- the pressure switch fuel supply pipe-line between the fuel pump canister 85QM and the pressure switch 40QA.
NOTE : The first section of the fuel supply pipe-line to the
____ pressure switch 40QA is also the primary supply to the center tank (right side) water scavenge jet pump 90QM.
1 Repair/replace the components that are unserviceable.
_
2 Do the Functional Test of the Center Tank Fuel Control (Manual
_ Mode) (Ref. AMM TASK 28-21-00-720-001).
(j) If the P/BSW-FUEL/CTR TK/PUMP 2 (34QA) FAULT legend stays on, do a check of the aircraft wiring (low pressure lines) (Ref. ASM 28-21/03) between the:
- pressure switch connector 40QA-A, pin C and the relay-42QA, terminal 1
- pressure switch connector 40QA-A, pin C and the FLSCU-2 rack connector 9QJ-AA, terminal 12C
- pressure switch connector 40QA-A, pin C and the SDAC-1 rack connector 1WV1-AD, terminal 13D
- pressure switch connector 40QA-A, pin C and the SDAC-2 rack connector 1WV2-AD, terminal 13D
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page A245
201-299, 401-499, Aug 01/05 CES
- relay-42QA, terminal A and the relay-50QA, terminal 1
- relay-50QA, terminal A and the BOARD-ANN LT TEST & INTFC connector 2LP-A, terminal 14
- BOARD-ANN LT TEST & INTFC connector 2LP-A, terminal 13 and the P/BSW-FUEL/CTR TK/PUMP 2 connector 34QA-A, terminal 7.
NOTE : A short circuit to ground on one of these lines will
____
cause:
- a false LO PR warning to be generated within the FWC
- the FAULT legend/lamp to come on incorrectly. It is possible that a short circuit to ground on the above lines can come from one of the LRUs as follows:
- BOARD-ANN LT TEST & INTFC (2LP)
- FLSCU-2 (9QJ)
- SDAC-1 (1WV1)/SDAC-2 (1WV2)
- RELAY-CTR TK AUTO CONTROL, PUMP 2 (42QA)
- RELAY-CTR TK FAULT INHIBIT, PUMP 2 (50QA).
(k) Repair the unserviceable wiring and connectors.
(l) Do the Functional Test of the Center Tank Fuel Control (Manual Mode) (Ref. AMM TASK 28-21-00-720-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page A246
201-299, 401-499, Aug 01/05 CES
R **ON A/C ALL
TASK 28-21-00-810-815
Fuel Pumps - RELAY-BUS 1/ESS, L(R) TK PUMP 1 Failure Indication at Engines Start WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______ R WARNING : WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST
_______ R EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL R SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT, E.G. EN50-020, R UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE R FIRE OR AN EXPLOSION.
1. Possible Causes
_______________
- RELAY-BUS 1/ESS, R TK PUMP 1 (63QA), 103VU
- RELAY-BUS 1/ESS, R TK PUMP 1 (64QA), 103VU
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 24-22-00-710-001 Operational Test of the Generator Line Contactor (GLC-1) Opening in the Smoke Procedure ASM 28-21/01
3. Fault Confirmation
__________________
A. Do the Operational Test of the Generator Line Contactor GLC-1) Opening in the Smoke Procedure (Ref. AMM TASK 24-22-00-710-001).
4. Fault Isolation
_______________
A. If after the first engine (ENG No. 2) start:
- the FUEL - ECAM WARNING, L(R) TK PUMP 1 LO PR WARN is given before the second engine (ENG No. 1) start
- and after the second engine (ENG No. 1) start, the same warning is not given.
(1) Check (Ref. ASM 28-21/01)/replace the RELAY-BUS 1/ESS, R TK PUMP 1 (63QA), 103VU or RELAY-BUS 1/ESS, R TK PUMP 1 (64QA), 103VU.
(2) Do the test given in Para 3.A.
「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 ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page A247
May 01/04 CESR **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
TASK 28-21-00-810-816
Fuel Pumps - Center Tank Autofeed Warning and/or FAULT Legend Failure
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