A320 Trouble Shooting Manual 排故手册 FUEL 燃油1(84)

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R  a_  Continuity test, with a multimeter, of each three phase
R  wire (from end to end) (Ref. ESPM 20-52-21). 
R  b_  Insulation test, with a 500VDC insulation tester, between
R  each phase wire (pole) and ground (Ref. ESPM 20-52-24). 
R  c_  Insulation test, with a 500VDC insulation tester, between
R  each phase wire and the other two wires (pole to pole) 
R  (Ref. ESPM 20-52-24). 
R  d_  If during the wiring test in step 23_ the wiring is
R  unserviceable, repair/replace the unserviceable wiring and 
R  connectors. 
R  e_  If the fuel pump supply cable is found to be unserviceable
R  (where it is routed across the lower surface of the wing) 
R  repair as follows:

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 301-399, ∞∞28-21-00∞∞∞∞∞∞∞∞∞∞Page 241
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R  CAUTION : DO NOT USE IN-LINE SPLICES TO REPAIR SECTIONS OF_______ 
R  ELECTRICAL CABLE THAT ARE BEHIND A FAIRING OR IN 
R  A CONDUIT. 
R  THIS WILL MAKE SURE THAT IT IS POSSIBLE TO SEE 
R  THE REPAIR FOR AN INSPECTION (REF. ESPM 
R  20-53-29). 
R  f_  If necessary, replace the unserviceable:
R  - protective sleeve 
R  - wire(s) 
R  - connector 22QA-A. 
R  g_  Connect the new wire(s) of the fuel pump supply cable where
R  the wiring passes through the junction box (bracket 
R  assembly), by a splice(s) (Ref. ESPM 20-53-21). 
R  h_  Make sure that the length of the new supply cable when
R  assembled, between the front face of the connector 22QA-A 
R  and the forward face of the cable guide (that shows outside 
R  the wing-skin) is 1320 mm (51.9685 in.). 
R  i_  If necessary, make a final adjustment in the length of the
R  supply cable across the lower surface of the wing during 
R  the installation of the rear fairing. 
R  j_  Feed the surplus cable (small amount only) back up the
R  flexible conduit to the junction box (bracket assembly) on 
R  the rear spar. 
R  k_  Make sure that the supply cable is held tight by the P-clip
R  at the cable guide. 
R  NOTE : It is important that the fuel pump supply cable is____ 
R  installed correctly as given in steps g_ thru k_. 
R  Incorrect installation of the cable can cause it to 
R  get damaged. If the cable is too short it will put 
R  tension on the wires and plug. If the cable is too 
R  long you will not be able to install the fairings 
R  correctly. This is because the unwanted cable 
R  (excess length) will become looped and get trapped 
R  during the installation of the intermediate and rear 
R  fairings. 
R  l_  Install the front cover of the contactor box 107VU.
R  m_  Connect the connector 22QA-A to the fuel pump receptacle.
R  n_ Do the test given in Para. 3.B.(2)(b).

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R (3) If the fuel transfers:
R (a) During the fuel transfer, disconnect the free connector 24QA-A R from the PRESS SW-FUEL PUMP No. 1, R WING TK (24QA) (Ref. AMM R TASK 28-21-15-000-003).
R (b) If the P/BSW-FUEL/R TK PUMPS/1 (14QA) FAULT legend stays on go to R step (d). If the P/BSW-FUEL/R TK PUMPS/1 (14QA) FAULT legend goes R off: R - do a check of and replace, if necessary, the PRESS SW-FUEL PUMP R NO 1, R WING TK (24QA) (Ref. AMM TASK 28-21-15-000-003) and R (Ref. AMM TASK 28-21-15-400-001).
R NOTE : If an ADAPTOR - SEQUENCE VALVE (99A28404000000) is
____ R available, the fuel pump fuel pressure can be measured at R the sealing valve outlet. This can be installed in place R of the pressure switch 24QA.
R (c) If the fault continues, or if no fuel pressure is shown on the R gage of the ADAPTOR - SEQUENCE VALVE, make sure that these R components are in the correct condition: R - the pressure switch sealing valve R - the pressure switch plug (banjo adaptor attachment bolt) R - the pressure switch fuel supply pipe-line between the fuel pump R canister 3QM and the pressure switch 24QA.
　
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