GE-CF6-80E1-97

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POSITION
INDICATION HOLE
AFT FAN CASE
BORE COOLING VALVE
SPRING
SOLENOIDE
TRANSLATING SLEEVE
SECTION A- A
POSITION
INDICATION HOLE
5:30 O‘CLOCK POSITION
SPRING LOADED OPEN
ENERGIZED
VALVE CLOSED
5TH AIR FLOW DIRECTION
A
NOTE:
POSITION.
VALVE SHOWN
IN THE OPEN
PNEUMATIC SIGNAL
PRESSURE PORT
5
A330 - ENGINE ATA 71 up 80
GE CF6-80E1 193 of 394
 
 
 
 
 
 
 
 
 
 
 
CORE COMPARTMENT COOLING VALVE
Core Compartment Cooling Valve Description
The Core Compartment Cooling Valve (CCCV) is mounted to the HPC Case in
approx. 10:00 position.
The CCCV provides cooling air for
� the Core Compartment
� various switches
� particularly high stressed components and devices like e.g. Cowling Hinges.
Fan Air is used as cooling air.The air is taken away from the Fan Diaphragm
directly behind a Variable Bleed Valve.
The valve is equipped with a ”Manual Override Handle” (which is also used as
a valve position indication) and a lockout screw. The valve can be locked only
in ”OPEN” position.
Normal Operation
The valve provides maximum cooling air flow to the core compartment airspace
during all operating conditions except cruise.
At altitude (cruise), ambient air provides sufficient cooling and the ECU signals
the valve closed. A small amount of air flow continues to pass through the
valve when closed.
The CCCV is a ”Solenoid Controlled, Pressure Operated Butterfly Valve”.
The valve is normally spring loaded (Fail Safe) open.
Valve position control is provided by the current active ECU Channel A or B.
Only if the engine is operated under stabilized conditions, the system becomes
active and the (normally open) valve closes.
The CCC Valve is equipped with its own dual control solenoid. The ECU en
ergizes either the ”A” or the ”B” coil of the Core Compartment Cooling Valve
Solenoid to allow 11th stage HPC air to go to the close side of the
CCC Valve.
CORE COMPARTMENT
COOLING VALVE
A330 - ENGINE ATA 71 up 80
GE CF6-80E1 194 of 394