4. Fault Isolation
_______________
A. If the Right Intercell Transfer Valve continues to show XX on the FUEL System Display (lower ECAM DU), and the CFDS(FUEL) reports the Right Rear Valve, disconnect the electrical connector from the ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP).
NOTE : During normal Actuator-Transfer Valve, Right Rear Spar (12QP)
____ operation, 28VDC is supplied to the electrical connector: - on the pin A for OPEN - on the pin B for SHUT.
(1) Check with a multimeter, at the electrical supply cable connector (Ref. ASM 28-15/01) to see if:
- 28VDC is at pin B
- 0VDC is at pin A.
(2) Open the C/B-FUEL/XFR VALVE 1/WING/L (1QP), A10 at 49VU.
(3) Check with a multimeter, at the electrical supply cable connector (Ref. ASM 28-15/01) to see if:
- 28VDC is at pin A
- 0VDC is at pin B.
(4) Close the C/B-FUEL/XFR VALVE 1/WING/L (1QP), A10 at 49VU.
(5) If the voltages at pins A and B of the connector are correct, (as in
(1) and (3) above), reconnect the electrical connector to the actuator.
(6) On the CFDS(FUEL) Input Parameters Page 3, examine the bit postions:
- G4 - RIGHT REAR ICT VALVE OPEN
- H4 - RIGHT REAR ICT VALVE SHUT.
If both of the positions show a 1, check/replace the
ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP), (Ref. AMM TASK 28-15-51-000-002), and (Ref. AMM TASK 28-15-51-400-002).
(7) Do the test given in Para 3.A.
(8) If the fault continues do a wiring check (Ref. ASM 28-15/01) of the aircraft wiring:
- between the pin A, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the terminal A3, RELAY-R WING TK LOW LEVEL CHANNEL B (6QP)
- between the pin B, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the terminal B1, RELAY-L WING TK LOW LEVEL CHANNEL A (5QP)
- between the pin C, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the pin 13B, connector B, FQIC (3QT)
- between the pin D, ACTUATOR-TRANSFER VALVE, R REAR SPAR (12QP) and the pin 14B, connector B, FQIC (3QT).
NOTE : In the above wiring checks it is important to test for short
____ circuits between the lines mentioned (pole to each pole).
「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, ∞∞28-15-00∞∞∞∞∞∞∞∞∞∞Page 292
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(9) Repair all the unserviceable wiring and connectors.
(10) Do the test given in Para 3.A.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-15-00∞∞∞∞∞∞∞∞∞∞Page 293
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INTERCELL TRANSFER - TASK SUPPORTING DATA
_________________________________________
1. General
_______
The diagrams that follow are to help you do the trouble-shooting tasks.
For the Inter Cell Transfer Valve System:
- Physical Layout see
(Ref. Fig. 301)
- Block Diagram see
(Ref. Fig. 302)
「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, ∞∞28-15-00∞∞∞∞∞∞∞∞∞∞Page 301
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Inter Cell Transfer System - Physical Layout
Figure 301
「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, ∞∞28-15-00∞∞∞∞∞∞∞∞∞∞Page 302
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Inter Cell Transfer System - Block Diagram
Figure 302
「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, ∞∞28-15-00∞∞∞∞∞∞∞∞∞∞Page 303
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2. Maintenance Notices 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(58)
