- do a check of the RELAY 4KD and replace it if necessary.
(2) If the fault continues:
- do a check of the RELAY 5WF and replace it if necessary.
(3) If the fault continues:
- do a check of the RELAY 6WF and replace it if necessary.
(4) If the APU fuel LP valve does not open.
- do a check and repair the wiring from the:
CB 2QF to the ACTUATOR VALVE 3QF B/B,
RELAY 4KD A/C1 and ACTUATOR VALVE 3QF B/B.
「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 203
Feb 01/98 CES (a) If the fault continues:
- do a check of the RELAY 6QC and replace it if necessary.
(5) If the APU fuel LP valve does not close.
- do a check and repair the wiring from the: RELAY 5WF A/A1 and ACTUATOR VALVE 3QF B/A, RELAY 6WF A/A1 and ACTUATOR VALVE 3QF B/A, ACTUATOR VALVE 3QF B/C and GND (Ref. ASM 28-29/01) and (Ref. ASM 28-22/01).
B. If the test with the circuit breaker 2QF open 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).
(1) If the fault continues:
- do a check of the RELAY 4KD and replace it if necessary.
(2) If the fault continues:
- do a check of the RELAY 5WF and replace it if necessary.
(3) If the fault continues:
- do a check of the RELAY 6WF and replace it if necessary.
(4) If the APU fuel LP valve does not open.
- do a check and repair the wiring from the: CB 1QF to the ACTUATOR VALVE 3QF A/B, CB 3QC to the ACTUATOR VALVE 3QF A/B, RELAY 4KD A/B1 and ACTUATOR VALVE 3QF A/B (Ref. ASM 28-29/01) and (Ref. ASM 28-22/01).
(a) If the fault continues:
- do a check of the RELAY 6QC and replace it if necessary.
(5) If the APU fuel LP valve does not close
- do a check and repair the wiring from the: RELAY 5WF A/B1 and ACTUATOR VALVE 3QF A/A, RELAY 6WF A/B1 and ACTUATOR VALVE 3QF A/A, ACTUATOR VALVE 3QF B/C and GND (Ref. ASM 28-29/01) and (Ref. ASM 28-22/01).
C. Do the test as given in the Para. 3.
「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 204
Feb 01/98 CES
QUANTITY INDICATING - FAULT ISOLATION PROCEDURES
________________________________________________
TASK 28-42-00-810-801
Fuel Quantity Indication Computer (FQIC) 3QT
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
WARNING : WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST
_______ EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT, E.G. EN50-020, UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.
1. Possible Causes
_______________
- FQIC (3QT)
- the quality of the aircraft fuel is unknown
- water in the tanks
- microbiological contamination of the aircraft fuel tanks
- FQIS fuel tank harness
- fused connector/adaptor
- fuel probe
- aircraft wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
28-42-00-810-807 Fuel Quantity/CIC Probe 24QT1(2), Left(Right) Wing
Tank 28-42-00-810-822 Fuel Quantity/CIC Probe 39QT, Center Tank 28-42-00-810-848 FQIS - Attitude Data From the ADIRUs is Possibly
Incorrect 28-42-00-810-874 FQIS and ECAM FQIs Fluctuate When ADIRS is set to off ESPM 20-00-00 IPC 28-42-34 AMM 12-11-28-650-003 Pressure Refuel with Automatic Control AMM 12-11-28-650-004 Pressure Refuel with Manual Control AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
External Power AMM 28-11-00-600-004 Biobor Biocidal Shock Treatment - With Fuel Mixed R with Biocide Additive (OBSOLETE) AMM 28-11-00-600-007 Introduce Biobor Biocide into Fuel - With Fuel Mixed
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