REFUELING ON BATTERY - FAULT ISOLATION PROCEDURES
_________________________________________________
 TASK 24-67-00-810-801
 Refueling not Possible
 1. Possible Causes
_______________
 - CNTOR-DC SVCE BUS GND SPLY (3PX)

 - CNTOR-DC SVCE BUS NORM SPLY (8PN)

 - RELAY - REFLNG NORM/BAT (5PR)

 - RELAY - REFLNG BUS 501PP CTL (8PR)

 - CTL PNL - REFUEL/DEFUEL (800VU)

 - wiring

 - C/B - REFLNG/501PP/BAT (1PR)

 - C/B - ELEC/RFL/SPLY/LOGIC (4PR)

 2. Job Set-up Information
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 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power AMM 24-43-55-000-001 Removal of the DC Service Bus Ground Supply Contactor (3PX) AMM 24-43-55-400-001 Installation of the DC Service Bus Ground Supply Contactor (3PX) AMM 24-61-55-000-001 Removal of the DC Service Bus Normal Supply Contactor (8PN) AMM 24-61-55-400-001 Installation of the DC Service Bus Normal Supply
 Contactor (8PN)
 AMM 28-25-55-000-001 Removal of the Refuel Panel 800VU
 AMM 28-25-55-400-001 Installation of the Refuel Panel 800VU
 ASM 24-67/01

 3. Fault Confirmation
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 A. Job Set-up
 (1) Aircraft Maintenance Configuration
 (a) Energize the aircraft electrical circuits
 (Ref. AMM TASK 24-41-00-861-002).

 B. Test
 No applicable, the fault is evident.

 4. Fault Isolation
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 A. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU ELEC/RFL/SPLY/LOGIC 4PR U29 122VU ELEC/REFLNG/ON/BAT 1PR U28
 B. If the refueling is not possible:
 - do a check of the battery 1 voltage.
 (1) If the voltage is correct:
 - do a check of the status of the circuit breakers (1PR) and (4PR).
 (a) If the circuit breakers are closed:
 - replace the RELAY - REFLNG NORM/BAT (5PR) and RELAY - REFLNG BUS 501PP CTL (8PR).
 1 If the fault continues:
_
 - replace the CNTOR-DC SVCE BUS GND SPLY (3PX) (Ref. AMM TASK 24-43-55-000-001) and (Ref. AMM TASK 24-43-55-400-001).
 2 If the fault continues:
_
 - replace the CNTOR-DC SVCE BUS NORM SPLY (8PN) (Ref. AMM TASK 24-61-55-000-001) and (Ref. AMM TASK 24-61-55-400-001).
 3 If the fault continues:
_
 - replace the CTL PNL - REFUEL/DEFUEL (800VU) (Ref. AMM TASK 28-25-55-000-001) and (Ref. AMM TASK 28-25-55-400-001).
 4 If the fault continues:
_
 - do a check and repair the wiring between respectively: . the circuit breaker (1PR) and the pin A/C1 of the relay (5PR) . the circuit breaker (4PR) and the pins A/X1 and A/A1 of the relay (5PR) . the pin A/X2 of the relay (5PR) and the ground, through the contactors (3PX and 8PN), the switch (10PR) or the relay (11PR), and the microswitch (20QU) . the pin A/C2 of the relay (5PR) and the pins A/A1, A/C1 and A/X1 of the relay (8PR) . the pin A/A2 of the relay (8PR) and the terminal block . the pin A/C2 of the relay (8PR) and the terminal block . the pin A/X2 of the relay (8PR) and the ground (Ref. ASM 24-67/01).

 (b) If the circuit breaker (1PR) is open:
 - close the circuit breaker.
 1_ If the circuit breaker (1PR) trips:
 - do a check of the wiring for a short to ground between:
 . the circuit breaker and the pins A/A1, A/C1 and A/X1 of
 the relay (8PR)
 . the pin A/A2 of the relay (8PR) and the terminal block
 . the pin A/C2 of the relay (8PR) and the terminal block
 (Ref. ASM 24-67/01).

 a If the wiring is not correct:
_
 - repair it. b If the wiring is correct:
_ - replace the C/B - REFLNG/501PP/BAT (1PR).
 (c) If the circuit breaker (4PR) is open:
 - close the circuit breaker. 1 If the circuit breaker (4PR) trips:
_
 - do a check of the wiring between the circuit breaker and the pin A/X1 of the relay (5PR) (Ref. ASM 24-67/01).
 a If the wiring is not correct:
_
 - repair it. b If the wiring is correct:
_ - replace the C/B - ELEC/RFL/SPLY/LOGIC (4PR).
　
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 電源 3(157)