NOTE : The FQIC ARINC output bus lines (1A, 1B, 2A, and 2B) are not
____ checked. A wiring fault in the bus wiring would show as a different failure.
(6) Repair all the unserviceable wiring and connectors.
(7) Do the test given in Para. 3.A.
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CES
TASK 28-26-00-810-816
Fuel - Unwanted Transfer From The Left Or Right Wing Tank To The Center Tank At Any Time
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
1. Possible Causes
_______________
- JET PUMP-L, CENTER TANK (157QM)
- JET PUMP-R, CENTER TANK (158QM)
- biological growth
- loose (foreign) object
- Left (Right) Main Transfer System Clack (moveable flap) Valve
- clack valve seat
- shroud
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
28-12-00-810-801 Fuel - Unwanted Transfer From The Left Wing Tank To
The Center Tank At Any Time AMM 12-11-28-650-003 Pressure Refuel with Automatic Control AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
External Power AMM 28-11-00-280-002 Fuel Tank Leak Checks AMM 28-11-00-790-008 Leak Test with Fuel of the Wing Tank AMM 28-25-00-650-001 Pressure Defuel AMM 28-25-00-869-001 Fuel Transfer AMM 28-26-00-210-001 Manually Operate the Transfer System Discharge Check
Valve on RIB1 and Check For Full and Free Movement AMM 28-26-00-710-001 Operational Test of the Main Transfer System AMM 28-26-41-000-001 Removal of the Center Tank Jet Pump 157QM(158QM) AMM 28-26-41-400-001 Installation of the Center Tank Jet Pump 157QM(158QM) AMM 28-26-44-000-001 Removal of the Main-Transfer-System Clack Valve AMM 28-26-44-400-001 Installation of the Main-Transfer-System Clack Valve AMM 31-60-00-860-001 EIS Start Procedure
3. Fault Confirmation
__________________
A. Test
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (ECAM only) (Ref. AMM TASK 31-60-00-860-001).
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(3) On the ECAM Control Panel (CP), push (in) the FUEL pushbutton switch (P/BSW).
(4) Make sure that the FUEL page shows on the ECAM lower Display Unit (DU).
(5) Refuel (Ref. AMM TASK 12-11-28-650-003), defuel (Ref. AMM TASK 28-25-00-650-001) or transfer fuel (Ref. AMM TASK 28-25-00-869-001) to configure the fuel load as follows:
- wing tank (on the side with the unwanted transfer) approximately 6000 kg (13230 lb)
- center tank, approximately 150 kg (320 lb).
(6) On the ECAM lower DU (FUEL system display):
(a) Monitor the fuel quantities of the wing tank with the unwanted transfer and the center tank.
(b) Record the fuel quantities (when they have become stable after the refuel, defuel or transfer, in step (5)).
(7) Wait for five minutes: NOTE : If there is an unwanted transfer route, gravity will cause a
____ fuel flow to equalize the fuel levels.
(a) Monitor the fuel quantities of the wing tank with the unwanted transfer and the center tank.
(b) Record the fuel quantities.
(8) Use the fuel quantities (that you recorded) to see if there is an unwanted fuel transfer.
NOTE : No fuel transfer (measureable fuel quantity got from the FUEL
____
system page/display) is permitted.
(9) If fuel from a wing tank:
(a) Does transfer, do the steps given in Para. 4.A.
(b) Does not transfer, do the Operational Test of the Main Transfer System (Ref. AMM TASK 28-26-00-710-001).
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4. Fault Isolation
_______________
A. Procedure
(1) Do a check of the Main-Transfer-System Clack (check) Valve (Ref. AMM TASK 28-26-00-210-001).
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊(cè) FUEL 燃油2(103)
