25QA(22QA)
ASM 28-21/01
「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 B213
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3. Fault Confirmation
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A. Table of the circuit breakers used in this procedure:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU FUEL/L WING TK/PUMP1 SPLY 1QA N23 121VU FUEL/R WING TK/PUMP1 SPLY 2QA Q23 123VU L WING TK/PUMP 1/STBY SPLY 11QA AD12 123VU R WING TK/PUMP 1/STBY SPLY 12QA AE12
B. Test
(1) Not applicable.
(2) Do not close (reset) the C/Bs given in the Table.
4. Fault Isolation
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A. Procedure
(1) Make sure that the L(R) TK PUMPS 1 P/BSW 13QA(14QA) shows OFF (released out).
(2) Make sure that the EMER ELEC PWR/GEN 1 LINE P/BSW (13XU) shows OFF (released out).
(3) Examine these C/Bs:
- FUEL/L WING TK/PUMP 1 SPLY 1QA (FUEL/R WING TK/PUMP 1 SPLY 2QA)
- L WING TK/PUMP 1 STBY SPLY 11QA (R WING TK/PUMP 1 STBY SPLY 12QA).
(4) If the left wing tank fuel pump No. 1 C/Bs 1QA and 11QA have opened (tripped), do these Tasks:
(a) Fuel Pumps - C/B-FUEL/L(R) WING TK/PUMP 1 SPLY 1QA(2QA) Tripped (Ref. TASK 28-21-00-810-827).
(b) Fuel Pumps - Left Wing Tank Pump-Fuel No 1 System Failure (Normal Supply) (Ref. TASK 28-21-00-810-801).
(5) If the right wing tank fuel pump No. 1 C/Bs 2QA and 12QA have opened (tripped), do these Tasks:
(a) Fuel Pumps - C/B-FUEL/L(R) WING TK/PUMP 1 SPLY 1QA(2QA) Tripped (Ref. TASK 28-21-00-810-827).
(b) Fuel Pumps - Right Wing Tank Pump-Fuel No 1 System Failure (Normal Supply) (Ref. TASK 28-21-00-810-802).
「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 B214
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(6) If the left(right) wing tank fuel pump No. 1 C/B-11QA(12QA) has opened (tripped):
(a) Do a check of, and replace if necessary:
(b) Use a multimeter and do an electrical check (Ref. ASM 28-21/01) of the aircraft wiring (three phase electrical standby supply) between the:
1_ The C/B-L WING TK/PUMP 1/STBY SPLY (11QA) (C/B-R WING TK/PUMP
1/STBY SPLY (12QA)).
2_ The CT-AC, 1 (42XU3) (Ref. AMM TASK 24-22-17-000-001) and
(Ref. AMM TASK 24-22-17-400-001).
3_ The CNTOR-L WING TK STBY SPLY, PUMP 1 (53QA) (CNTOR-R WING TK
STBY SPLY, PUMP 1 (54QA)).
- C/B-L(R) WING TK/PUMP 1/STBY SPLY 11QA(12QA) and the CNTOR-L(R) WING TK STBY SPLY, PUMP 1 53QA(54QA).
NOTE : The wiring from 11QA and 12QA goes through the same
____ Current Transformer (CT)-Alternating Current (AC) (42XU3), (Ref. AMM TASK 24-22-17-000-001). It is a three hole CT and contains three toroidal transformers. One phase line (from each of the fuel pump three phase electrical stand-by supplies) goes through one of the three different toroidal transformers. Two fuel pump related lines of the same phase, therefore, go through each toroidal transformer in the same direction.
(c) Repair the unserviceable wiring and connectors.
(d) Close (set) the C/B-11QA(12QA).
(7) Energize the Aircraft Electrical Circuits from Engine 1 (Ref. AMM TASK 24-41-00-861-002).
(8) If the C/B-11QA(12QA) opens, when the FAULT legend of the GEN 1 pushbutton switch goes off, do the steps in Para. 4.A.(6). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 FUEL 燃油2(9)
