APU LP FUEL SHUT OFF - FAULT ISOLATION PROCEDURES
_________________________________________________
TASK 28-29-00-810-801
APU Fuel Supply Failure
1. Possible Causes
_______________
- ACTUATOR-APU FUEL LP VALVE (3QF)
- APU FUEL LP VALVE 14QM
- RELAY 4KD
- RELAY 5WF
- RELAY 6WF
- RELAY 6QC
- wiring
- FUEL LINE VENT pushbutton switch
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
28-29-00-810-802 APU Fuel LP Valve operates with one Motor only AMM 28-29-00-710-001 Operational Test of the APU Low Pressure Fuel Valve
using each individual Motor in turn
AMM 28-29-41-000-001 Removal of the APU Fuel Low-Pressure Valve (14QM)
AMM 28-29-41-400-001 Installation of the APU Fuel Low-Pressure Valve
(14QM) AMM 28-29-51-000-001 Removal of the APU Fuel LP Valve Actuator (3QF) AMM 28-29-51-400-001 Installation of the APU Fuel LP Valve Actuator (3QF) ASM 26-22/01 ASM 28-22/01 ASM 49-61/01
3. Fault Confirmation
__________________
A. Do the operational test of the APU LP fuel-valve using each individual motor in turn (Ref. AMM TASK 28-29-00-710-001).
4. Fault Isolation
_______________
A. If the test with both motors is not correct:
- replace the ACTUATOR-APU FUEL LP VALVE (3QF) (Ref. AMM TASK 28-29-51-000-001) and (Ref. AMM TASK 28-29-51-400-001).
NOTE : When the actuator-APU fuel LP valve is removed, do a check of the
____ APU fuel LP valve for correct function. If the function is not correct replace the APU FUEL LP VALVE 14QM (Ref. AMM TASK 28-29-41-000-001) and (Ref. AMM TASK 28-29-41-400-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞28-29-00∞∞∞∞∞∞∞∞∞∞Page 201
Feb 01/98 CES
(1) If the fault continues:
- do a check of the RELAY 4KD and replace if necessary.
(2) If the fault continues:
- do a check of the RELAY 5WF and replace if necessary.
(3) If the fault continues:
- do a check of the RELAY 6WF and replace if necessary.
(4) If the fault continues:
- do a check of the RELAY 6QC and replace if necessary.
(5) If the fault continues:
- do a check and repair the wiring from the: CB 2KD to the APU MASTER SW 14KD via the RELAY 4KD, CB 3WF to the RELAY 5WF, RELAY 5WF to the GND, CB 4WF to the RELAY 6WF, RELAY 6WF to the GND, CB 3QC to the FUEL LINE VENT pushbutton switch 8QC (Ref. ASM 49-61/01), (Ref. ASM 26-22/01) and (Ref. ASM 28-22/01).
(6) If the fault continues:
- replace the FUEL LINE VENT pushbutton switch.
B. If the test with one motor is not correct (Ref. TASK 28-29-00-810-802).
C. Do the test as given in the Para. 3.
5. Close-up
________
A. Put the aircraft back to its initial configuration.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞28-29-00∞∞∞∞∞∞∞∞∞∞Page 202
Feb 01/98 CES
TASK 28-29-00-810-802
APU Fuel LP Valve operates with one Motor only
1. Possible Causes
_______________
- ACTUATOR-APU FUEL LP VALVE (3QF)
- RELAY 4KD
- RELAY 5WF
- RELAY 6WF
- wiring
- RELAY 6QC
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 28-29-00-710-001 Operational Test of the APU Low Pressure Fuel Valve
using each individual Motor in turn AMM 28-29-51-000-001 Removal of the APU Fuel LP Valve Actuator (3QF) AMM 28-29-51-400-001 Installation of the APU Fuel LP Valve Actuator (3QF) ASM 28-22/01 ASM 28-29/01
3. Fault Confirmation
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本文链接地址：A320 Trouble Shooting Manual 排故手册 FUEL 燃油2(105)
