a purring sound). This indicates the valve is functioning
correctly.
6. Turn off the system.
7. Remove the tube from the inspiratory and expiratory port.
8. Reinstall the bellows and reassemble the breathing system.
9. Perform the Ventilator Leak test. See "3.4.1 Ventilator Leak test" for
detail procedures.
6 Installation and Functional Checks
03 17 2076163-001 6-9
6.5 ACGO pressure relief valve test
For machines with ACGO, follow below procedures to check the MOPV valve
in ACGO module:
1. Set the ACGO selector switch to ACGO.
2. Plug the ACGO port.
AC
.2
4.
27
4
3. Connect the O2 pipeline gas.
4. Adjust the O2 flow control knob to create a 15 l/min O2 flow.
5. Carefully listen for the pressure relief weight to be relieving, verify that
the pressure relief weight "pops off" from its seat or a purring sound can
be heard. This indicates the valve is functioning correctly.
6. Remove the plug from the ACGO port.
Carestation 620/650/650c (A1/A2)
6-10 2076163-001 03 17
6.6 Scavenger positive relief functional check (for machine
with Passive AGSS)
1. Connect the inspiratory and expiratory ports with a tube.
2. Occlude the bag port.
3. Occlude the AGSS exhaust port with an adapter (1500-3376-001) and a
plug (1407-8504-000).
AC
.2
4.
27
5
4. Set the APL Valve to Min and the Bag/Vent switch to Bag position.
5. Adjust the O2 flow to 6 l/min.
6. After one minute, observe the Pmean pressure on the screen.
• The pressure should rise to approximately 10 cmH2O (some noise
chattering should be heard).
• The pressure should indicate a pressure rise of less than 10
cmH2O.
• If the pressure rise is greater than 10 cmH2O, replace the pressure
relief valve in the AGSS and repeat this test procedure.
7. Remove the occlusions from the AGSS exhaust port and bag port.
8. Remove the short tube from the inspiratory and expiratory ports.
9. Connect the AGSS to the hospital evacuation system and verify proper
scavenging flow.
6 Installation and Functional Checks
03 17 2076163-001 6-11
6.7 Auxiliary O2 flowmeter tests
6.7.1 Functional test
1. Verify the O2 cylinder valve is ON or machine is connected to an O2
pipeline.
2. Rotate the flow control clockwise (decrease) to shut off the flow. The ball
should rest at the bottom of the flow tube and not move.
3. Rotate the flow control counterclockwise (increase). The ball should rise
immediately after rotation is begun. It should rise smoothly and steadily
with continued counterclockwise rotation. When a desired flow is set, the
ball should maintain in a steady position.
4. Rotate the flow control clockwise to shut off the flow.
6.7.2 Flow accuracy test
To check flow accuracy, be sure that the flow test device is capable of
measuring 0 to 15 l/min with an accuracy of ±2% of reading.
1. Connect the Aux O2 port to the flow test device.
2. Adjust the Aux O2 flowmeter so the center of the ball aligns with the
selected test point (observe that the ball maintains a steady position for
10 seconds).
3. The test device reading should be between the limits shown for each of
the selected settings in the table below.
Flow Tester Reading
Flowmeter Setting (l/min) Lower Limit (l/min) Upper Limit (l/min)
1 0.5 1.5
3 2.5 3.5
5 4.5 5.5
10 9.0 11.0
maximum
(valve fully open)
12.0 ------
4. Rotate the flow control clockwise to shut off the flow.
5. Close the O2 cylinder valve or disconnect the O2 pipeline.
Note
Carestation 620/650/650c (A1/A2)
6-12 2076163-001 03 17
6.8 Integrated suction regulator tests
There are two types of integrated suction systems for the Carestation
620/650/650c (A1/A2) anesthesia machine:
• Continuous Vacuum Regulator, Three-Mode, Pipeline Vacuum
• Continuous Vacuum Regulator, Three-Mode, Venturi Derived Vacuum
For Pipeline Vacuum systems, a vacuum source of at least 500 mmHg (67
kPa or 20 inHg) is required for testing. The supply open flow must be a
minimum of 50 l/min.
For Venturi Derived Vacuum systems, an Air source of at least 282 kPa (41
psi) is required for testing.
6.8.1 Gauge accuracy
To check gauge accuracy, be sure that the test gauge is capable of
measuring 0 to 550 mmHg with an accuracy of ±1% of reading.
1. With the suction regulator turned to the Off position, verify the gauge
needle is within the zero range bracket.
2. Connect a test device capable of measuring -550 to 0 mmHg to the
suction patient port.
3. Turn the mode selector switch to On (the left).
4. Ensure that the vacuum test gauge is in agreement with the suction
vacuum gauge ± 38 mmHg/5 kPa at the following test points.
Test points
Suction vacuum gauge Test gauge tolerance
100 mmHg (13.3 kPa) 62 - 138 mmHg (8.3 - 18.4 kPa)
300 mmHg (40 kPa) 262 - 338 mmHg (35 - 45 kPa)
500 mmHg (66.7 kPa) 462 - 538 mmHg (61.6 - 71.7) kPa)
6.8.2 Flow test
To check flow accuracy, be sure that the flow test device is capable of
measuring 0 - 30 l/min with an accuracy of ± 2% of reading.
1. Connect the patient port of the suction regulator to the flow test device.
2. Rotate the suction control knob fully clockwise (increase).
3. Turn the mode selector switch to On (the left) and verify that the flow
rate is:
Note
Note
6 Installation and Functional Checks
03 17 2076163-001 6-13
• at least 20 l/min.
4. Disconnect the test flowmeter.
6.8.3 Regulation test
1. Turn the mode selector switch to On (the left).
2. Occlude the patient port of the suction regulator.
3. Set the vacuum regulator gauge to 100 mmHg/13 kPa.
4. Open and close the patient port several times.
5. With the patient port occluded, the gauge should return to 100 mmHg/13
kPa within a tolerance of ± 10 mmHg/1.3 kPa.
6.8.4 Vacuum bleed test
1. Occlude the patient port of the suction regulator.
2. Set the vacuum regulator gauge to 100 mmHg/13 kPa.
3. Turn the mode selector switch to Off and observe the gauge needle. It
must return to the zerorange bracket or stop pin within 10 seconds.
6.8.5 Vacuum leak test
1. Turn the mode selector switch to Off.
2. Rotate the suction control knob a minimum of two full turns in the
clockwise direction (increase suction) to ensure its setting is not at the
Off position.
3. Occlude the patient port of the suction regulator.
4. Observe the suction gauge and verify that the needle does not move.
5. Rotate the suction control knob fully counterclockwise to ensure its
setting is at the fully off position.
6. Turn the mode selector switch to On (the left).
7. Observe the suction gauge and verify that the needle does not move.
Carestation 620/650/650c (A1/A2)
6-14 2076163-001 03 17
6.9 Battery capacity test
Although replacement of the backup batteries is recommended at the end of
4 years, batteries that pass the capacity test can be considered viable for
battery backup of the system for up to 6 years at the discretion of the
hospital.
Before testing the batteries, ensure that they are fully charged.
6.9.1 Test procedure
1. Turn the system on and start a case (simulated).
Simulation settings
Item Setting
Anesthetic Agent None (no Tec 6 + installed or plugged in)
Fresh Gas 3 LPM (30% O2)
Ventilation Mode VCV
VT 1500 mL
I:E Ratio 1:2
Breath Rate 15 BPM
PEEP 5 cmH2O
Task Light On - max brightness level
LCD Brightness 5 (or Max)
2. Unplug the AC power cord.
3. Allow the system to run on battery until it does an orderly shutdown and
powers off (can be in excess of 90 minutes).
4. Plug the AC power cord.
5. Press the On/Standby switch to turn on the system and enter the
Service Mode.
6. Launch the Service Application.
7. On the Power Diagnostics menu (Section 12.7) select Power
Management Board.
8. The Power Management Board window (Section 12.7.1) shows the Date
battery Tested (the last full battery discharge) and the Last Full
Discharge time.
• If the Last Full Discharge time is greater than 45 minutes, the
batteries can be left in service for one more year.
• If the Last Full Discharge time is less than 45 minutes, both
batteries should be replaced.
6 Installation and Functional Checks
03 17 2076163-001 6-15
6.10 Installing a secondary monitor
The Carestation 620/650/650c (A1/A2) anesthesia machine with Deluxe
display arm provides options for installing a secondary monitor, such as B650
or B850 monitors. For machine with a secondary monitor configuration, or
need to add a secondary monitor in the field upgrade, see the following
procedures for installation.
DO NOT install a secondary monitor to a standard display arm.
Make sure the screws are tightened to required torque (if
specified) and the result is recorded.
1. Make sure the B650 mounting bracket is already installed.
For machine with a B650/B850 monitor configuration at the first installation,
the B650 mounting bracket is installed at manufacture site. For a field
upgrade case, refer to the installation instruction (included in the Field
Upgrade Kit) for the B650 mounting bracket installation.
--
2. To install a B650 monitor:
• Install the GCX plunger plate (1) to the bracket, fasten the four
M5×16 mounting screws (2) with torque of 3.39 ± 0.17 Nm. Refer to
the GCX plunger plate installation instruction for more details.
 
1
2
AC
.2
4.
34
7
 
• Remount the main display if it was removed during the mounting
bracket installation. Fasten the display with four M5×12 screws and
torque to 3.39 ± 0.17 Nm.
• While pulling the locking screw (3) out, slide the B650 monitor base
into the groove of the plunger plate, release the locking screw to
lock the base with the plunger plate and a click will be heard. Tilt the
monitor to left side then to right side, make sure both sides of the
monitor base are locked into the groove, then hand tighten the two
nylon screws (4).
 
WARNING
WARNING
Note
Carestation 620/650/650c (A1/A2)
6-16 2076163-001 03 17
4
AC
.2
4.
34
8
3
 
3. To install a B850 monitor:
• Install the B850 monitor mounting bracket (5) to the B650 mounting
bracket, fasten the four M5×12 mounting screws (6) with torque of
3.39 ± 0.17 Nm.
 
6
AC
.2
4.
34
9
5
 
• Remount the main display if it was removed during the mounting
bracket installation. Fasten the display with four M5×12 screws and
torque to 3.39 ± 0.17 Nm.
• Attach the upper two M4 mounting screws (7) to the B850 monitor
(screw in but not tighten them). Hang the B850 monitor to the
mounting bracket with monitor being supported by the upper two
mounting screws. Attach the lower two M4 mounting screws (8) and
then tighten the four mounting screws with torque of 1.7 ± 0.09 Nm.
The B850 monitor mounting bracket provides different mounting
positions for the 15 inch monitor and 19 inch monitor. See below
illustrations for correct installation.
--
 
Note
6 Installation and Functional Checks
03 17 2076163-001 6-17
8
AC
.2
4.
35
0
7
8
7
15” B850 
19” B650 
 
4. Adjust the display mount clamp tilt:
• Tilt the displays backward and forward to various positions.
• Ensure that the displays remain in the set position (do not drop by
their own weight).
• If required, incrementally tighten the two axis bar clamping screws
(9) to ensure the displays remain in position (do not drop).
 
9
AC
.2
4.
35
1
 
Carestation 620/650/650c (A1/A2)
6-18 2076163-001 03 17
7 Troubleshooting
Troubleshooting
In this section
7.1 Troubleshooting guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3
7.2 Troubleshooting high pressure and low pressure leaks. . . . . . 7-4
7.3 Troubleshooting Failed state. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
7.4 Troubleshooting Startup Screen (POST) messages. . . . . . . . . 7-7
7.5 Troubleshooting the display. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
7.6 Breathing system leak test guide. . . . . . . . . . . . . . . . . . . . . . . . 7-9
7.6.1 Check valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
7.7 System Troubleshooting Flowcharts. . . . . . . . . . . . . . . . . . . . 7-11
7.7.1 Display Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . 7-12
7.7.2 Inaccurate Volume Ventilation Troubleshooting. . . . . . . 7-13
7.7.3 No Ventilation Troubleshooting. . . . . . . . . . . . . . . . . . . . 7-14
7.7.4 High Intrinsic PEEP Troubleshooting. . . . . . . . . . . . . . . 7-15
7.7.5 ACB Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . .7-16
7.7.6 ACB - FIB Communication Troubleshooting. . . . . . . . . . 7-17
7.7.7 DU - ACB Communication Troubleshooting. . . . . . . . . . 7-18
7.7.8 FIB troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19
7.7.9 LED related troubleshooting. . . . . . . . . . . . . . . . . . . . . . 7-20
7.7.10 Airway Module Troubleshooting. . . . . . . . . . . . . . . . . . 7-21
7.7.11 System Malfunction Screen Troubleshooting. . . . . . . . 7-22
03 17 2076163-001 7-1
7.8 System Malfunction and Gas Control Failure Flowchart Table. . 7-
23
7.9 Technical alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24
7.10 SIB Pneumatic Sense Tubing Leak Test. . . . . . . . . . . . . . . . 7-44
7.11 Flow sensor accuracy test. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-45
Carestation 620/650/650c (A1/A2)
7-2 2076163-001 03 17
7.1 Troubleshooting guidelines
Review system error logs using the PC Service Application. Review the logs
to identify issues and follow the appropriate subsystem troubleshooting
procedures.
Objects in the breathing system can stop gas flow to the patient.
This can cause injury or death:
• Do not use a test plug that is small enough to fall into the
breathing system.
• Make sure that there are no test plugs or other objects
caught in the breathing system.
WARNING
7 Troubleshooting
03 17 2076163-001 7-3
7.2 Troubleshooting high pressure and low pressure leaks
.
Problem Possible Cause Action
High Pressure Leak Pipeline leak Use a leak detector or Snoop to check for sourceof
leak.
Repair or replace defective parts.
O2 flush valve Use a leak detector or Snoop to check for source of
leak.
Make sure the tubing connections are tight.
Replace the O2 flush valve if defective.
Cylinder not installed properly Make sure cylinder is correctly aligned.
Verify that tee handles are tight.
Cylinder transducer Use a leak detector or Snoop to check for source of
leak.
Tighten/replace transducer if defective.
Cylinder gaskets Use a leak detector or Snoop to check for source of
leak.
Replace gasket if defective.
Relief valves Use a leak detector or Snoop to check for source of
leak.
Replace the relief valve if defective.
Low Pressure Leak (with
vaporizer mounted)
Vaporizer not installed properly Reseat vaporizer if not installed properly.
Vaporizer leaks Check whether the vaporizer leaks, have vaporizer
serviced if leaks.
Missing or damaged o-ring on
vaporizer manifold
Check condition of o-ring.
Replace if missing or damaged.
Loose fill port Check fill port. Tighten if loose.
Low Pressure Leak (with
or without vaporizer)
Leaking port valve on vaporizer
manifold
Use the Vaporizer Manifold Valve Tester to check for
leak. See "9.19.2 Checkout procedure for manifold port
valve" for instructions.
If test fails, tighten, repair, or replace as needed.
Leak in gas control module If vaporizer manifold passed previous tests:
• Remove tubing from input side of gas control
module and occlude the ports.
• Perform leak test of gas controls. See "3.4.3 Gas
Controls test". If test fails, repaire the gas control
module.
Leaking flush valve Attach pressure measuring device on fresh gas outlet.
Replace the flush valve if device shows increased
pressure.
Carestation 620/650/650c (A1/A2)
7-4 2076163-001 03 17
Problem Possible Cause Action
Bellows leak Pop-off valve diaphragm not
sealing properly
Disassemble pop-off valve; inspect and clean seats;
reseat and reassemble it.
Bellows mounting rim loose Remove rim and pop-off valve diaphragm; reseat
diaphragm; snap the rim into place.
Bellows improperly mounted or
has a hole or tear
Check that only the last bellows convolute is mounted
to the rim and that the ring roll is in the groove under
the rim.
Inspect the bellows for damage, replace if defective.
Breathing System Leak Absorber canister open or
missing
Install canister properly.
Damaged/missing canister o-
ring/seals
Check/replace o-rings or the seals.
APL valve not closed Adjust the APL valve to the maximum pressure limit
position.
The breathing system tubes
damage or the connectors loose
Replace with new tubes or reconnect the connectors.
The check valve of inspiratory/
expiratory ports not correctly
installed.
Check the check valve status.
N2O flow does not
decrease with O2 flow
Defective flow mixer Replace the flow mixer assembly as necessary.
Bellows over inflate The exhaust outlet is blocked Check the exhaust outlet. Replace if necessary.
O2 flush button is
malfunctioning.
Check the O2 flush button. Replace if necessary.
Flow mixer module is
malfunctioning.
Check the flow mixer assembly. Replace if necessary.
Unable to begin
mechanical ventilation
Breathing system is not fully
engaged
Remount the breathing system.
No drive gas supply Check the drive gas supply.
Defective Bag/Vent switch Check Bag/Vent switch. Replace as necessary.
7 Troubleshooting
03 17 2076163-001 7-5
7.3 Troubleshooting Failed state
In the Failed state, normal operations are not possible due to a problem in
the system, The system is placed into a safe state where only manual
ventilation is available.
AC
.2
4.
23
3
In a Failed state condition, you can copy R&D logs to a USB memory device.
1. With the system still in the Failed state, attach a USB memory device to
the display unit.
2. Press the Home key on the keypad to start the download.
3. Wait approximately 60 seconds while the logs are downloaded to the
USB memory device (no apparent activity).
Do not remove the USB memory device until the screen shows copy is
complete.
--
Note
Carestation 620/650/650c (A1/A2)
7-6 2076163-001 03 17
7.4 Troubleshooting Startup Screen (POST) messages
If the system encounters a problem at startup to where it cannot initiate
system software, a BIOS error message indicating the failure will be
displayed.
"***Note:" items generate 10 seconds of beeping.
.
Message What it indicates Troubleshooting Action Required
***NOTE:
Alarm speaker not detected.
Check connection.
Service is required to correct a
faulty connection to the
speaker.
Reconnect the speaker if possible. Replace the
Carrier and Com Express board assembly if speaker
connection can not be corrected.
***NOTE:
CMOS battery is weak.
Please replace.
Service is required to replace
the Carrier board battery.
Replace the battery on the Carrier board. Reload
software and check out the system.
***NOTE:
CPU Board Supply Voltage
Out of Range.
Indicates 1.5V_CB, 5V_CB, or
3.3V_CB voltage out of range.
Replace the Carrier and Com Express board
assembly.
***NOTE:
RTC date/time error.
Battery may be weak.
Service is required to replace
the Carrier board battery.
Replace the battery on the Carrier board. Reload
software and check out the system.
.
Message What it indicates Troubleshooting Action Required
***ERROR:
No bootable device available.
This indicates a problem with
the internal CF card.
Check or replace the internal Compact Flash card.
***ERROR:
Program load failed - CRC.
This usually indicates a
software file corruption.
Reload the software and check out the system.
***ERROR:
RAM memory error.
This indicates a hardware
failure.
Replace the Memory Module.
Replace the Carrier and Com Express board
assembly.
***ERROR:
System reset: ECxx xx xx . . .
This usually indicates a
software failure.
Report this error, along with the machine logs, to
Technical Support. Reload software. If problem
persists, replace the internal Compact Flash card
and reload software. If problem persists, replace the
Carrier and Com Express board assembly.
***ERROR:
System reset: FFFF FF FF
Indicates the Carrier board
battery has lost contact with the
holder or the battery is below
voltage.
Replace the Carrier board battery if below rated
voltage.
Install the software USB Flash Media to restore
system setups.
***ERROR:
Watchdog circuit failed.
This indicates a hardware
failure.
Replace the Carrier and Com Express board
assembly.
7 Troubleshooting
03 17 2076163-001 7-7
7.5 Troubleshooting the display
.
Symptom Resolution
System will not boot from external USB
Flash Drive during software installation
process
Verify that the USB Flash Drive is the correct part number and is properly
inserted.
Note: Software USB Flash Drives are formatted at the factory and cannot
be copied.
Attempt to load software using the secondary USB port.
Try loading software from a backup USB Flash Drive.
Replace the Carrier Board and Com Express Board Assembly.
Rotary encoder fails to work Open the display and verify that the cable connecting the rotary encoder
to the Carrier Board is properly seated within the mating connector.
Replace the rotary encoder.
Replace the Carrier Board and Com Express Board Assembly.
Unit fails to boot Troubleshoot the display.
Excessive fan noise Open the display and verify Com Express fan noise.
Replace the fan assembly if causing excessive noise.
Touchscreen fails to work Verify that screen lock is not On.
Check internal cables and connections.
Replace the Touch Controller Board.
Replace the Touch Bezel Assembly.
“App Not Loaded” message is displayed Load software.
Replace CF card.
Touch points are misaligned (out of
calibration)
Access the Display Diagnostics menu in Service mode and Calibrate the
Touch points. See "4.10 Display Diagnostics".
Carestation 620/650/650c (A1/A2)
7-8 2076163-001 03 17
7.6 Breathing system leak test guide
Before proceeding with these breathing system leak tests, perform the
System checkout procedure detailed in Section 3.
Do the system checkout (Section 3.3):
• Afailure in Full Test - Ventilator Leak test indicates a leak in Vent
Mode.
• A failure in Full Test - Circuit leak test indicates a leak in Bag Mode.
Objects in the breathing system can stop gas flow to the patient.
This can cause injury or death:
• Do not use a test plug that is small enough to fall into the
breathing system.
• Make sure that there are no test plugs or other objects
caught in the breathing system.
7.6.1 Check valves
Inspiratory check valve
1. Turn on the system.
2. Access User Calibrations menu and perform Flow and Pressure
calibration.
3. Access Service Mode and perform Paw Span or Paw and ACGO Span
(if ACGO is equipped) calibration.
4. Start a case (simulated).
5. Set fresh gas flow to minimum.
6. If equipped with an ACGO, connect a tube between the ACGO outlet
and the Inspiratory port.
• Set the ACGO switch to the ACGO position.
• Verify that the Airway Pressure reading increases to 10 cmH2O in
30 seconds.
7. If not equipped with an ACGO, connect a tube to the Inspiratory port.
• Occlude the bag port.
• Stretch the tube approximately 5 cm.
• Occlude the open end of the tube.
• Release the tension on the tube.
• Ensure that the Airway Pressure reading increases to between 20
and 40 cmH2O. If not, repeat the above steps, but stretch the tube a
little further.
Note
WARNING
7 Troubleshooting
03 17 2076163-001 7-9
• Verify that the Airway Pressure reading does not drop by more than
10 cmH2O in 30 seconds.
Expiratory check valve
1. Turn on the system and start a case (simulated).
2. Set all gas flows to minimum.
3. Set the Bag/Vent switch to Bag.
4. Fully close the APL valve.
5. Connect a tube between the Inspiratory port and the Bag port.
6. Slowly increase the O2 flow to achieve 30 cmH2O.
The leak rate is equal to the flow needed to maintain 30 cmH2O.
The leak rate should be less than 500 ml/min.
Carestation 620/650/650c (A1/A2)
7-10 2076163-001 03 17
7.7 System Troubleshooting Flowcharts
7 Troubleshooting
03 17 2076163-001 7-11
7.7.1 Display Troubleshooting
Carestation 620/650/650c (A1/A2)
7-12 2076163-001 03 17
7.7.2 Inaccurate Volume Ventilation Troubleshooting
7 Troubleshooting
03 17 2076163-001 7-13
7.7.3 No Ventilation Troubleshooting
Carestation 620/650/650c (A1/A2)
7-14 2076163-001 03 17
7.7.4 High Intrinsic PEEP Troubleshooting
7 Troubleshooting
03 17 2076163-001 7-15
7.7.5 ACB Troubleshooting
Carestation 620/650/650c (A1/A2)
7-16 2076163-001 03 17
7.7.6 ACB - FIB Communication Troubleshooting
7 Troubleshooting
03 17 2076163-001 7-17
7.7.7 DU - ACB Communication Troubleshooting
Carestation 620/650/650c (A1/A2)
7-18 2076163-001 03 17
7.7.8 FIB troubleshooting
7 Troubleshooting
03 17 2076163-001 7-19
7.7.9 LED related troubleshooting
Carestation 620/650/650c (A1/A2)
7-20 2076163-001 03 17
7.7.10 Airway Module Troubleshooting
7 Troubleshooting
03 17 2076163-001 7-21
7.7.11 System Malfunction Screen Troubleshooting
Carestation 620/650/650c (A1/A2)
7-22 2076163-001 03 17
7.8 System Malfunction and Gas Control Failure Flowchart
Table
.
Error Display Type Flow Chart
ACB CLOCK SPEED System Malfunction Anesthesia Computer Board
Troubleshooting (Flowchart 6)
ACB COM FAIL System Malfunction DU - ACB Communication
Troubleshooting (Flowchart 8)
ACB CPU TEST FAIL System Malfunction Anesthesia Computer Board
Troubleshooting (Flowchart 6)
ACB DCB COM FAIL System Malfunction DU - ACB Communication
Troubleshooting (Flowchart 8)
ACB FLASH FAIL
ACB HW WATCHDOG
ACB MICROPROC ERROR
ACB PROCEDURE COM FAIL
ACB RAM ERROR
ACB REDUNDANT MEMORY FAIL
ACB SW ERROR
ACB SW WATCHDOG
ACB UNEXPECTED RESET
System Malfunction Anesthesia Computer Board
Troubleshooting (Flowchart 6)
AIR FRESH GAS FLOW SENSOR FAIL
AIR MIXER VALVE FAIL
Gas Control Failure Screen FIB Troubleshooting (Flowchart 9)
CPLD TEST FAIL
DCB PROCEDURE COM FAIL
System Malfunction Anesthesia Computer Board
Troubleshooting (Flowchart 6)
FIB +5VA FAIL
FIB +5VD FAIL
N2O FRESH GAS FLOW SENSOR FAIL
N2O MIXER VALVE FAIL
O2 BYPASS VALVE FAIL
O2 FRESH GAS FLOW SENSOR FAIL
Gas Control Failure Screen FIB Troubleshooting (Flowchart 9)
O2 LATCHING VALVE FAIL System Malfunction FIB Troubleshooting (Flowchart 9)
PWR CNTRL SPL4 CHANNEL ERROR
PWR CNTRL SPL5 CHANNEL ERROR
Gas Control Failure Screen FIB Troubleshooting (Flowchart 9)
7 Troubleshooting
03 17 2076163-001 7-23
7.9 Technical alarms
The Error Log includes technical alarms and other error conditions reported
by the system.
A technical alarm (equipment alarm), as apposed to a parameter alarm, is an
alarm condition that exists whether or not a patient is connected to the
machine. Technical alarms include:
• Status alarms
• Failed state alarms - internal problem prevents normal operation
• Ventilator failure alarms
• Ventilator Monitoring Only alarms
• Gas control failure alarms
Alarms that do not fit into any particular category but are technical in nature
are referred to as a Status alarms in this table.
Source table:
Source Code Description
AC Anesthesia Computer (ACB)
DC Display Controller
FIB Frame Interface Board
SIB Sensor Interface Board
PC Power Controller (PMB)
MGAS Airway Gas Module
Log entries may be preceded with the subsystem that reported the error
condition (example: “ACB: +12.0V H AMPS ALT O2”). The Error Log entry
listed below does not include the subsystem prefix that reported the alarm
(ACB:).
.
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
12 HR TEST Turn power Off and On
for self tests
System has been operating
for longer than 12 hours
without a power up self test.
Low AC -Vent
DC
checks
enable
criteria
System state is in
Checkout.
At next available time, set the On/Standby switch from On to Off, then set back to On.
ACB +5VA FAIL No data. Ventilator
failure
VACB +5VA < 4.85 VDC or
VACB +5VA > 5.15 VDC
High AC, DC ACB +12.5 V (10
VA) value is
between 12.125 V
and 13.125 V.
Reboot System. If problem continues, replace the ACB.
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7-24 2076163-001 03 17
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
ACB +5VD FAIL No data. Ventilator
failure
VACB +5VD < 4.85 VDC or
VACB +5VD >5.15 VDC
High AC, DC ACB +12.5 V (10
VA) value is
between 12.125 V
and 13.125 V.
Reboot System. If problem continues, replace the ACB.
ACB CLOCK
SPEED
System Malfunction AC clock frequency > 1.1
times of expected clock
frequency or < 0.9 times of
expected clock frequency
High AC The system is in
the Therapy state
Reboot system. If problem continues, replace the ACB.
ACB COM FAIL System Malfunction After establishing initial
communication, the Display
Computer does not receive
any messages from
Anesthesia Computer for 10
seconds.
High DC
Reboot System. If problem continues, replace the ACB.
ACB CPU TEST
FAIL
System Malfunction A CPU instruction Test
Failure occurs.
High AC The system is in
the Therapy state
Reboot System. If problem continues, replace the ACB.
ACB DCB COM FAIL System Malfunction The Anesthesia Computer
receives no system state
messages from the Display
Computer for 10 seconds.
High AC Initial
communications
established.
Reboot System. If problem continues, check the ACB to FIB communication LED’s (or SIB
communication LED’s).
If the RCV and XMT (or TXD and RXD) LED’s indicate activity, check DU cable connections,
replace Display Controller PCB if problem continues.
If the RCV and XMT (or TXD and RXD) LED’s indicate no activity, check the ACB connection,
replace the ACB if problem continues.
ACB EEPROM FAIL Memory (EEPROM)
failure
Read/Write failure or CRC
failure of the EEPROM
located on the ACB.
Low AC
Reboot System. If problem continues, replace the ACB.
ACB FIB
COMMUNICATION
FAIL
Gas controls failure, O2
only
The interval of two valid
messages exchanged
between the ACB and the
FIB is greater than 100
milliseconds.
High AC and
FIB
Initial
communications
established.
RebootSystem. If problem continues, check the ACB to SIB communication LED’s(DS8,
DS9).
If the LED’s indicate activity, check FIB cable connections; replace FIB if problem continues.
If the LED’s indicate no activity, check the ACB connection; replace the ACB if problem
continues.
7 Troubleshooting
03 17 2076163-001 7-25
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
ACB FLASH FAIL System Malfunction CRC Failure occurs in the
code space.
High AC
Reboot System. If problem continues, replace the ACB.
ACB HW
WATCHDOG
System Malfunction Hardware watchdog fails
boot up test, times out, or
detects an incorrect code
sequence.
High AC
Reboot System. If problem continues, replace the ACB.
ACB MICROPROC
ERROR
System Malfunction Unexpected microcontroller
exception occurs on the ACB
(bus error, address error,
etc.).
High AC
Reboot System. If problem continues, replace the ACB.
ACB PROCEDURE
COM FAIL
System Malfunction • The Display Computer
receives no procedure
messages from the
Anesthesia Computer
for 15 seconds +/- 1
second.
• The Display Computer’s
procedure message
does not match the
Anesthesia Computer’s
procedure message for
15 seconds +/- 1
second.
High DC System in Therapy
state
Reboot system. If problem continues, check the ACB to FIB communication LED’s (or SIB
communication LED’s).
If the RCV and XMT (or TXD and RXD) LED’s indicate activity, check DU cable connections,
replace Display Controller PCB if problem continues.
If the RCV and XMT (or TXD and RXD) LED’s indicate no activity, check the ACB connection,
replace the ACB if problem continues.
ACB RAM ERROR System Malfunction Memory Test Failure occurs
due to the detection of
multiple bit errors.
High AC
Reboot System. If problem continues, replace the ACB.
ACB REDUNDANT
MEMORY FAIL
System Malfunction A redundantly stored
parameter could not be
stored properly or was
corrupted.
High AC
Reboot System. If problem continues, replace the ACB.
ACB SW ERROR System Malfunction Unexpected software error High AC
Reboot System. If problem continues, repload ACB software.
If problem continues, replace the ACB.
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7-26 2076163-001 03 17
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
ACB SW
WATCHDOG
System Malfunction Software watchdog failed
power-up test, timed out, or
a software function was
delinquent for too long.
High AC
Reboot System. If problem continues, replace the ACB.
ACB UNEXPECTED
RESET
System Malfunction Unexpected reset of AC High AC
Reboot System. If problem continues, replace the ACB.
ACGO Vol and Apnea
monitoring off
Non Circle (ACGO) selected Low DC System has
ACGO.
No Service Action Required.
ACMains POWER
FAIL
Plug in power cable. On
battery
ACMains_GOOD goes and
stays low for at least 3
seconds (3 software loops)
Medium PC 60 minutes of
battery power
available.
No Service Action Required.
AIR FRESH GAS
FLOW SENSOR
FAIL
Gas controls failure, O2
only
FIB reports an Air Fresh Gas
Flow Sensor Fail alarm to
ACB
Medium AC, FIB System equipped
with Air fresh gas
and initial
communications is
established
between ACB and
FIB.
Reboot system. If problem continues, check Air fresh gas flow sensor signal in Service Mode.
Replace Air fresh gas flow sensor if defective.
AIR MIXER VALVE
FAIL
Gas controls failure, O2
only
Air mixer valve feedback
current check failed
Medium AC, FIB System equipped
with Air fresh gas
and initial
communications is
established
between ACB and
FIB.
Reboot system. If problem continues, check Air mixer valve connection. Replace Air mixer
valve if defective.
AGSS HIGH Scavenging flow is too
high
AGSS setting is configured
to Fixed 25 and the AGSS
flow is greater than 36 l/min;
or AGSS setting is
configured to ISO Low Flow
and the AGSS flow is greater
than 50 l/min; or AGSS
setting is configured to ISO
High Flow and the AGSS
flow is greater than 80 l/min
Low AC AGSS setting is
configured to
Fixed 25/ISO Low
Flow/ISO High
Flow
No service action required.
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03 17 2076163-001 7-27
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
AGSS LOW Scavenging flow is too
low
AGSS setting is configured
to Fixed 25 and the AGSS
flow is less than 21 l/min; or
AGSS setting is configured
to ISO Low Flow and the
AGSS flow is less than 21 l/
min, or AGSS setting is
configured to ISO High Flow
and the AGSS flow is less
than 42 l/min.
Low AC AGSS setting is
configured to
Fixed 25/ISO Low
Flow/ISO High
Flow
No service action required.
AIR PIPE INVALID Cannot monitor Air
pipeline
Air Pipeline pressure is
invalid.
Medium DC
Check Air Pipeline supply.
Check/Replace Cable connecting Air Pipeline Pressure Sensor Board to FIB.
Check/Replace Air Pipeline Pressuer Sensor Board.
AIR PRESS LOW Air supply pressure low Air pipeline pressure is less
than 252 kPa and the air
cylinder has a pressure less
than 2633 kPa for one
second.
Medium AC, DC Air is selected as
the balance gas
with a non zero
flow of air or the
ventilator uses air
as the drive gas
and mechanical
ventilation is ON.
Check Air supply.
Check/Replace Air Pipeline Pressure Sensor Board/Cylinder Pressure Transducer.
AUX Vol and Apnea
monitoring off
Auxiliary Gas is turned on. Low DC System has an
Auxiliary Gas.
No service action required.
AMBIENT SENSOR
FAIL
Vent fail. Monitoring only Anesthesia Computer Board
detects the ambient pressure
sensor failed.
Medium
or Low
AC
Reboot System. If problem continues, replace the ACB.
BATT V VERY LOW Plug in power cable. On
battery
Available battery power
decreases to between 5 and
20 minutes.
Medium PC AC Mains Power
Failure in
progress.
Leave the system plugged in to charge the batteries.
If problem continues, check the battery charge circuit in Service Software.
Replace Battery.
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Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
BATTERY CHARGE
FAIL
No battery backup The system is in standby and
the battery charge current is
>2.0 amps.
or
The system is powered on
with a battery current >1.3
amps.
Medium PC
Check the battery charge circuit in Service Software.
Replace the batteries.
BATTERY EMPTY System shutdown in <5
min
Available battery power is
between 1 and 5 minutes.
High PC AC Mains Power
Failure in
progress.
Leave the system plugged in to charge the batteries.
If problem continues, check the battery charge circuit in Service Software.
Replace the batteries.
BATTERY FAIL No Battery Backup. Battery voltage <10.5 V.
or
While in bulk, over, or float
charging battery is
<10.5VDC.
or
Battery has been bulk
charging for >12 h in
Standby or 16 h while
powered on.
or
Voltage > 15.5V during bulk
or over charging and normal
current >0.25 Amps
orWhile in bulk charging
battery charge current is
<0.15 Amps for 20 seconds.
Medium PC
Leave the system plugged in to charge the batteries.
If problem continues, check the battery charge circuit in Service Software.
Replace the batteries.
BATTERY LOW Plug in power cable. On
battery
Available battery power
decreases to between 40
and 60 minutes.
Medium PC Mains AC Mains
Power Failure in
progress.
Leave the system plugged in to charge the batteries.
If problem continues, check the battery charge circuit in Service Software.
Replace the batteries.
BATTERY MISSING No battery backup Any battery voltage is less
than +2.0 VDC.
Medium PC
Connect the battery.
Leave the system plugged in to charge the battery.
If problem continues, check the battery charge circuit in Service Software.
Replace the batteries.
7 Troubleshooting
03 17 2076163-001 7-29
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
BATTERY
REVERSED
CONNECTIONS
No battery backup Any battery voltage is less
than –10.0 VDC
Medium PC
Check battery connections.
BATTERYV LOW Plug in power cable. On
battery
Available battery power
decreases to between 20
and 40 minutes.
Medium PC AC Mains Power
Failure in
progress.
Leave the system plugged in to charge the batteries.
If problem continues, check the battery charge circuit in Service Software.
Replace the batteries.
BELLOWS
COLLAPSED
Unable to drive bellows Manifold pressure is > Paw
+ 10 + [0.25*(Insp valve
flow)]
Low AC, SIB In range Paw and
manifold pressure
data available and
mechanical
ventilation On.
Check the breathing circuit for leaks or hose occlusions.
Perform flow sensor calibration.
Check drive gas check valve.
Check SIB cabling.
Replace SIB.
BREATHING
SYSTEM NOT
LATCHED
Breathing system loose Breathing system detection
switch indicates breathing
system not latched.
Low AC, SIB
Check/replace breathing system detection switch.
Check/replace harness (breathing system detection switches to SIB).
CAL DATA FAILURE
IN EEPROM
Service calibration
advised
Default cal data is being
used due to corrupt data in
cal region.
Low AC
Perform complete service level calibrations (ventilator).
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7-30 2076163-001 03 17
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
CARRIER BOARD
OVERHEAT
Cooling fans failed. May
overheat.
• Both Display Unit
thermistors have a
temperature reading >=
0 degrees C and < 85
degrees C, if Display
Unit Thermistor 1
temperature reading is
>= Display Unit
Thermistor 2
temperature reading
and Display Unit
Thermistor 1
temperature reading is
> 65 degrees C.
• Both Display Unit
thermistors have a
temperature reading >=
0 degrees C and < 85
degrees C, if Display
Unit Thermistor 1
temperature reading is
< Display Unit
Thermistor 2
temperature reading
and Display Unit
Thermistor 2
temperature reading is
> 65 degrees C.
• When only one of the
Display Unit thermistors
has a temperature
reading >= 0 degrees C
and < 85 degrees C, if
the temperature reading
for the Display Unit
thermistor in the >= 0
degrees C and < 85
degrees C range is > 65
degrees C.
• Neither Display Unit
thermistor has a
temperature reading >=
0 degrees C and < 85
degrees C.
Medium DC
Check for proper operation of the Com Express fan.
Replace fan.
Replace the Carrier and Com Express board assembly.
7 Troubleshooting
03 17 2076163-001 7-31
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
CHECK FLOW
SENSOR
Check flow sensors During Mechanical breaths,
the measured flow for 6
consecutive breaths, to and
from the patient, does not
meet certain criteria. No or
negative flow on Insp flow
sensor during inspiration or
negative flow on Exp flow
sensor.
Medium AC, SIB In-range flow data
available during
mechanical
ventilation.
Check flow sensor connections.
Check the breathing circuit.
Check SIB sensor tubing for leaks.
Perform flow sensor calibration.
Check Insp/Exp check valves.
Check/Replace flow sensors.
COM ERROR VENT
TO ACB
No data. Ventilator
failure
After regular
communications has been
established between the
Ventilator boundary object
and the SIB CPU, a total loss
of communications shall be
declared if the Ventilator
boundary object receives no
messages from the SIB CPU
for 35 milliseconds.
High AC, SIB
Reboot System. If problem continues:
Check cabling.
Replace SIB.
Replace ACB.
CPLD TEST FAIL System Malfunction Complex Programmable
Logic Device (CPLD) test
failed.
High AC
Reboot System. If problem continues, replace ACB.
CPU FAN SPEED
FAIL
Cooling fans failed. May
overheat.
CPU fan speed is less than
2500 RPM (50% of nominal
speed)
Medium DC
This message relates to the CPU heatsink fan in the DU.
• Turn on unit with back cover removed and verify CPU fan is not working.
• Verify fan connector is plugged in.
• Replace Com Express fan.
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Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
CPU OVERHEAT Cooling fans failed. May
overheat.
Temperature reading of the
CPU thermal diode is > 80
degrees C
Medium DC
This message relates to the CPU fan in the DU.
• With unit running, remove the fan filter from back of unit and feel if fan is working.
• Check whether the fan connector is plugged in.
• Replace the fan if defective.
DCB PROCEDURE
COM FAIL
System Malfunction • The Anesthesia
Computer receives no
procedure messages
from the Display
Computer for 15
seconds +/- 0.5 second.
• The Anesthesia
Computer’s procedure
message does not
match the Display
Computer’s procedure
message for 15
seconds +/- 0.5 second.
High AC System is in
Therapy state.
Reboot System. If problem continues, check the ACB to FIB communication LED’s (DS10,
DS11) or SIB communication LED’s (DS8, DS9).
If the LED’s indicate activity, check DU cable connections, replace Display Controller board if
problem continues.
If the LED’s indicate no activity, check the Anesthesia Control board connection, replace the
Anesthesia Control board if problem continues.
DRIVE GAS LOST Ventilator has no drive
gas
O2 is the drive gas and the
O2 PRESS LOW alarm is
active.
or
Air is the drive gas and the
Air PRESS LOW alarm is
active.
High AC, DC
checks
enable
criteria
Mechanical
Ventilation is ON.
Connect O2 or AIR supply.
See Action/Troubleshooting for O2 PRESS LOW or AIR PRES LOW.
DRV GAS FLOW
SENSOR CAL
ZERO FAIL
Vent fail. Monitoring only Drive gas flow sensor power
on self-test failed.
Medium
(Vent
mode)
or Low
(Bag
mode)
AC
Check the drive gas flow sensor connection.
Replace the flow sensor if defective.
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03 17 2076163-001 7-33
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
DRV GAS FLOW
SENSOR FAIL
Vent fail. Monitoring only Anesthesia Computer
detects the drive gas flow
sensor failed.
Medium
(Vent
mode)
or Low
(Bag
mode)
AC
Check the drive gas flow sensor connection.
Replace the flow sensor if defective.
EXP FLOW
SENSOR EEPROM
FAILURE
Replace Exp flow
sensor
EEPROM cal data read
failure
Low AC, SIB
Replace Exp Flow Sensor.
FAN FAIL Cooling fan needs
service. System OK
Fan Power Status Bit is Low
(FAN1_GOOD).
Medium PC Communication
between the
Power Controller
and the Display
Computer is
established.
Check connection of cooling fan. Replace cooling fan if defective.
Check/Replace the PMB if problem continues.
FIB +5VA FAIL Gas controls failure, O2
only
VFIB +5VA < 4.85 VDC or
VFIB +5VA >5.15 VDC
Medium AC, DC FIB +12.5 V (10
VA) value is
between 12.125 V
and 13.125 V.
Check/Replace FIB.
FIB +5VD FAIL Gas controls failure, O2
only
VFIB +5VD< 4.85 VDC or
VFIB +5VD >5.15 VDC
Medium AC, DC VFIB +5VA < 4.85
VDC or VFIB
+5VA < 5.15 VDC
Check/Replace FIB
FLOW SENSOR
CAL ERROR
Calibrate flow sensors Insp or Exp flow sensor or
the airway or manifold
pressure sensor zero offset
out of range (flow calibration
failure)
Low AC, SIB Flow sensor
detected
See associated Errors. i.e. “EXP FLOW SENSOR CAL ERROR” or “AIRWAY SENSOR CAL
ERROR”.
FLOW VALVE LEAK
TEST FAIL
Vent fail. Monitoring only Anesthesia Computer
detects the flow value though
leakage test failed in the
POST state
Medium
(Vent
mode)
or Low
(Bag
mode)
AC
Reboot System. If problem continues, replace flow control valve.
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Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
FRONT PANEL
COM FAIL
Display panel controls
failure
Key pad controller fails to
send “life tick” for greater
than 10 Sec.
Medium DC
Reboot system. If problem continues, replace Display Controller Board.
GAS FLOW >
300ML/MIN
Turn off gas flow Gas flow is greater than 300
ml/min while the system is in
Checkout: General sub-
state.
Medium DC
Turn off gas flow. If problem continues, perform "Zero Mixer Flow Sensors" in Service Mode.If
problem continues, check/calibrate the needle valves.
GAS INLET VALVE
BOOTUPNo data. Ventilator
failure
The Boot-up test fails High AC, SIB
Check Gas Inlet Valve solenoid connection.
Replace Gas Inlet Valve.
Rebuild the Gas Inlet Valve components.
Replace ACB.
INSP FLOW
SENSOR EEPROM
FAILURE
Replace insp flow
sensor
EEPROM cal data read
failure
Low AC, SIB
Replace the Inspiratory Flow Sensor.
LOSS OF VENT
PARAMETER
SETTINGS
Vent fail. Monitoring only Ventilator Parameter
Settings from the Display
Computer arrived more than
10 seconds ago.
Medium
( Vent
mode or
Low
(Bag
mode)
AC
Reboot System. If problem continues, check the ACB to FIB communication LED’s (DS10,
DS11) or SIB communication LED’s (DS8, DS9).
1. If the LED’s indicate activity, check DU cable connections; replace Display Controller board
if problem continues.
2. If the LED’s indicate no activity, check the ACB connection; replace the ACB if problem
continues.
MANIFOLD PAW
SENSOR FAIL
Vent fail. Monitoring only Calibration failure at bootup. Medium AC
In Service Software, under “Vent Flow and Pressure” (Section 12.9.2), verify the Manifold Flow
counts is between 2575 and 4447. Disconnect the White in-line connector in the Manifold
Pressure. If the counts return within specified range, check for occlusions in the tubing. If the
counts do not return within the specified range, replace the ACB.
MGAS CHECK
SAMPLE GAS OUT
>20 SEC
Check sample gas out MGAS SPEC. Continuous
Occlusion Bit set
Medium MGAS MGAS present
and MGAS
communicates
continuous
occlusion for 20
seconds.
Replace sample line. See Airway Module TRM for further Troubleshooting.
7 Troubleshooting
03 17 2076163-001 7-35
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
MGAS INLET
FILTER RESIDUE
>40 SEC
Replace D-Fend MGAS SPEC (Residue
buildup on the water trap
membrane. This decreases
air flow).
Medium MGAS MGAS present
and MGAS
communicates the
Replace Trap
alarm bit for 40
seconds.
Replace D-Fend. See Airway Module TRM for further Troubleshooting.
MGAS LINE
BLOCKED >20 SEC
Sample line blocked MGAS SPEC states The
sample tubing inside or
outside the monitor blocked,
or the water trap is occluded.
Medium MGAS MGAS present
and MGAS
communicates the
continuous
occlusion alarm
for 20 seconds.
Replace sample line. See Airway Module TRM for further Troubleshooting.
MGAS SAMPLE
FLOW DEVIATION
Low gas sample flow Sample flow is less than
80% of the Airway Module’s
specific nominal flow value
for 20 consecutive seconds.
(The alarm is based on
Airway Module specific
nominal sample flow value
120 mL/min for
CARESCAPE - PROLITE
Airway Modules.)
Low MGAS MGAS present
and MGAS
communicates
valid sample flow
data.
Troubleshoot Airway Module flow issues using released documentation for the specific type of
Airway Module.
MGAS SAMPLE
LINE NOT
CONNECTED > 40
S
Check D-Fend MGAS SPEC states The
sample tubing or the D-Fend
module is not installed.
Medium MGAS MGAS present
and MGAS
communicates the
OpenGasCircuit
alarm for 40
seconds.
Replace D-Fend. See Airway Module TRM for further Troubleshooting.
MGAS SENSOR
INOP > XX
Module fail. No CO2,
AA, O2 data
Airway Module
communicates a hardware
failure. (RAM failure; ROM
checksum error; Error in
CPU EEPROM; Error O2
preamp EEPROM; Error in
SSS board EEPROM;
Voltage error; Lamp control
failure.) or UPI does not
initialize.
Medium MGAS
See Airway Module TRM for further Troubleshooting.
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7-36 2076163-001 03 17
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
MODULE NOT
COMPATIBLE
Module not compatible The Monitoring Module
detected is not compatible
with system software. See
Section 1.4 for a list of
compatible airway modules.
Low DC
Replace Airway Module with compatible module.
N2O FLOW > 100
ML/MIN
N2O flow in Aux Gas
mode
N2O flow > 100 ml/min at
Aux Outlet
Medium DC System in
Auxiliary Gas
Delivery mode
Perform "Zero Mixer Flow Sensors" in Service Mode.Check/Replace N2O solenoid valve.
Check/Replace N2O flow sensor. Check/Replace FIB.
N2O FRESH GAS
FLOW SENSOR
FAIL
Gas controls failure, O2
only
FIB reports a N2O Fresh
Gas Flow Sensor Fail alarm
to ACB
Medium AC, FIB System equipped
with N2O fresh
gas and initial
communications is
established
between ACB and
FIB.
Reboot system. If problem continues, check N2O fresh gas flow sensor signal in Service
Mode. Replace N2O fresh gas flow sensor.
N2O PIPE INVALID Cannot monitor N2O
pipeline
N2O Pipeline pressure is
invalid.
Medium DC
Check N2O Pipeline Supply. Check/Replace Cable connecting N2O Pipeline Pressure Sensor
Board to FIB. Check/Replace N2O Pipeline Pressure Sensor Board.
N2O PRESS LOW N2O supply pressure
low
N2O pipeline pressure is
less than 252 kPa and the
N2O cylinder pressure is
less than 2633 kPa.
Low AC N2O is selected
as the balance
gas with a non
zero flow of N2O.
Check N2O Supply.
Check / Replace N2O Pipeline/Cylinder Pressure Transducer.
N2O MIXER VALVE
FAIL
Gas controls failure, O2
only
N2O mixer valve feedback
current check failed
Medium AC, FIB System equipped
with N2O fresh
gas and initial
communications is
established
between ACB and
FIB.
Reboot system. If problem continues, check N2O mixer valve connection. Replace N2O mixer
valve.
NO INSPIRATORY
FLOW SENSOR
No insp flow sensor No inspiratory sensor
connected and not
calibrating.
Medium AC, SIB
Connect Expiratory flow sensor. Check/Replace Expiratory flow sensor. Check/Replace Pogo-
pin connector. Replace SIB Board.
7 Troubleshooting
03 17 2076163-001 7-37
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
NO EXPIRATORY
FLOW SENSOR
No exp flow sensor No Expiratory sensor
connected and not
calibrating
Medium AC, SIB
Connect Expiratory flow sensor. Check/Replace Expiratory flow sensor. Check/Replace Pogo-
pin connector. Replace SIB Board.
O2 BYPASS VALVE
FAIL
Gas controls failure, O2
only
O2 bypass valve feedback
current check failed
Medium AC, FIB
Reboot system. If problem continues, check O2 bypass valve connection. Replace the O2
Bypass valve if defective.
O2 CAL ERROR Calibrate O2 sensor Offset, slope, or cell voltage
not in range or O2 > 110%
Low AC, SIB An O2 cell is
connected.
Calibrate O2 Sensor.
If calibration fails, replace O2 Sensor.
If calibration continues to fail, wait 90 minutes and repeat calibration.
If calibration fails after 90 minute, replace SIB.
O2 FLOW <
150ML/MIN
O2 flow low O2 flow < 150 ml/min in
Therapy state
Low DC System in Therapy
state
Increase O2 flow. Perform "Zero Mixer Flow Sensors" in Service Mode. Check/Replace O2
latching valve. Check/Replace O2 flow sensor.
O2 FLUSH FAILURE O2 flush stuck on? The O2 Flush Switch is
detected “on” continuously >
30 sec.
Low AC
Check/Replace O2 flush valve. Check/Replace O2 flush pressure switch.
O2 FRESH GAS
FLOW SENSOR
FAIL
Gas controls failure, O2
only
FIB reports an O2 Fresh Gas
Flow Sensor Fail alarm to
ACB.
Medium AC, FIB Initial
communications is
established
between ACB and
FIB.
Reboot system. If problem continues, check O2 fresh gas flow sensor signal in Service Mode.
Replace the flow sensor if defective.
O2 LATCHING
VALVE FAIL
System Malfunction O2 latching valve feedback
current check failed.
High AC Initial
communications is
established
between the
Anesthesia
Computer and the
FIB.
Check O2 Latching Valve connection. If problem continues, replace O2 Latching Valve. If
problem continues, replace Frame Interface Board.
O2 PIPE INVALID Cannot monitor O2
pipeline
O2 Pipeline pressure is
invalid.
Medium DC
Check O2 pipeline supply. Check/Replace cable connecting O2 Pipeline Pressure Sensor
Board to FIB. Check/Replace O2 Pipeline Pressure Sensor Board.
Carestation 620/650/650c (A1/A2)
7-38 2076163-001 03 17
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
O2 PRESS LOW O2 supply pressure low O2 pipeline pressure is less
than 252 kPa and the O2
cylinderhas a pressure less
than 2633 kPa for one
second.
High AC
Check O2 Supply. Check/Replace O2 Pipeline Pressure Sensor Board/Cylinder Pressure
Transducer.
O2 SENSOR
FAILURE
Replace O2 sensor O2 < 5% Low AC, SIB An O2 sensor is
connected.
Calibrate O2 Sensor.
If calibration fails, replace O2 Sensor.
If calibration continues to fail, wait 90 minutes and repeat calibration.
If calibration fails after 90 minute, replace SIB.
ON/STANDBY
SWITCH TO
STANDBY
Confirm to shutdown On/Standby switch activated High PC System state is
Therapy and
Power Controller
is communicating
with the Display
Computer.
No service action required.
PATIENT VOLUME
MISMATCH
OCCURRED
Calibrate, dry, or replace
flow sensors
PATIENT VOLUME
MISMATCH alarm occurred.
Low AC, DC
checks
enable
criteria
System state is in
Checkout.
Check flow sensor connections.
Replace flow sensors.
Check the SIB tubing for moisture.
Replace SIB.
PAW
OVERPRESSURE
SIGNAL
DISCONNECTED
Vent fail. Monitoring only The SIB reports a PAW
Overpressure Signal
Disconnected alarm to the
ACB.
Medium
(Vent
mode)
or Low
(Bag
mode)
AC, SIB Initial
communications is
established
between ACB and
SIB.
Check connection between SIB and ACB.
PEEP PCV NOT
AVAILABLE
Vol vent only. No PEEP
or PSV
Paw data is in range but the
Pmanifold <= -15 cmH2O
Medium
or Low
AC
Perform flow sensor calibration. If calibration fails, use the Service Application under “Vent
Flow and Pressure” (Section 12.8.2), to check the transducer precision. Use the Flow valve
control to compare linearity of the Manifold transducer to the Paw transducer.
PORT PLUG POST
FAIL
Vent fail. Monitoring only Paw > 100 cmH2O for 1
second in POST state
Medium AC In-range Paw data
available
Remove occlusion from Inspiratory port.
7 Troubleshooting
03 17 2076163-001 7-39
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
POWER
CONTROLER COM
FAIL
Internal failure. System
may shut down
Communications with PC
and DC cannot be
established for ten seconds.
Medium DC
Reboot system. If problem continues: 1. Check DU cable connections. 2. Check the ACB
cable connections. 3. Replace the Power Management Board.
POWER
CONTROLLER
SELF TEST
Internal failure.
Systemmay shut down
Power Controller fails self
tests.
High PC
Replace Power Management Board.
POWER SUPPLY
BUCK > 75C
Circuitry >75C shutdown
possible
Power supply temperature
exceeds 75C.
Medium PC
Check /Clean cooling fan.
POWER SUPPLY
BOOST > 75C
Circuitry >75C shutdown
possible
Power supply temperature
near to boost converter
exceeds 75C
Low PC
Check /Clean cooling fan.
PWR CNTRL DC-
DC BUCK FAIL
No battery backup Battery not connected or
buck converter failure.
Medium PC Communication
between the
Power Controller
and the Display
Computer is
established
Check Battery Connections. Check the battery charge circuit in Service Software. Replace
Power Management Board.
PWR CNTRL DC-
DC BOOST FAIL
Internal failure.
Systemmay shut down
Boost converter failure Medium PC AC Main is
available and AC-
DC Module is
good
Check/Replace Power Management Board.
PWR CNTRL
OUTPUT ERROR
SWITCHES AC
MAIN TO BACKUP
POWER
Power switched to
Battery
Output power from PMB
reports over/under voltage
condition and the power
supply switches from AC
Mains to backup power.
Medium PC System is
connected to AC
Mains and the
communication
between the
Power Controller
and the Display
Computer is
established.
Replace AC-DC Module.Replace Power Management Board.
Carestation 620/650/650c (A1/A2)
7-40 2076163-001 03 17
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
PWR CNTRL SPL1
CHANNEL ERROR
System Malfunction For more than three times on
output power from SPL
channel 1:Current > 0.5
ampsor Voltage > 13.2
VorVoltage < 12.1 V
High PC Communication
between the
Power Controller
and the Display
Computer is
established.
Reboot System. If problem continues, check/replace ACB. Replace Power Management
Board.
PWR CNTRL SPL2
CHANNEL ERROR
Vent fail. Monitoring only For more than three times on
output power from SPL
channel 2:Current > 0.85
ampsor Voltage > 13.2
VorVoltage < 12.1 V
High PC Communication
between the
Power Controller
and the Display
Computer is
established.
Reboot System. If problem continues, check for short circuit of Flow Valve/Gas Inlet Valve.
Check/Replace Power Management Board.
PWR CNTRL SPL3
CHANNEL ERROR
No data. Ventilator
failure
For more than three times on
output power from SPL
channel 3:Current > 0.62
ampsor Voltage > 13.2
VorVoltage < 12.1 V
High PC Communication
between the
Power Controller
and the Display
Computer is
established.
Reboot System. If problem continues, check/replace SIB.
Check/Replace Power Management Board.
PWR CNTRL SPL4
CHANNEL ERROR
Gas controls failure, O2
only
For more than three times on
output power from SPL
channel 4:Current > 1.3
ampsor Voltage > 13.2
VorVoltage < 12.1 V
Medium PC Communication
between the
Power Controller
and the Display
Computer is
established.
Reboot System. If problem continues, check/replace FIB.
Check/Replace Power Management Board.
PWR CNTRL SPL5
CHANNEL ERROR
Gas controls failure, O2
only
For more than three times on
output power from SPL
channel 5:Current > 0.7
ampsor Voltage > 13.2
VorVoltage < 12.1 V
Medium PC Communication
between the
Power Controller
and the Display
Computer is
established.
Reboot System. If problem continues, check for short circuit of Mixer Valves.
Check/Replace Power Management Board.
7 Troubleshooting
03 17 2076163-001 7-41
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
PWR CNTRL SPL6
CHANNEL ERROR
Gas monitoring not
available
For more than three times on
output power from SPL
channel 6:Current > 0.7
ampsor Voltage > 13.2
VorVoltage < 12.1 V
Medium PC Communication
between the
Power Controller
and the Display
Computer is
established
Reboot System. If problem continues, check Airway Module. Replace Power Management
Board.
REVERSE
EXPIRATORY
FLOW
Reverse exp flow.
Check valves OK?
Flow towards the patient
(volume >= 20 mL) on
expiratory sensor and flow
towards the patient (volume
>= 5 mL) on the inspiratory
sensor during inspiration for
6 consecutive mechanical
breaths.
Medium AC, SIB In-range flow data
available,
mechanical
ventilation on
Check flow sensor connections for “No Flow Sensor” alarm.
Check the breathing circuit.
Perform flow sensor calibration.
Check Insp/Exp check valves.
Replace the flow sensors.
Check for kinked SIB tubing.
Check the SIB cabling.
SIB +5VA FAIL No data. Ventilator
failure
VSIB +5VA < 4.85 VDC or
VSIB +5VA > 5.15 VDC
High AC, DC SIB +12.5 V (10
VA) value is
between 12.125 V
and 13.125 V.
Reboot System. If problem continues, replace the SIB.
SIB +5VD FAIL No data. Ventilator
failure
VSIB +5VD < 4.85 VDC or
VSIB +5VD > 5.15 VDC
High AC, DC SIB +12.5 V (10
VA) value is
between 12.125 V
and 13.125 V.
Reboot System. If problem continues, replace the SIB.
SIB +5VE2 FAIL No data. Ventilator
failure
SIB +5VE2 Voltage < 4.85
Vdc or > 5.15 Vdc
High AC, DC SIB +12.5 V (10
VA) value is
between 12.125 V
and 13.125 V.
Reboot System. If problem continues, replace the SIB.
STANDBY PATIENT
DETECTION
No fresh gas flow! 3 volume breaths are
detected within 30 seconds
or 3 CO2 breaths are
detected within 30 seconds.
High DC System in
Checkout: General
or Checkout: Start
Case
No service action required.
Carestation 620/650/650c (A1/A2)
7-42 2076163-001 03 17
Error Log Entry Alarm Text Condition (Basic info) Priority Source Enabling Criteria
Action/Troubleshooting
TOUCHSCREEN
FAILURE
Touchscreen Failure Touch panel controller fails to
send a life tick for more than
10 seconds
Medium DC
Reboot system. If problem continues:
Replace the Touch Controller board.
Replace the LCD Touch Bezel assembly.
VENT AIRWAY
OVERPRESS
SIGNAL
Inspiration stopped High airway overpressure
signal is set.
Medium AC, SIBMechanical
ventilation is on.
No Service Action.
Reboot system. If problem continues, check Airway Pressure signal in Service Mode.
VENT AIRWAY
OVERPRESS
SIGNAL FAIL
Vent fail. Monitoring only Ventilator SIB indicates the
High Airway overpressure
signal was set and Paw < 90
cmH2O and Pmanifold < 80
cmH2O
Medium AC, SIB Mechanical
Ventilation is On.
No Service Action required. Reboot system. If problem continues, check Airway Pressure
signal in Service Mode.
VENT FLOW VALVE
FAIL CURRENT
Vent fail. Monitoring only Current feedback check
failed
Medium AC, SIB
Reboot system. If problem continues, in Service Application under Vent Flow and Pressure
(See "12.9.2 Vent Subsystem - Vent Flow and Pressure"), increase the Flow Valve counts,
view the Flow Valve Current mA and Counts. Verify the settings match.
VENT FLOW VALVE
FAIL DAC
Vent fail. Monitoring only Incorrect DAC feedback
check failed
Medium AC, SIB
Reboot system. If problem continues, in Service Application under Vent Flow and Pressure
(See "12.9.2 Vent Subsystem - Vent Flow and Pressure"), increase the Flow Valve counts,
view the Flow Valve Feedback mV and Counts. Verify the settings match.
VENT SUSTAINED
PAW SDOWN
Ventilate manually! Paw > 100 cmH2O for 10
seconds
Medium AC, SIB In-range Paw data
is available
No Service Action. Reboot system. If problem continues, check Airway Pressure signal in
Service Mode.
7 Troubleshooting
03 17 2076163-001 7-43
7.10 SIB Pneumatic Sense Tubing Leak Test
1. Access Gas Delivery Schematic in the PC Service Application.
2. Adjust the fresh gas flow to 2 l/min.
3. Perform the following:
• Open the APL valve (0 cmH2O).
• Set the Bag/Vent switch to Bag mode.
• Connect a short tube between the inspiratory and expiratory ports.
4. On the Vent Subsystem menu, select “Vent Flow and Pressure”.
• The airway pressure should read near zero.
• The Inspiratory Flow and Expiratory Flow should read near zero
(between +0.5 and -0.5 l/min flows).
5. Occlude the bag port. Adjust the APL to read approximately 10 cmH2O
on the Airway Pressure readout. The flows may jump briefly, but should
stabilize to read between +0.5 and -0.5 l/min.
If either sensor reads more than 2 l/min, STOP. This indicates a
possible leak in the flow sensor pneumatic circuit. Skip steps 3,
go directly to step 4. If the pressure is increased further, the SIB
may be damaged.
--
6. Adjust the APL to read 20 cmH2O on the Airway Pressure readout. The
flows may jump briefly, but should stabilize to read between +0.5 and
-0.5 l/min.
7. Adjust the APL to read 40 cmH2O on the Airway Pressure readout. The
flows may jump briefly, but should stabilize to read between +0.5 and
-0.5 l/min.
8. If the flow measurements on the PC Service Application stay near zero,
the sense lines are leak free. If either sensor indicates a flow, there may
be a leak. Note which sensor channel indicates flow (fails the leak test).
To troubleshoot, inspect for kinks and purge the pneumatic lines between
flow sensor and the SIB, then repeat the above tests. If problem continues,
replace the SIB or the flow sensor.
CAUTION
Carestation 620/650/650c (A1/A2)
7-44 2076163-001 03 17
7.11 Flow sensor accuracy test
The flow test device used in the following procedure must have an accuracy
to ± 2.5% or better (see "10.1.2 Test devices"). Ensure the test device is set
to measure appropriate drive gas (Air or O2).
This procedure checks the raw velocity measurement made by the flow
sensor; therefore, any error inherent in the conversion to volume is
eliminated. This is true for both the ventilator flow sensors and the test
device.
1. Turn on the system.
2. Enter Super User Mode, select Parameters Settings, set Vent and
Airway Gas Module TV Basis to ATPD-ATPD.
3. Turn off the vaporizer(s).
4. Access Service Mode and perform the Mixer Flow Sensor Zero
calibration.
5. Remove the bellows housing.
6. Remove and set aside the bellows assembly and the pressure relief
(pop-off) valve.
7. Reinstall the bellows housing.
8. Unlatch the canister latch and remove the canister.
9. Remove the breathing circuit module from the breathing system.
10. Remove the O-ring of the expiratory flow sensor near the expiratory
check valve.
11. Reinstall the breathing circuit module to the breathing system.
12. Remove the Airway Gas Module (if equipped).
13. Connect the inspiratory port and expiratory port with a tube.
14. Connect a flow test device (400 Series TSI flow sensor) in line with the
expiratory port.
15. Set the Bag/Vent switch to Vent.
16. Connect and establish communication with the PC Service Application.
17. Go to the Gas Delivery Schematic screen, set the four solenoid valves
(Mixer Air Solenoid Valve, Mixer N2O Solenoid Valve, O2 Bypass
Solenoid Valve, O2 Latching Valve) to Off.
18. Go to the Vent Schematic screen and adjust the Inspiratory Flow Valve
to the following settings:
• Set the Gas Inlet Valve to On.
• Adjust the Inspiratory Flow Valve value to get flows of 5 l/min, 10 l/
min, 20 l/min, 30 l/min, and 50 l/min on the test device.
19. At each flow, record the absolute value of the Inspiratory and Expiratory
flow sensors on the Vent Schematic screen.
(Inspiratory and Expiratory flows will have different signs (+ and -); these
are flow direction indicators only.)
The flow sensor readings should be within the range listed as below:
7 Troubleshooting
03 17 2076163-001 7-45
Air or O2 Drive Gas
Test Device
Reading (l/
min)
Insp Flow
Sensor Min (l/
min)
Insp Flow
Sensor Max (l/
min)
Exp Flow
Sensor Min (l/
min)
Exp Flow
Sensor Max (l/
min)
5 3.9 5.37 3.89 5.27
10 7.79 10.74 7.79 10.54
20 15.59 21.47 15.57 21.08
30 23.38 32.21 23.36 31.61
50 38.97 53.68 38.93 52.69
Carestation 620/650/650c (A1/A2)
7-46 2076163-001 03 17
8 Software Download
Software Download
In this section
8.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8.1.1 Main Menu and System Information. . . . . . . . . . . . . . . . . 8-2
8.2 Software Download. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
8.2.1 Download process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
8.2.2 Download complete. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
8.3 Software compatibility check. . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
03 17 2076163-001 8-1
8.1 Overview
This section covers the functions of the USB Media used to download system
software to the machine.
To run the application:
• Make sure the system is turned off.
• Insert the USB Media into the open (right-hand) USB port of the Display
Unit.
• Turn on the system. The application will load and display the Main Menu
along with the System Information page.
8.1.1 Main Menu and System Information
The Main Menu appears on the left-hand side of the screen and the System
Information appears on the right-hand side of the screen and displays the
system information as shown below:
Software Loader for Carestation 620/650/650c, Ver X.XX (Date)(Time)
Main Menu
Software Download
...
Carestation 650/650c/620 System Information
Currently Installed
 Subsystem HW Rev Serial # SW Ver BootVer
Front Panel Cntl XXXX/A/XX ABCXXXXX XX.XX XXbXX
Power Mgt Board XXXX/A/XX ABCXXXXX XX.XX XXbXX
Anes Control Bd XXXX/A/XX ABCXXXXX XX.XX XXbXX
Sensor Intf. Bd XXXX/A/XX ABCXXXXX XX.XX XXbXX
Frame Intf. Bd XXXX/A/XX ABCXXXXX XX.XX XXbXX
Dsply Unit BIOS XXXX/A/XX ABCXXXXX XX.XX n/a
Dsply Unit App XXXX/A/XX ABCXXXXX XX.XX n/a
AC
.2
4.
01
5
The system information includes Hardware revision, serial number, software
version and Boot version.
If a subsystem is not communicating, the message "Not communicating" will
be shown instead of the information fields.
If the system is running on battery power instead of AC power, the warningmessage "Running on battery" will be displayed in the bottom row of the
Menu area on the left side of the screen.
Carestation 620/650/650c (A1/A2)
8-2 2076163-001 03 17
8.2 Software Download
Use the ComWheel to select Software Download to bring up the Software
Download menu.
Software Download Remarks
Download New Downloads only new software versions not found on the
system and compatible with installed subsystem
hardware.
Download All Downloads all software subsystems.
Since downloading all the subsystem software can take up to 30 minutes,
you should normally choose “Download New” to install only the updated
subsystem software or software required for newly installed subsystems.
 
Software Loader for Carestation 620/650/650c, Ver X.XX (Date)(Time)
Software Download
Download New
Loading Carestation 620/650/650c Product Software Version XX.XX
Installed
 Subsystem HW Rev SW Ver SW Ver Status
Front Panel Cntl XXXX/A/XX XX.XX XX.XX Xxxxxx
Power Mgt Board XXXX/A/XX XX.XX XX.XX Xxxxxx 
Anes Control Bd XXXX/A/XX XX.XX XX.XX Xxxxxx
Sensor Intf. Bd XXXX/A/XX XX.XX XX.XX Xxxxxx
Frame Intf. Bd XXXX/A/XX XX.XX XX.XX Xxxxxx 
Dsply Unit BIOS XXXX/A/XX XX.XX XX.XX Xxxxxx 
Dsply Unit App XXXX/A/XX XX.XX XX.XX Xxxxxx
AC
.2
4.
01
6
Download All
New
ModBus Controllr n/a XX.XX XX.XX Xxxxxx
Dsply Unit FontC n/a XX.XX XX.XX Xxxxxx
Dsply Unit FontJ n/a XX.XX XX.XX Xxxxxx
 
Whenever a Software Download is completed, a software compatibility table
is written to internal media. This file is used by the DU application software to
ensure that the system remains in an approved configuration when the
application software is started.
To ensure that all software versions on the system are compatible, the end
result of “Download All” or “Download New” will be the same. The software
loaded on the machine will exactly match what is on the USB Media. Be sure
to have the latest/correct version of software before attempting a download to
avoid inadvertent overwrites of newer software with an older version.
If, during the “Download New” process, the compatibility checker detects a
newer version of software component on the system, a “Notice” appears on
the screen that asks you to confirm the downgrade.
“Download All” will download all compatible software from the USB media to
the system. If the compatibility checker detects a newer version of software
component on the system, a “Notice” appears on the screen that asks you to
confirm the downgrade.
Note
8 Software Download
03 17 2076163-001 8-3
8.2.1 Download process
The USB Media includes only the latest software for each subsystem.
As each subsystem software segment is being downloaded, the following
status messages note the state of each subsystem and the result of the
download:
Message Description
Waiting Attempting to establish communications with the subsystem.
No Comms Communications with the subsystem have not been established.
In App System is running its application code; not ready for download.
Ready System is in its boot code; ready for download.
Loading System is accepting download data.
Done Software download has completed successfully.
Skipped Software download was bypassed.
Fail Software download did not complete successfully. A “Fail”
message will require reloading of the software; or repair of the
system may be necessary.
If the subsystem is communicating but the HW Rev or current SW Rev are
not known, dashes will appear for those values.
8.2.2 Download complete
When all the required subsystem software is downloaded, you must shut
down the system to exit the download function.
After powering down the system, be sure to wait at least 20 seconds before
restarting the system.
Note
Carestation 620/650/650c (A1/A2)
8-4 2076163-001 03 17
8.3 Software compatibility check
If Software Download detects an incompatible subsystem, an error message
noting the incompatible subsystem is displayed.
ERROR!! INCOMPATIBLE SOFTWARE.
The software version on the USB Media is notcompatible with the installed XXX
subsystem.
Installed part #: (Stock Number) (Rev X), swver XX.XX
USB Media part #: (Stock Number) (Rev X), swver XX.XX
8 Software Download
03 17 2076163-001 8-5
8-6 2076163-001 03 17
9 Repair Procedures
Repair Procedures
In this section
9.1 Safety information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-5
9.2 Circuit board replacement precautions. . . . . . . . . . . . . . . . . . . 9-7
9.3 KEY/BID label (Key Code). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9
9.4 How to bleed gas pressure from the machine. . . . . . . . . . . . . 9-10
9.5 How to remove the rear panels. . . . . . . . . . . . . . . . . . . . . . . . 9-11
9.5.1 How to remove the cylinder cover. . . . . . . . . . . . . . . . . . 9-11
9.5.2 How to remove the rear upper panel. . . . . . . . . . . . . . . .9-11
9.5.3 How to remove the rear lower panel. . . . . . . . . . . . . . . . 9-12
9.6 How to remove the tabletop. . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13
9.7 How to remove the top shelf. . . . . . . . . . . . . . . . . . . . . . . . . . .9-14
9.8 Servicing the power components. . . . . . . . . . . . . . . . . . . . . . . 9-15
9.8.1 Replacing the PMB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15
9.8.2 Replacing the universal AC-DC power supply board. . . 9-16
9.8.3 Replacing the batteries. . . . . . . . . . . . . . . . . . . . . . . . . . 9-18
9.8.4 Replacing the fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-19
9.8.5 Replacing the fuse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-20
9.9 Replacing the ACB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22
9.10 Replacing the FIB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-24
9.11 Replacing the SIB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25
9.11.1 Replacing the SIB filters and rubber ports. . . . . . . . . . 9-26
03 17 2076163-001 9-1
9.12 Servicing the Vent Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . 9-28
9.12.1 Removing the Vent Engine. . . . . . . . . . . . . . . . . . . . . . 9-28
9.12.2 Servicing the Vent Engine components. . . . . . . . . . . . 9-29
9.12.3 Replacing Gas Inlet Valve components. . . . . . . . . . . . 9-32
9.13 Servicing the pipeline inlet manifold components. . . . . . . . . 9-33
9.13.1 Replacing pipeline inlet filter. . . . . . . . . . . . . . . . . . . . . 9-33
9.13.2 Replacing pipeline inlet check valve. . . . . . . . . . . . . . . 9-33
9.13.3 Replacing the pipeline inlet manifold. . . . . . . . . . . . . . .9-34
9.13.4 Replacing the pipeline gas-supply pressure transducers. .
9-35
9.14 Servicing the cylinder supply modules. . . . . . . . . . . . . . . . . . 9-37
9.14.1 Replacing the primary regulator module. . . . . . . . . . . . 9-37
9.14.2 Replacing the cylinder inlet filter. . . . . . . . . . . . . . . . . . 9-38
9.14.3 Replacing the cylinder check valve. . . . . . . . . . . . . . . . 9-38
9.15 Replacing the O2 flush valve. . . . . . . . . . . . . . . . . . . . . . . . . 9-39
9.16 Servicing the breathing system components. . . . . . . . . . . . . 9-40
9.16.1 Replacing the inspiratory/expiratory ports. . . . . . . . . . .9-41
9.16.2 Replacing the Bag/Vent switch and the CO2 bypass. . 9-42
9.16.3 Replacing the APL valve. . . . . . . . . . . . . . . . . . . . . . . . 9-44
9.16.4 Replacing the flow sensors. . . . . . . . . . . . . . . . . . . . . . 9-45
9.16.5 Replacing the inspiratory/expiratory check valve.. . . . 9-45
9.16.6 Replacing the canister holder. . . . . . . . . . . . . . . . . . . . 9-46
9.16.7 Servicing the bellows assembly. . . . . . . . . . . . . . . . . . 9-48
9.17 Replacing the bag arm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-51
9.18 Servicing the gas control components. . . . . . . . . . . . . . . . . . 9-52
9.18.1 Replacing the secondary regulator manifold or balance
regulator manifold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-52
9.18.2 Replacing the O2 or N2O needle valve (on machines with
N2O). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-53
9.18.3 Replacing an Air needle valve on all machines or an O2
needle valve on machines without N2O. . . . . . . . . . . . . . . . . .9-55
9.18.4 Replacing the Link - 25 assembly. . . . . . . . . . . . . . . . . 9-56
9.19 Servicing vaporizer manifold parts. . . . . . . . . . . . . . . . . . . . . 9-57
9.19.1 Repairing manifold port valve. . . . . . . . . . . . . . . . . . . . 9-57
Carestation 620/650/650c (A1/A2)
9-2 2076163-001 03 17
9.19.2 Checkout procedure for manifold port valve. . . . . . . . . 9-58
9.19.3 Replacing the vaporizer manifold. . . . . . . . . . . . . . . . . 9-59
9.20 Replacing the auxiliary O2 flowmeter. . . . . . . . . . . . . . . . . . .9-61
9.21 Replacing the suction regulator. . . . . . . . . . . . . . . . . . . . . . . 9-62
9.22 Replacing the On/Standby switch. . . . . . . . . . . . . . . . . . . . . 9-64
9.23 Servicing the ACGO module. . . . . . . . . . . . . . . . . . . . . . . . . 9-66
9.23.1 Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-66
9.23.2 Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-68
9.23.3 Test procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-69
9.24 Servicing the AGSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-70
9.24.1 Servicing the scavenger positive relief valve (for machines
with Passive AGSS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-70
9.24.2 Servicing the Active AGSS. . . . . . . . . . . . . . . . . . . . . . 9-70
9.25 Servicing the task lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-72
9.25.1 Replacing the left top task light. . . . . . . . . . . . . . . . . . . 9-72
9.25.2 Replacing the central vaporizer task light. . . . . . . . . . . 9-73
9.25.3 Servicing the right top task light assembly. . . . . . . . . . 9-73
9.25.4 Replacing the bottom task light. . . . . . . . . . . . . . . . . . . 9-74
9.26 Replacing the casters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-76
9.26.1 Replacing the casters (without central brake). . . . . . . .9-76
9.26.2 Replacing the front casters (with central brake). . . . . . 9-77
9.27 Servicing the display unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-81
9.27.1 Disassembling the DU. . . . . . . . . . . . . . . . . . . . . . . . . . 9-82
9.27.2 Replacing the Carrier board and Com Express board
assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-83
9.27.3 Replacing the front assembly (including LCD/Touch Bezel
assembly). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-84
9.27.4 Replacing the CPU “coin” battery. . . . . . . . . . . . . . . . . 9-85
9.27.5 Replacing the encoder. . . . . . . . . . . . . . . . . . . . . . . . . .9-86
9.27.6 Replacing the speaker. . . . . . . . . . . . . . . . . . . . . . . . . .9-86
9.28 Replacing the display unit cables. . . . . . . . . . . . . . . . . . . . . .9-88
9.29 Replacing the display arm. . . . . . . . . . . . . . . . . . . . . . . . . . . 9-89
9.30 Display arm adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-91
9.31 Replacing the transformer. . . . . . . . . . . . . . . . . . . . . . . . . . . 9-94
9 Repair Procedures
03 17 2076163-001 9-3
9.31.1 Replacing the transformer (for machines with drawers). . 9-
94
9.31.2 Replacing the transformer (for machines without drawers)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-96
9.32 Replacing the Tec 7 filler cap or filler cap O-ring. . . . . . . . . . 9-99
Carestation 620/650/650c (A1/A2)
9-4 2076163-001 03 17
9.1 Safety information
To prevent fires:
• Use lubricants approved for anesthesia or O2 equipment,
such as Krytox.
• Do not use lubricants that contain oil or grease; they burn or
explode in high O2 concentrations.
• All covers used on the system must be made from antistatic
(conductive) materials. Static electricity can cause fires.
• Obey infection control and safety procedures. Used
equipment may contain blood and body fluids.
• A movable part or a removable component may present a
pinch or a crush hazard. Use care when moving or replacing
system parts and components.
• Before servicing the system, disconnect the power cord from
the AC mains supply. The detachable power cord is the
means for isolating the system’s circuits from the supply
mains on all poles simultaneously.
• Some internal parts have sharp edges and can cause cuts
or abrasions. Use care when servicing internal components.
• Replace damaged parts with components manufactured or
sold by GE Healthcare. Then test the unit to ascertain that it
complies with the manufacturers’s published specifications.
• After repairs are completed, always perform the checkout
procedure. Refer to Section 3 of this manual.
• Do not use the brake while moving the anesthesia system.
This could cause the machine to tip over. Only use the brake
to keep the system in place.
• Maintain system balance. When using rails or dovetails,
distribute equipment on each side of the system. Uneven
system balance could cause the system to tip.
• For service of a pendant or wall mounting Carestation 650c
machine, all extra load attached to the Carestation 650c, for
example, monitors, accessories, etc., must be removed from
top shelf, tabletop, drawers and sides of the Carestation
650c before removing the machine from the pendant or wall-
mounting bracket.
WARNING
WARNING
9 Repair Procedures
03 17 2076163-001 9-5
Electrostatic discharge through circuit boards may damage the
components on them. Wear a static control wrist strap before
touching the circuit boards. Handle all circuit boards by their
non-conductive edges. Use antistatic containers when
transporting them.
Connections should not be made to the electrostatic sensitive
parts unless ESD precautionary procedures are followed.
WARNING
Carestation 620/650/650c (A1/A2)
9-6 2076163-001 03 17
9.2 Circuit board replacement precautions
The Carestation 620/650/650c (A1/A2) anesthesia system has processors on
several boards. On three of these boards, information such as the machine
serial number and optional ventilation modes (such as PCV, SIMV, and
PSVPro) are stored redundantly.
During power-up, the machine serial number and installed options
information stored on the boards are compared. If one board differs,
information from the two agreeing boards will be written to the new board. If
three boards differ (in the case of two boards replaced) the system defaults
to “NO OPTIONS” and default machine serial number of Carestation 620
(A1/A2).
To retain the installed options, install only one replacement board at a time.
If multiple boards are to be installed, turn off the system, install the first
board, load software on the new board, and power-up the machine in normal
mode. Repeat this procedure for each board installation.
The following table lists the actions required after replacing printed circuit
boards:
Board Name (Short Name) Required Action After Installation
Display Unit Carrier Board
and Com Express Assembly
Load Software (see Note below).
Check / Re-Configure Machine Configurations.
Most user configuration settings are stored on the
Compact Flash card and are retained whenthe CF
card is transferred to the new board assembly.
Preoperative Checkout.
Anesthesia Computer Board
(ACB)
Load Software. Check / Re-Configure Machine
Configurations. User Calibrations (O2 Cell, Flow
Sensor, etc.). All Ventilator Calibrations (see "5.6
Ventilator calibrations"). Preoperative Checkout.
Power Management Board
(PMB)
Load Software. Preoperative Checkout.
Frame Interface Board (FIB) Load Software. User Calibrations (Flow meter, Flow
Sensor, etc.). All Ventilator Calibrations (see "5.6
Ventilator calibrations"). Preoperative Checkout.
Sensor Interface Board (SIB) Load Software. User Calibrations (O2 Cell, Flow
Sensor, etc.). Paw Span (or Paw and ACGO Span)
calibration. Preoperative Checkout.
Pipeline pressure sensor
board
Zero Gas Transducers. Preoperative Checkout.
All others Preoperative Checkout.
9 Repair Procedures
03 17 2076163-001 9-7
Board Name (Short Name) Required Action After Installation
Notes:
Flash software starts loading immediately when the Download Application first boots.
Do not interrupt the Flash download. Allow the download to complete before
proceeding.
If the whole Display Unit is replaced, need to affix the new Key Code and Board ID
Label to the Display Unit.
If the CF card is replaced, the Key Code in the software system returns to the default
one that do not include any optional features. To configure the system to include the
purchased features, access the Options menu and input the options Key Code (see
the Key/BID label on the Display Unit for the Key Code).
Carestation 620/650/650c (A1/A2)
9-8 2076163-001 03 17
9.3 KEY/BID label (Key Code)
The “Control Board” reference is to the “Carrier Board and Com Express
Assembly” in the Display Unit.
The Key/BID label is located on the back of the Display Unit rear housing.
The KEY/BID code on the replacement Display Unit is appropriate for
machines that do not include any optional features. If the serviced machine
included optional features, access the Key Code Generator web site to
obtain the appropriate optional features Key Code.
Follow below steps to obtain the Key Code:
1. Gather the following information (* denotes Required Information):
Requestor Information
* Email Address
* Full Name
* Organization
End User Information
Hospital Name
Address 1
Address 2
City
Postal Code
Country
Telephone
Information from the EXISTING Control Board being REMOVED
* Control Board ID number
* Control Board Key Code
Information from the REPLACEMENT Control Board being INSTALLED
* Control Board ID Number
2. Access the Key Code Generator on the following web site.
http://www.docodes.com
3. Enter the required information and Submit the Request.
An e-mail with the replacement Control Board Key Code will be
immediately sent to the e-mail address provided (due to delays in some
firewalls and internet traffic, responses can take up to 24 hours to
receive).
Note
9 Repair Procedures
03 17 2076163-001 9-9
9.4 How to bleed gas pressure from the machine
Before disconnecting pneumatic fittings, bleed all gas pressure from the
machine.
1. Close all cylinder valves (if equipped) and disconnect all pipeline
supplies from the source except O2. If pipeline O2 is not available, open
the O2 cylinder valve.
If the machine includes N2O, do not disconnect the O2 pipeline, complete
step 2 first.
--
2. Turn on the system.
3. Turn the flow controls for all gases (except O2) at least one turn
counterclockwise.
4. Make sure that all cylinder and pipeline gauges read zero before
proceeding:
• For machines with N2O, disconnect the O2 pipeline supply from the
source (or close the O2 cylinder valve).
• Push the O2 flush button to bleed O2 from the system.
5. Turn off the system.
Note
Carestation 620/650/650c (A1/A2)
9-10 2076163-001 03 17
9.5 How to remove the rear panels
You must remove the rear upper panel to repair or replace many of the
machine’s components. To access the rear electronics enclosure, you must
remove the lower access panels.
Disconnect the power cord from the outlet receptacle before
removing any access panel to avoid shock hazard.
9.5.1 How to remove the cylinder cover
1. Bleed all gas pressure from the system.
2. Disconnect all pipeline connections.
3. Ensure that all cylinder and pipeline pressures read zero before
proceeding.
4. Disconnect the power cord from the AC mains supply.
5. Open the cylinder cover.
6. Remove the four screws (circled) that fasten the cylinder cover to the
rear lower panel.
AC
.2
4.
38
2
7. Remove the cylinder cover.
9.5.2 How to remove the rear upper panel
1. Bleed all gas pressure from the machine.
2. Disconnect all pipeline connections.
WARNING
9 Repair Procedures
03 17 2076163-001 9-11
3. Ensure that all cylinder and pipeline pressures read zero before
proceeding.
4. Disconnect the power cord from the AC mains supply.
5. Remove the cylinder cover (if equipped).
6. To remove the rear upper panel, first remove the four white screw
covers, then fully loosen the four screws that hold the panel in place.
Remove the panel by pulling straight back to disengage it from the
machine.
• If the machine includes integrated suction, disconnect the overflow
safety trap and, if present, the vacuum source.
9.5.3 How to remove the rear lower panel
1. Bleed all gas pressure from the machine.
2. Ensure that all cylinder and pipeline pressures read zero before
proceeding.
3. Disconnect the power cord from the AC mains supply.
4. Remove the cylinder cover and the cylinders (if equipped).
5. To remove the rear lower panel, first remove the four white screw
covers, then fully loosen the four screws that hold the panel in place.
Remove the panel by pulling straight back to disengage it from the
machine.
For machine equipped with AC outlets and transformer, disconnect the cable
connecting the AC outlet module to the transformer before fully removing the
panel.
--
Note
Carestation 620/650/650c (A1/A2)
9-12 2076163-001 03 17
9.6 How to remove the tabletop
1. Bleed all gas pressure from the machine.
2. Disconnect all pipeline connections.
3. Ensure that all cylinder and pipeline pressures read zero before
proceeding.
4. Disconnect the power cord from the AC mains supply.
5. Loosen the three screws (1) - one on the left side and two on the right
side along the outside of the pan assembly.
1
AC
.2
4.
21
1
6. Pull the tabletop forward to remove it from the middle pan.
9 Repair Procedures
03 17 2076163-001 9-13
9.7 How to remove the top shelf
To repair the flow control valves, top task lights and other components in the
top enclosure, you need to remove the top shelf first.
1. Bleed all gas pressure from the machine.
2. Disconnect all pipeline connections.
3. Ensure that all cylinder and pipeline pressures read zero before
proceeding.
4. Disconnect the power cord from the AC mains supply.
5. If present, remove the monitor mounted on the machine top shelf.
6. Remove the four screw covers (1) in the four corners.
1
AC
.2
4.
21
2
7. Remove the four screws that fasten the top shelf to the machine.
8. Remove the top shelf.
Carestation 620/650/650c (A1/A2)
9-14 2076163-001 03 17
9.8 Servicing the power components
Most of the power components are located in the middle pan, including the
power management board, backup batteries, fan and universal AC-DC power
supply. Perform the following steps to get access of these power
components:
1. Make sure the system is turned off.
2. Unplug the AC power cord.
3. Remove the tabletop. See "9.6 How to remove the tabletop panel".
4. Remove the lower rear panel. See "9.5.3 How to remove the rear lower
panel".
9.8.1 Replacing the PMB
The PMB is located underneath the ACB in the middle pan.
1. Disconnect the cables and harnesses connected to the ACB.
2. Loosen the eight screws (circled) that hold the cover plate (1) (under the
ACB) to the middle pan.
1
2
AC
.2
4.
21
3
3. Remove the ACB (2) together with the cover plate.
4. Disconnect the following cables and harnesses connected to the PMB(3):
9 Repair Procedures
03 17 2076163-001 9-15
3
AC
.2
4.
21
4
4
5
6 7
8
• the flat cable (4) (not shown here) from the ACB
• the harnesses (5) from the batteries
• the two harnesses (6) from the universal power supply board
• the flat cable (7) (not shown here) feeding power to the Display Unit
power cable connector
• the harness (8) from the fan
5. Unscrew the six screws holding the PMB to the middle pan.
6. Remove the PMB.
7. Replace the new PMB and assemble the machine in the reverse order.
8. Complete the required procedures after new board installation (see "9.2
Circuit board replacement precautions").
9.8.2 Replacing the universal AC-DC power supply board
1. Remove the six screws fixing the rear cover plate (1) of the electrical
power enclosure, then remove the plate.
AC
.2
4.
21
5
1
2. Remove the cover plate from the electrical power enclosure.
3. Remove the ACB together with the cover plate underneath it. See "9.8.1
Replacing the PMB" for details.
4. Disconnect the two power supply harnesses (2) from the PMB.
Carestation 620/650/650c (A1/A2)
9-16 2076163-001 03 17
AC
.2
4.
21
6
2
5. Disconnect the grounding harness (3) from the AC-DC power supply
board
8
7
6 5
AC
.2
4.
21
7
4
3
6. Disconnect the two power supply harnesses (4) from the universal AC-
DC power supply board (5).
7. Remove the two screws (8) that holds the universal AC-DC power
supply board mounting bracket (7) to the machine.
8. Pull the mounting bracket to the outside to detach the power supply
board module from its mounting place.
9. Loosen the screws (6) that holds the board to the mounting bracket,
remove the board.
10. Install the new AC-DC power supply board to the mounting bracket, and
transfer the two power supply harnesses to the new AC-DC power
supply board.
11. Reinstall the power supply board module and secure it with the two
mounting screws, and ensure that the power supply harnesses are
securely connected.
Make sure that the other side of the board is correctly seated in the
mounting slot before securing it with screws.
--
12. Reconnect the harnesses and cables.
13. Reassemble the machine.
14. Perform the checkout procedure.
Note
9 Repair Procedures
03 17 2076163-001 9-17
9.8.3 Replacing the batteries
The battery can only be changed or replaced by authorized
service personnel.
The batteries are located in the power enclosure in the middle pan, behind
the lower rear panel. Follow the below steps for replacement:
1. Turn off the system and unplug the AC power cord.
2. Remove the six screws fixing the rear cover plate (1) of the electrical
power enclosure, then remove the plate.
1
AC
.2
4.
21
8
3. Remove the six screws fixing the rear cover plate (1) of the electrical
power enclosure, then remove the plate.
4. Remove the black protection covers, then disconnect the four wires
connected to the batteries (2).
4
AC
.2
4.
21
9
3
2
5. Loosen the two mounting screws (3) that holds the battery retainer (4) to
the enclosure.
6. Remove the battery retainer by pulling straight back.
7. Remove the old batteries from the enclosure.
8. Set the new batteries into the enclosure.
DO NOT install the batteries up side down, which could damage the
batteries. When properly installed, the battery connectors should be at the
lower side.
--
9. Replace the battery retainer and secure it with the mounting screws.
10. Gently bend up the tabs on each battery, just enough for clearance to
install the harness.
CAUTION
Note
Carestation 620/650/650c (A1/A2)
9-18 2076163-001 03 17
11. Connect the wires from the PMB to the new installed batteries.
Make sure that each harness is connected to the proper connector and
battery.
Red to Red, Black to Black.
--
12. Stick the black protection covers onto the batteries to cover the
connector tabs.
AC
.2
4.
39
0
Make sure the connector tabs are well protected by the covers. Exposed
connectors may result in risk of short circuit and components damage.
--
13. Replace the plate and secure it to the battery retainer with the two
mounting screws.
14. Reassemble the machine in the reverse order.
15. Plug the AC power cord.
16. Turn on the system. Verify that the alarm No battery backup does not
occur.
17. Turn off the system.
18. Recycle the old batteries in same packaging according to local
requirements.
9.8.4 Replacing the fan
The fan is located under the ACB and PMB in the middle pan, to get access
of the fan, you need to remove the two boards first.
1. Remove the tabletop.
2. Remove the ACB together with the cover plate under it. (See "9.8.1
Replacing the PMB" for details).
3. Remove the PMB. (See "9.8.1 Replacing the PMB" for details).
4. Loosen the screws that hold the fan to the middle pan; then remove the
fan.
Note
Note
9 Repair Procedures
03 17 2076163-001 9-19
AC
.2
4.
22
1
5. Install the new fan and secure it with the screws.
6. Reinstall the PMB and connect the fan harness to the board.
7. Reconnect the other harnesses and cables to the PMB.
8. Reinstall the ACB together with the cover plate; connect the cables and
harnesses.
9. Reassemble the tabletop.
10. After the machine is powered ON, check under the middle pan to ensure
that the fan is blowing out.
11. Perform the checkout procedure.
9.8.5 Replacing the fuse
The fuses are located in the AC power inlet socket. Perform the following
procedure for replacement.
1. Make sure the system is turned off.
2. Disconnect the AC power cord from the machine.
3. Use a screwdriver (1) to pry out the two tabs (2) to release the fuse
holder from the AC power inlet socket.
 
AC
.2
4.
01
8
1 2 2
 
Carestation 620/650/650c (A1/A2)
9-20 2076163-001 03 17
4. Take out the fuse holder together with the fuses from the socket.
5. Replace the faulty fuse.
6. Insert the fuse holder back into the AC power inlet socket. A click will be
heard when the holder is fully inserted and locked in the socket.
7. Connect the AC power cord to the socket.
8. Perform the checkout procedure (See Section 3).
9 Repair Procedures
03 17 2076163-001 9-21
9.9 Replacing the ACB
1. Bleed all gas pressure from the system.
2. Make sure the system is turned off.
3. Unplug the AC power cord.
4. Remove the tabletop.
5. Remove the screws that hold the shield cover to the ACB, then remove
the cover from the board.
6. Disconnect the cables or tubing connected to the ACB:
1
3
2
4
5
6
7
8
9
11
10
AC
.2
4.
22
2
12
13
• the cable (1) from the DU
• the cable (9) from the PMB
• the cable (11) from the FIB
• the cable (10)(not shown here) from the airway module (if present)
• the manifold pressure sampling tube (12) from the Vent Engine
• the sampling tube (13)(not shown here) from the AGSS valve
• the AC mains LED indicator harness (2)
• the harness (3) from the On/Standby switch
• the harness (4) from the Gas Inlet Valve
• the harness (5) from the flow control valve
• the harness (6) from the flow sensor
• the cable (7) from the SIB
• the harness (8) from the O2 flush switch assembly
The manifold pressure sampling tube and the AGSS pressure sampling tube
look same in size and color, take care and make sure they are correctly
connected to corresponding connectors.
--
7. Loosen the ten screws that hold the ACB to the plate.
Note
Carestation 620/650/650c (A1/A2)
9-22 2076163-001 03 17
8. Lift the ACB slightly to remove it.
9. To replace the ACB, reassemble in reverse order.
10. Perform the required procedures after new board installation (see "9.2
Circuit board replacement precautions").
9 Repair Procedures
03 17 2076163-001 9-23
9.10 Replacing the FIB
To replace the FIB, first remove the tabletop and the rear upper panel. Then,
follow the procedures below:
1. Disconnect the following cables and harnesses from the FIB (1):
2
1
AC
.2
4.
22
3
• the cable from the ACB
• the flat cable from the bottom task light board
• the flat cable from the center top light board
• the harness from the ACGO light board (if present)
• the harness from theAUX light board (if present)
• the harness from the digital LED flow board
• the harness from the pipeline transducers
• the harness from the cylinder transducers (if present)
• the solenoid valves harness from the gas control module
2. Disconnect the inlet and outlet tubing connected to the flow sensors.
3. Remove the screws that hold the cover (2) to the board.
4. Loosen the mounting screws (three for each flow sensor), then gently
pull the flow sensors out from the FIB.
5. Remove the four mounting screws that hold the board to the FIB
mounting plate.
6. Replace the FIB with a new one and reassemble the machine in reverse
order.
Make sure the cables and harness are correctly connected to the FIB.
See "2.6 Frame Interface Board" for details on the FIB connections.
7. Perform the required procedures after new board installation (see "9.2
Circuit board replacement precautions").
Note
Carestation 620/650/650c (A1/A2)
9-24 2076163-001 03 17
9.11 Replacing the SIB
1. Bleed all gas pressure from the system.
2. Turn off the system and unplug the AC power cord.
3. Push down the canister release lever to unlatch the canister.
4. Remove the canister.
5. Push the breathing system release button, then remove the lower part of
the breathing system.
6. Press the two tabs on the SIB cable connector (1) at the same time, then
pull out to disconnect the cable from the SIB.
AC
.2
4.
22
4
 3 
1
2
7. Loosen the three screws (3) that hold the SIB assembly (2) to the upper
breathing circuit housing. Remove the SIB assembly from the breathing
circuit.
8. Disconnect the harnesses from the SIB.
AC
.2
4.
01
9
9. Disconnect the tubing connected to the SIB, pull out the gas sampling
assemblies (Expiratory flow, Inspiratory flow, O2 cell) from the SIB. (Note
the tubing connections before detaching them).
10. Loosen the screws securing the SIB, then remove the SIB from the SIB
mounting shelf.
11. Install the new SIB in the reverse order.
After the SIB replacement, check the proper positioning of the
cable interconnecting the SIB to the ACB, make sure the cable
will not affect assembling of the lower breathing system.
--
12. Reassemble the breathing system.
CAUTION
9 Repair Procedures
03 17 2076163-001 9-25
13. Perform the required procedures after new board installation (see "9.2
Circuit board replacement precautions").
9.11.1 Replacing the SIB filters and rubber ports
1. Disassemble the SIB assembly from the breathing circuit. See "9.11
Replacing the SIB" for details.
2. Disconnect the two harnesses from the SIB.
3. Remove the four screws that hold the SIB to the assembly.
4. Remove the SIB from the assembly.
5. Replace the filters and rubber ports:
• Remove the filters (a to e).
• Replace the rubber ports (under the filters) as necessary.
• Install the new filters to the SIB assembly.
 
AC
.2
4.
36
1
a
b
c
d
e
 
When installing the new filters, install filter a and c (the lower ones) first, then
install the rest.
--
6. Reinstall the SIB to the assembly:
 
AC
.2
4.
36
2
 
• Connect the two harnesses to the SIB.
• Make sure the harnesses go through the outer side of the lower
filters. The harness being placed between the two filters could result
in leakage in SIB pneumatic connection.
• Install the SIB to the assembly, make sure all five filter ports are well
connected with corresponding SIB connectors.
• Fasten the four screws to secure the SIB.
7. Reconnect the O2 cell cable (if equipped) to the SIB.
Note
Carestation 620/650/650c (A1/A2)
9-26 2076163-001 03 17
8. Reconnect the cable from the ACB to the SIB.
9. Reinstall the SIB assembly to the breathing system.
10. Reassemble the breathing system.
11. Perform the "7.10 SIB Pneumatic Sense Tubing Leak Test".
12. Perform User Calibrations.
13. Perform all Ventilator Calibrations.
9 Repair Procedures
03 17 2076163-001 9-27
9.12 Servicing the Vent Engine
The Vent Engine is located in the middle pan.
The Vent Engine includes the following subassemblies.
• Inlet valve solenoid (1)
• Gas Inlet Valve assembly (2)
• Inlet filter (3) - located under the Gas Inlet Valve
• Drive gas regulator (4)
• Inspiratory Flow Control Valve (5)
• Interface manifold (6)
• Flow sensor (7)
• MOPV valve (8) - located under the cover
• Drive gas check valve (9) - located under the MOPV valve
• Free breathing check valve (10)
• Exhalation valve (11) - located under the cover
• Reservoir (12)
To replace any of the Vent Engine components, you must first remove the
tabletop. See "9.6 How to remove the tabletop" for details.
6
7
810
11
12
2
4
AC
.2
4.
06
0
1
9
3
5
9.12.1 Removing the Vent Engine
1. Disconnect pipeline supplies.
2. Close the cylinder valves (if present).
3. Bleed all gas pressure from the system.
4. Turn off the system and unplug the AC power cord.
5. Remove the tabletop.
Carestation 620/650/650c (A1/A2)
9-28 2076163-001 03 17
6. Disconnect the gas inlet valve harness from the ACB.
7. Disconnect the flow sensor harness from the ACB.
8. Disconnect the inspiratory flow control valve harnesses from the ACB.
9. Disconnect the manifold pressure sensing tube from the ACB.
10. Disconnect the other tubes connected to the Vent Engine.
11. Loosen the three screws that hold the Vent Engine manifold to the
middle pan.
12. Lift the Vent Engine out of the pan.
13. To replace the Vent Engine, reassemble in reverse order.
9.12.2 Servicing the Vent Engine components
Most of the components on the Vent Engine can be replaced by removing the
mounting screws and reusing them to secure the replacement part.
2
3
1
456
7
3
9
8
11
12
AC.24.061
10
Gas inlet valve solenoid (1):
• Inspect seal between solenoid and gas inlet valve body. Replace the
seal as necessary.
Replace the gas inlet valve solenoid if defective.
Gas inlet valve (2):
• Inspect the o-ring that seal the gas inlet valve to the manifold. Replace
as necessary.
To replace the gas inlet valve components, see "9.12.3 Replacing gas
inlet valve components".
Inlet filter (3):
• The gas inlet valve need to be removed to get access of the inlet filter.
Replace the filter as necessary.
Make sure the filter is installed with the smooth side facing up.
9 Repair Procedures
03 17 2076163-001 9-29
Inspect the o-ring between the filter and the manifold. Replace as
necessary.
Interface manifold (4):
• Inspect the five o-rings in the interface manifold. Replace the o-rings as
necessary. Refer to "10.7.3 Vent Engine manifold" for more details.
Lubricate o-rings sparingly with Krytox.
Drive gas regulator (5):
• Inspect the two o-rings that seal the drive gas regulator to the manifold.
Replace as necessary.
Replace the drive gas regulator as necessary.
Perform the drive gas regulator calibration. Refer to "5.5 Adjust drive gas
regulator" for more details.
Inspiratory flow control valve (6):
• Inspect the two o-rings that seal the valve to the manifold. Replace the
o-rings as necessary.
Replace the inspiratory flow control valve as necessary.
Note orientation of the inspiratory flow control valve, make sure the valve
is correclty installed.
Perform the Inspiratory Flow Valve calibration. Refer to "5.6.2 Inspiratory
Flow Valve" for more details.
Flow sensor (7):
• Inspect the two o-rings that seal the flow sensor to the manifold. Replace
as necessary.
Replace the flow sensor as necessary.
Drive gas check valve (8):
• To get access of it, the cover (over the MOPV and Exhalation valve), the
MOPV (10) and the reservoir (12) need to be removed first.
Clean the drive gas check valve seat on the manifold and the seal on the
drive gas check valve with isopropyl alcohol if there is any adhesion
between valve seat and the seal. Replace the drive gas check valve
assembly as necessary.
 
Seat
AC
.2
4.
06
1-
1
Seal
 
Carestation 620/650/650c (A1/A2)
9-30 2076163-001 03 17
Free breathing check valve (9):
• Unscrew it from the Vent Engine to remove.
Inspect the o-ring that seal it to the manifold port. Replace as necessary.
MOPV (10):• To get access to it, loosen the three screws to remove the cover (over
the MOPV and Exhalation valve).
Replace the MOPV as necessary.
Exhalation valve (11):
• Loosen the three screws to remove the cover (over the MOPV and the
Exhalation valve).
Replace the exhalation valve as necessary.
Note the orientation of the exhalation valve diaphragm when seating it to
the valve base.
Reservoir (12):
• Loosen the three screws to remove the cover (over the MOPV and the
Exhalation valve).
Remove the MOPV.
Remove the free breathing check valve.
Loosen the six screws that hold the reservoir to the manifold. Replace
the reservoir.
Inspect the two o-rings that seal the reservoir to the manifold. Replace
as necessary.
Reinstall the other parts that removed in the previous steps.
9 Repair Procedures
03 17 2076163-001 9-31
9.12.3 Replacing Gas Inlet Valve components
Lubricate items marked with an asterisk (*) sparingly with Krytox.
1
*
*
*
5*
2
3*
4*
6*
7*
AC
.2
4.
06
2
1. Remove the retaining ring (1) and the cap (2).
2. Use pneumatic pressure to remove the shuttle. Cover the shuttle with a
cloth and briefly apply pressure (connect the drive gas hose or use
pipeline pressure) through the drive gas inlet.
3. Remove the upper o-ring (3) and the lower o-ring (4*).
4. Install the lower o-ring (4*).
5. Lubricate the shuttle (5) at the three areas (*) shown: the circumference
of the shuttle where the upper and lower u-cup seals are placed and the
body part of the shuttle that slides along the lower o-ring.
6. Install the lower u-cup seal (6*) and the upper u-cup seal (7*) on the
shuttle.
7. Press the shuttle assembly into the gas inlet valve manifold.
8. Install the upper o-ring (3*).
9. Install the cap (2) and the retaining ring (1).
10. Reassemble in reverse order.
Carestation 620/650/650c (A1/A2)
9-32 2076163-001 03 17
9.13 Servicing the pipeline inlet manifold components
The pipeline inlet filter and the inlet check valve can be replaced without
removing the pipeline manifold from the machine. To replace the pressure
transducer, you have to remove the manifold.
9.13.1 Replacing pipeline inlet filter
1. Bleed all gas pressure from the machine.
2. Remove the pipeline inlet fitting.
3. Pull the pipeline inlet filter out of the fitting. The o-ring should come out
with the filter.
 
 
4. Install the new pipeline inlet filter in the pipeline inlet fitting. The new filter
comes with an o-ring.
5. Perform the checkout procedure.
9.13.2 Replacing pipeline inlet check valve
1. Remove the upper rear panel.
2. Remove the pipeline inlet fitting.
3. The Air and O2 pipeline manifolds include a drive gas connection at the
back of the manifold. Remove the drive gas tube or plug to access the
check valve.
4. From the back of the pipeline manifold, use a thin tool to push out the
check valve. (For an N2O manifold, you will have to carefully apply
pressure at the outlet of the manifold — with a syringe for example — to
gently force the check valve out of the manifold).
AC.24.007
5. Push the new check valve into the opening, using the same thin tool.
The new check valve includes an o-ring — orient the o-ring toward the
pipeline inlet. Note: Make sure to push the new check valve all the way
back into the opening until it bottoms out on the shoulder.
9 Repair Procedures
03 17 2076163-001 9-33
6. Install the pipeline inlet fitting.
7. Perform the checkout procedure.
9.13.3 Replacing the pipeline inlet manifold
1. Bleed all gas pressure from the machine.
2. Remove the upper rear panel.
3. Disconnect the tubing from the manifold outlet(s).
4. Disconnect the harnesses from the transducers (2).
AC.24.144
1
1
1
2
2
2
2
3
3
4
5
5. Remove the three screws (1) that hold the pipeline gas-supply module
assembly (5) to the machine frame.
6. Loosen the screw (4) to remove the inlet manifold to be serviced from
the manifolds assembly.
7. Loosen the four screws (3) that hold the transducer to the manifold,
remove the transducer.
8. Transfer the following item to the replacement manifold or install new as
required.
Carestation 620/650/650c (A1/A2)
9-34 2076163-001 03 17
10
678 9
AC
.2
4.
07
0
• pipeline check valve (6)
• inlet filter (7)
• inlet fitting (8) and o-ring (9)
• relief valve (10)
9. Transfer the pressure transducer to the new supply.
10. To reassemble:
• Mount the inlet manifold.
• Reconnect the tubing.
• Reconnect the transducer harnesses.
• Replace the rear panel.
11. Perform the checkout procedure (Section 3).
9.13.4 Replacing the pipeline gas-supply pressure transducers
The pipeline gas-supply pressure transducers are located in the rear upper
enclosure. The transducer itself is mounted directly to the gas supply
module. To replace a pressure transducer, you have to remove the module
from the machine.
1. To access the gas-supply pressure transducers (3), remove the rear
upper panel. See "9.5 How to remove the rear panels" for details.
2. Disconnect the transducer harnesses from the transducers (3) on the
gas-supply module.
9 Repair Procedures
03 17 2076163-001 9-35
AC.24.145
2
2
2
3
3
3
3
4
4
1
4
4
1
3. Loosen the three screws (2) that secure the pipeline gas-supply module
assembly (1) to detach it from the machine frame.
4. Remove the screws (4) that hold the pressure transducer to the pipeline
gas-supply module.
5. Remove the defective pressure transducer.
6. Install the new transducer to the gas-supply module and secure it with
screws.
7. Reassemble the gas-supply module to the machine.
8. Connect the harness from the Frame Interface Board to the transducer.
Note the harness label to make sure the harness matches correctly with the
right transducer.
--
9. Perform the checkout procedure (Section 3).
Note
Carestation 620/650/650c (A1/A2)
9-36 2076163-001 03 17
9.14 Servicing the cylinder supply modules
Be careful not to expose internal components to grease or oil
(except Krytox or equivalent).
If a cylinder supply module or a cylinder pressure transducer is replaced/
installed, Zero Gas Transducers calibration need be performed after the
replacement/installation.
9.14.1 Replacing the primary regulator module
1. Bleed all gas pressure from the machine.
2. Ensure that all cylinder and pipeline pressures are at zero before
proceeding.
3. Remove the upper rear panel.
4. Disconnect the output tube connected to the fitting (1).
AC
.2
4.
22
7
1
2
3
4
5. Remove the three mounting screws and lockwashers (2).
6. Remove the fitting from the replacement gas supply module (3).
7. Transfer the pressure transducer (4) to the new supply.
• Remove any teflon tape remnants from the transducer mounting
threads (transducer and module).
• Apply 1-1/4 turns of new teflon tape around the treads. Verify that
the first few threads are free of tape.
• Install the transducer.
8. To reassemble:
• Secure the cylinder supply module in place.
WARNING
Note
9 Repair Procedures
03 17 2076163-001 9-37
• Attach the cylinder output fitting.
• Pull on the cylinder output fitting to ensure it is locked in place.
9. Check the output of the regulator BEFORE you install the rear panel.
Adjust if necessary.
10. Perform the checkout procedure (Section 3).
9.14.2 Replacing the cylinder inlet filter
1. Bleed all gas pressure from the machine.
2. Open the cylinder yokes.
3. Remove the inlet adapter from the cylinder yoke, using a 4-mm hex
wrench.
Note: A brass retaining ring keeps the filter inside the inlet adapter.
4. Thread a 6-mm screw (two turns only) into the brass retaining ring and
pull it out.
Be careful not to crush the filter. Do not thread in the screw
more than two full turns.
--
AC
.2
4.
42
1
5. Remove the filter.
6. Install the new filter and brass retaining ring.
7. Install the inlet adapter in the cylinder yoke.
8. Perform the checkout procedure.
9.14.3 Replacing the cylinder check valve
The cylinder check valve is not a replaceable item. If the check valve is
defective, you must replace the complete cylindersupply module.
CAUTION
Carestation 620/650/650c (A1/A2)
9-38 2076163-001 03 17
9.15 Replacing the O2 flush valve
1. Bleed all gas pressure from the system.
2. Make sure the system is turned off.
3. Remove the tabletop.
4. Disconnect the tubing connected to the O2 flush valve.
5. Remove the bracket that fastens the O2 flush valve manifold to the
middle pan.
AC
.2
4.
39
1
6. Hold the O2 flush button assembly (1) and turn the valve body assembly
(2) counterclockwise to detach the valve body from the O2 flush button.
1
AC
.2
4.
26
8
2
7. Disconnect the microswitch harness from the ACB.
8. Replace the O2 flush button, the microswitch and the valve body with
new parts if defective.
9. Reassemble the O2 flush valve in the reverse order.
10. Connect the tubing and harnesses.
11. Attach the O2 flush valve bracket and fasten the two screws.
12. Cover the tabletop.
13. Perform the checkout procedure.
9 Repair Procedures
03 17 2076163-001 9-39
9.16 Servicing the breathing system components
You need to remove the lower breathing circuit enclosure to access most of
the breathing system components.
To detach the lower breathing circuit enclosure, perform below steps:
1. Turn off the system.
2. Bleed all gas pressure from the system.
3. If present, remove the patient circuits connected to the breathing
system.
4. Push down the canister release lever to unlock the canister from the
breathing system.
AC
.2
4.
07
1
5. Remove the canister.
AC
.2
4.
07
2
6. Open the breathing system release button cover.
Carestation 620/650/650c (A1/A2)
9-40 2076163-001 03 17
AC
.2
4.
15
4
7. Push the breathing system release button, then push the lower breathing
circuit enclosure downward a little to separate it from the upper
breathing system assembly. Pull the lower breathing circuit enclosure left
to remove it from the shaft.
AC
.2
4.
15
5
AC
.2
4.
15
6
9.16.1 Replacing the inspiratory/expiratory ports
If the inspiratory/expiratory ports are damaged, replace the whole inspiratory/
expiratory ports assembly.
9 Repair Procedures
03 17 2076163-001 9-41
1. Remove the lower breathing circuit enclosure from the breathing system.
See "9.16 Servicing the breathing system components" for details.
2. Push down the latch tab to release the ports assembly from the lower
breathing circuit enclosure, remove the ports assembly.
AC
.2
4.
25
0
3. Take out the inspiratory check valve (1) from the ports assembly.
AC
.2
4.
25
2
1
4. Transfer the inspiratory check valve to the inspiratory port of the new
ports assembly. See "9.16.5 Replacing the inspiratory/expiratory check
valve" for the check valve installation.
5. Assemble the new ports assembly (with the inspiratory check valve
installed) to the lower breathing circuit enclosure.
6. Install the lower breathing circuit to the breathing system.
7. Perform the leak test.
9.16.2 Replacing the Bag/Vent switch and the CO2 bypass
1. Detach the lower breathing circuit enclosure to get access to the Bag/
Vent switch. See "9.16 Servicing the breathing system components" for
details.
Carestation 620/650/650c (A1/A2)
9-42 2076163-001 03 17
2. Remove the inspiratory/expiratory ports assembly from the lower
breathing circuit enclosure. See "9.16.1 Replacing the inspiratory/
expiratory ports" for details.
3. Remove the flow sensors:
• Pull the flow sensor out a little from the Bag/Vent switch assembly
port.
• Remove the flow sensor from the enclosure.
4. Loosen the screws that hold the Bag/Vent switch assembly to the bottom
of the enclosure, then remove the Bag/Vent switch assembly.
5. Take out the Bag/Vent switch assembly (1 and 2).
AC
.2
4.
25
3
1
2
3
6. Release the tab (3) that locks the CO2 bypass (2) to the Bag/Vent switch
(1), then remove the CO2 bypass.
7. Replace the faulty Bag/Vent switch assembly with a new one.
8. Replace the CO2 bypass as necessary.
9. Attach the CO2 bypass to the Bag/Vent switch, push the locking tab to
lock the CO2 bypass with the Bag/Vent switch assembly.
10. Install the new Bag/Vent switch assembly to the lower breathing circuit
enclosure, secure it with the mounting screws.
11. Reinstall the flow sensors.
12. Reinstall the inspiratory/expiratory ports assembly.
13. Hang the lower breathing circuit enclosure on the mounting pin, slide it
toward the machine along the pin till it reaches the end, pivot the bottom
of the lower breathing circuit upward to lock it in place.
14. Perform the checkout procedure.
9 Repair Procedures
03 17 2076163-001 9-43
9.16.3 Replacing the APL valve
The APL valve assembly includes the APL valve, diaphragm, APL bottom
components.
To replace the APL valve assembly, you must release the breathing system
and remove the lower breathing circuit enclosure.
Follow the below steps to replace the total APL valve assembly or replace
the subassembly as necessary:
1. Loosen and remove the three mounting screws (2) that hold the APL
valve (1) to the breathing system enclosure.
1
2
AC
.2
4.
04
2
2. Remove the APL valve from the underside of the breathing system
enclosure.
3. Install the new APL valve to the mounting place and secure it with the
three screws.
4. Remove the diaphragm from the lower breathing circuit enclosure.
Replace it with a new one as necessary.
5. Replace the APL valve bottom assembly as necessary:
• Loosen and remove the two screws that hold the APL valve bottom
assembly to the lower breathing circuit enclosure.
• Remove the existing APL valve bottom assembly.
• Install the new APL valve bottom assembly and secure it with the
two screws.
6. Seat the diaphragm to the APL valve bottom assembly.
7. Reassemble the breathing system.
8. Perform the checkout procedure.
Carestation 620/650/650c (A1/A2)
9-44 2076163-001 03 17
9.16.4 Replacing the flow sensors
1. Detach the lower breathing circuit enclosure to get access to the Bag/
Vent switch.
2. Remove the inspiratory/expiratory ports assembly from the lower
breathing circuit enclosure.
3. Remove the faulty flow sensors:
• Pull the flow sensors out a little from the Bag/Vent switch assembly
port.
• Remove the flow sensors from the enclosure.
4. Install the new flow sensors:
• Align the gap of the inspiratory flow sensor assembly with the tab on
the mounting port, insert the inspiratory flow sensor to the mounting
port.
AC
.2
4.
04
4
• Install the expiratory flow sensor in a similar way.
5. Reassemble the inspiratory/expiratory ports assembly to the lower
breathing circuit enclosure.
6. Hang the lower breathing circuit enclosure on the mounting pin, slide it
toward the machine along the pin till it reaches the end, hold the bottom
of the lower breathing circuit upward to lock it in place.
7. Perform the checkout procedure.
9.16.5 Replacing the inspiratory/expiratory check valve
1. Detach the lower breathing circuit enclosure from the breathing system.
2. Remove the inspiratory/expiratory ports assembly from the lower
breathing circuit enclosure.
3. Replace the inspiratory check valve located in the inspiratory/expiratory
ports assembly:
9 Repair Procedures
03 17 2076163-001 9-45
• Take the inspiratory check valve (1) out from the inspiratory port.
AC
.2
4.
25
2
1
• Align the groove of the check valve (2) with the tab (3) in side of the
port, push the check valve inside to the bottom.
2 3
AC
.2
4.
04
6
4. Replace the expiratory check valve in the Bag/Vent switch assembly:
• Remove the expiratory flow sensor.
• Remove the existing expiratory check valve from the port integrated
in the Bag/Vent switch assembly.
• Install the new expiratory check valve to the port: align the groove of
the check valve with the tab in side of the port, push the check valve
inside to the bottom.
• Reinstall the expiratory flow sensor.
5. Reassemble the breathing system in the reverse order.
6. Perform the checkout procedure.
9.16.6 Replacing the canister holder
The canister release lever and the canister support base can be replaced
separately as necessary.
To replacethe canister holder components, you need to first remove it from
the machine.
Carestation 620/650/650c (A1/A2)
9-46 2076163-001 03 17
Remove the canister first, then loosen the four mounting screws (1) to detach
the canister holder assembly (2) from the machine.
1
2
AC
.2
4.
04
7
Replacing the canister release lever
1. Remove the canister holder dish from the canister holder assembly.
2. Unscrew the screw (3) under the holder base that fastens the canister
release lever (4), then remove the lever.
3
4
AC.24.049
3. Install the new canister release lever.
4. Place the canister holder dish on to the base.
5. Reinstall the canister holder assembly to the machine.
Replacing the canister support base
1. Remove the canister holding dish from the canister holder assembly.
2. Remove the canister release lever.
3. Loosen the three screws under the support base to detach it from the
canister holder arm.
4. Replace the faulty support base with a new one.
5. Reassemble the canister holder assembly in the reverse order.
9 Repair Procedures
03 17 2076163-001 9-47
6. Reinstall the canister holder assembly to the machine.
9.16.7 Servicing the bellows assembly
1. Turn the bellows housing counterclockwise and lift to remove it.
AC
.2
4.
14
8
2. Push the latch toward the center and remove the rim together with the
bellows.
AC
.2
4.
27
6
3. Remove the bellows from the rim. Check the bellows, replace if defective
or damaged.
Carestation 620/650/650c (A1/A2)
9-48 2076163-001 03 17
AC
.2
4.
27
7
4. Remove and check the pop-off valve, replace if defective or damaged.
AC
.2
4.
15
1
5. Squeeze the latch toward the center and remove it.
AC
.2
4.
15
2
6. Check the seal, replace if defective.
9 Repair Procedures
03 17 2076163-001 9-49
AC
.2
4.
15
3
Do not disassemble the pop-off valve. This can damage the
seat or diaphragm and cause injury to the patient.
--
7. Remove the bellows base from the machine. Check the vent port,
replace if defective.
*
*
AC.24.363
Lubricate the new vent port with Krytox during replacement. Only Lubricate
the two areas marked with * as shown above.
--
8. Assemble the bellows assembly in the reverse order.
9. Perform the bellows assembly test (see "13.2.5.4 Bellows assembly
inspection") before installing it back to the breathing system.
WARNING
Note
Carestation 620/650/650c (A1/A2)
9-50 2076163-001 03 17
9.17 Replacing the bag arm
1. Remove the label (1) that covers the bag arm mounting screws.
AC
.2
4.
25
4
2
1
3
2. Loosen the two mounting screws that hold the bag arm (2) to the bag
arm base (3).
3. Take out the bag arm from the base.
4. Seat the new arm into the base and secure it with the screws.
5. Stick the new label over the mounting screws.
9 Repair Procedures
03 17 2076163-001 9-51
9.18 Servicing the gas control components
9.18.1 Replacing the secondary regulator manifold or balance
regulator manifold
1. Bleed all gas pressure from the system.
2. Remove the upper rear panel.
3. Remove the top panel.
4. Disconnect the tubes connected to the gas control module (1).
AC
.2
4.
27
8
2
3
1
5. Loosen the screws (two on each valve) to remove the solenoid valves
(2) installed on the gas control module.
6. Unscrew the two screws (3) that hold the gas control module to the top
pan.
7. Remove the gas control module from the top pan.
8. Remove the needle valve from the regulator manifold:
• Unscrew the complete assembly together (stop collar, needle
valve).
• Replace the o-ring if necessary.
9. Replace the defective regulator manifold:
The manifolds are assembled together with two screws on the sides.
Remove the screws (4) to detach the manifold to be replaced.
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9-52 2076163-001 03 17
AC
.2
4.
27
9
4
10. Screw the needle valve into the new regulator manifold.
11. Remove the plugs and fittings from the old regulator manifold.
12. Install the plugs and fitting into the new regulator manifold (pull on the
plugs and fittings to ensure that they are locked into the manifold).
13. Reinstall the solenoid valves.
14. Reconnect the tubes to the regulator assembly.
15. Do the necessary calibrations.
Necessary calibrations Section
Secondary Regulator 5.2
O2 minimum flow 5.3.1
Link system 5.4
16. Reinstall the rear upper panel and the top panel.
17. Perform the checkout procedure (Section 3).
9.18.2 Replacing the O2 or N2O needle valve (on machines with
N2O)
1. Bleed all gas pressure from the machine.
2. Ensure that all cylinder and pipeline gauges read zero before
proceeding.
3. Remove the top shelf.
4. Set the O2 and N2O needle valves to their minimum position.
5. Loosen the set screw on the N2O knob, then remove the knob.
6. Loosen the set screws on the N2O sprocket and the O2 knob.
7. To remove, grasp the O2 knob/sprocket, N2O sprocket, and chain as an
assembly. Remove as an assembly.
8. Remove the spacer from the N2O needle valve spindle.
9. Loosen the set screws on the needle valve stop collar for the needle
valve that is being replaced.
9 Repair Procedures
03 17 2076163-001 9-53
10. Remove the stop collar.
11. To remove the needle valve from the mixer block, turn the needle valve
counterclockwise with a 16-mm wrench.
12. To install the new needle valve, turn it clockwise and tighten it with the
wrench.
Be sure the o-ring is properly located on the tip of the needle valve.
--
The O2 needle valve (1) and N2O needle valve (2) are not the
same. Patient injury can result if the wrong needle valve is
installed in the flowmeter block. You can identify the N2O
needle valve by a groove located just below the top brass hex.
--
1
2
AC
.2
4.
12
1
13. Install the stop collar on the new needle valve. Do not tighten the set
screws.
14. Perform the needle valve calibration. See "5.3 Flow control needle
valves calibration" for details.
15. After calibrating the needle valve, put the spacer onto the N2O needle
valve spindle.
16. Put the chain on the O2 knob/sprocket assembly and the N2O sprocket.
Note
WARNING
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AC
.2
4.
06
5
17. Install the chain and sprockets on the needle valve spindles as an
assembly. Do not tighten the set screws.
AC
.2
4.
06
7
18. Perform the link system calibration. See "5.4 Link system calibration".
19. Install the top shelf.
20. Perform the checkout procedure.
9.18.3 Replacing an Air needle valve on all machines or an O2
needle valve on machines without N2O
1. Bleed all gas pressure from the machine.
2. Ensure that all cylinder and pipeline gauges read zero before
proceeding.
3. Remove the top shelf.
4. Loosen the set screws on the flow control knob and remove the knob.
5. Loosen the set screws on the stop collar and remove the collar.
6. If equipped, remove the maximum flow stop collar.
7. Using a 16-mm wrench, remove the needle valve by turning it counter
clockwise.
9 Repair Procedures
03 17 2076163-001 9-55
8. Install the new needle valve and tighten.
Be sure the o-ring is properly located on the tip of the needle valve.
--
9. If equipped, install the maximum flow stop collar (do not tighten).
10. Install the stop collar (do not tighten the screws).
11. Install the flow control knob on the shaft. Tighten one set screw to snug.
12. Reconnect the gas supplies.
13. Perform the flow control stop procedures explained in:
• "5.3.2 O2 needle valve calibration (minimum flow)" for O2.
• "5.3.4 Air needle valve calibration (minimum flow)" for Air.
14. Install the top shelf.
15. Perform the checkout procedure.
9.18.4 Replacing the Link - 25 assembly
See "9.18.2 Replacing the O2 or N2O needle valve ( on machines with
N2O)" for the Link - 25 assembly replacement.
Note
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9.19 Servicing vaporizer manifold parts
9.19.1 Repairing manifold port valve
1. Turn off the system.
2. Remove the vaporizers from the vaporizer manifold.
3. Using a 14-mm wrench, carefully remove the valve nipple (threaded).
4.