On the lower ECAM display unit:
-
the crossfeed valve symbol is shown closed (cross-line).
In the Zone 142/FR42, on the crossfeed valve actuator:
-
the see/feel indicator shows that the valve is closed.
On the overhead FUEL panel 40VU:
-the ON (white) legend in the X FEEDpushbutton switch comes on when the valve is open.
NOTE : The OPEN legend does not come
____ on.
On the lower ECAM display unit:
-
the crossfeed valve symbol is shown open (in-line).
In the Zone 142/FR42, on the crossfeed valve actuator:
-
the see/feel indicator shows that the valve is open.
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-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
7. On the overhead FUEL panel 40VU: On the overhead FUEL panel 40VU:
-release the pushbutton switch X - the ON legend goes off when the valve FEED 4QE. is closed.
On the lower ECAM display unit:
-
the crossfeed valve symbol is shown closed (cross-line).
In the Zone 142/FR42, on the crossfeed valve actuator:
-
the see/feel indicator shows that the valve is closed.
8. On the circuit breaker panel 49VU:
-close the circuit breaker 2QE
(MOT1).
Subtask 28-23-51-860-051
C. Put the aircraft back to its initial configuration.
(1)
Do the EIS stop procedure
(Ref. TASK 31-60-00-860-002).
(2)
De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
Subtask 28-23-51-410-052
D. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the LH MLG door (Ref. TASK 32-12-00-410-001).
(3)
Remove the access platform(s).
(4)
Remove the warning notice(s).
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ENGINE LP FUEL SHUT OFF - DESCRIPTION AND OPERATION
___________________________________________________
1. General_______
The engine LP fuel shut-off system controls the LP fuel-valves. Each LP fuel-valve isolates its engine from the fuel supply at the front spar.
The related ENG MASTER switch (Ref. 76-12-00) controls the operation of the LP fuel-valve. But if the related engine FIRE PUSH switch (Ref. 26-12-00) is operated the LP fuel-valve closes.
NOTE : If the LP fuel-valve of one engine is closed, all the fuel in the
____
aircraft is still available to the other engine.
The Engine/Warning Display (EWD) (Ref. 31-66-00) and the System Display (SD) (which together make the ECAM) give engine LP fuel shut-off information to the crew. If specified failures occur:
-a warning is given on the EWD
-the FUEL page shows on the SD.
When necessary, the crew can make a selection on the ECAM control panel
(Ref. 31-56-00) to look at the FUEL page.
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2. Component Location__________________ (Ref. Fig. 001)
-------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA | | | | DOOR | REF.
-------------------------------------------------------------------------------12QM VALVE-LP FUEL, ENG 1 522 522AT 28-24-41 13QM VALVE-LP FUEL, ENG 2 622 622AT 28-24-41 9QG ACTUATOR-LP FUEL VALVE, ENG 1 522 522AT 28-24-51 10QG ACTUATOR-LP FUEL VALVE, ENG 2 622 622AT 28-24-51 80QM V BAND CLAMP-LP VALVE ACTR, ENG 1 522 522AT 28-20-00 81QM V BAND CLAMP-LP VALVE ACTR, ENG 2 622 622AT 28-20-00
3. System Description__________________
The LP fuel shut-off system has two independent electrical control circuits for each LP fuel-valve. They connect through a control relay to these related switches:
-
the ENG MASTER switch (Ref. 76-12-00)
-
the FIRE PUSH switch (Ref. 26-12-00).
The LP fuel-valve 12QM(13QM) is in the fuel supply line to its related engine. The LP fuel-valve is usually open and in this configuration lets fuel through to its related engine. When one of the LP fuel-valves is closed, the fuel is isolated from that LP fuel valve's related engine. The LP fuel-valve is installed between the engine pylon and the front face of the wing front spar (between RIB8 and RIB9).
Each LP fuel-valve has an actuator 9QG(10QG). The interface between the actuator and the LP fuel-valve is a valve spindle. When the actuator is energized, it moves the LP fuel-valve to the open or closed position. A V-band clamp 80QM(81QM) attaches the actuator to the LP fuel-valve.
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