R (2) If the fuel starts to transfer go to step (3). If the fuel does not
R start to transfer:

R (a) Set the L TK PUMPS 2 P/BSW (15QA) to OFF (release out). This will
R de-energize the contactor 19QA.

R (b) Before you do more steps, make sure that the wing area adjacent
R to the left inner fuel pump 25QA fairings and cover is not
R contaminated with fuel from a fuel leak or spillage.

R 1_ If necessary:

R a_ Repair all the leaks:
R - (Ref. AMM TASK 51-76-12-300-001)
R - (Ref. AMM TASK 51-76-12-300-002)
R - (Ref. SIL 57-0086).

R b_ Clean the area of the fuel spillage.

R (c) Remove all the fuel pump 25QA cable fairings (Ref. AMM TASK 28-R 21-49-000-001) and cover assembly (Ref. AMM TASK 28-21-51-000-R 001).

R (d) Disconnect the supply cable end connector 25QA-A from the fuel
R pump receptacle.

R (e) If, in step (c) or (d), any damage can be seen on the supply
R cable or the aircraft structure, go to step (j) 1_.

R (f) Set the L TK PUMPS 2 P/BSW (15QA) to ON (push in). This will
R energize the contactor 19QA and the 115VAC three phases will be
R supplied to the fuel pump connector 25QA-A.

R (g) Use a multimeter to do a test, to make sure that each of the
R 115VAC three phases are available at the connector 25QA-A (Ref.
R ASM 28-21/02).

R (h) Set the L TK PUMPS 2 P/BSW (15QA) to OFF (release out). This will
R de-energize the contactor 19QA.

R 1_ Use a multimeter to do a test, to make sure that each of the
R 115VAC three phases are not available at the connector 25QA-A.

R NOTE : This is to make sure that the contactor 19QA does not

____ R stay in the on position (stuck/held on).
R (i) If the 115VAC three phase supply voltage measured in step (g) is R correct, replace the PUMP-FUEL NO 2, L WING TK (25QA) (Ref. AMM R TASK 28-21-51-000-001) and (Ref. AMM TASK 28-21-51-400-001).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 301-399, ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page 263
 May 01/04 CES

 (j) If the 115VAC three phase supply voltage measured in step (g) is not correct (no voltage, incorrect voltage or a phase is missing), do all the sub-steps that follow:
 1 Clean and dry:
_

 - all the fuel pump cable fairings

 - the fuel pump cover assembly

 - the fuel pump supply cable and the related end connector

 - the aircraft wing structure adjacent to the route of the supply cable across the wing surface

 - the aircraft wing structure at the rear spar, adjacent to the landing light, where the fuel pump supply cable leaves the conduit and passes through the cable guide (bottom skin).

 2 Make sure that good lighting is available.
_ Do a visual inspection and look for distortion (pinched or streched) damage (chafed or cut), discoloration, overheating (burnt/melted or arcing) liquid contamination, loose electrical connection or incorrect assembly, of the items that follow:
 - the electrical receptacle

 - the supply cable end connector 25QA-A

 - the supply cable

 - the cable guide

 - the fuel pump fairings

 - the aircraft wing structure adjacent to the route of the supply cable (across the wing surface and at the rear spar)

 - junction box (bracket assembly) on the rear spar.

 NOTE : Incorrect installation of the fuel pump fairings can
____ damage the supply cable. This can cause electrical arcing and damage to the aircraft structure.
 3 If any damage (electrical wiring, fairing or structural) is
_ found, tell AIRBUS within 10 days.
 4 If the aircraft structure is damaged, refer to Skins and
_ R Plating - Allowable Damage, P. Block 101, (Ref. ASRM 57-21-11).
 5 If necessary, replace the damaged fairings with serviceable
_
 items.

 6 If the fuel pump supply cable between the connector 25QA-A and
_ the related junction box (bracket assembly) on the rear spar is seen to be damaged, repair as follows:
 「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 : 301-399, ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page 264
 May 01/05 CES

R CAUTION : DO NOT USE IN-LINE SPLICES TO REPAIR SECTIONS OF
_______
R ELECTRICAL CABLE THAT ARE BEHIND A FAIRING OR IN A
R CONDUIT.
R THIS WILL MAKE SURE THAT IT IS POSSIBLE TO SEE THE
R REPAIR FOR AN INSPECTION (REF. ESPM 20-53-29).

R a_ If necessary, replace the unserviceable:
R - protective sleeve
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 FUEL 燃油1(94)