(13) Repair all the unserviceable wiring and connectors.
(14) 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 273
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TASK 28-15-00-810-820
Intercell XFR System - Right Valve Shows In Transit, CFDS (FUEL) Reports R/FWD
Valve
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
WARNING : WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST
_______ EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT, E.G. EN50-020, UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.
1. Possible Causes
_______________
- ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP)
- aircraft wiring
- RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) 103VU
- RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) 103VU
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific multimeter
B. Referenced Information
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REFERENCE DESIGNATION
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AMM 28-15-00-710-002 Operational Check of Individual Transfer Valves to
Ensure Valve Shaft Rotates Valve to Open Position AMM 28-15-51-000-001 Removal of the Actuator 9QP(10QP) AMM 28-15-51-400-001 Installation of the Actuator 9QP(10QP) ASM 28-15/02
3. Fault Confirmation
__________________
A. Do the Operational Test of the Intercell Transfer Valves (Ref. AMM TASK 28-15-00-710-002).
NOTE : The intercell transfer valves (ICTVs) are motor driven and the
____ power for these circuits is derived from the main power. The ICTVs are immobilized on battery power.
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4. Fault Isolation
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A. If the Right Intercell Transfer Valve continues to be shown in transit on the FUEL System Display, and the CFDS(FUEL) reports the Right Foward Valve, disconnect the electrical connector from the ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP).
NOTE : During normal Actuator-Transfer Valve, Right Forward Spar (10QP)
____ 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 28-15/02) to see if:
- 28VDC is at pin B
- 0VDC is at pin A.
(2) Open the C/B-FUEL/XFR VALVE 2/WING/L (3QP), M22 at 121VU.
(3) Check with a multimeter, at the electrical supply cable connector (Ref. ASM 28-15/02) to see if:
- 28VDC is at pin A
- 0VDC is at pin B.
(4) Close the C/B-FUEL/XFR VALVE 2/WING/L (3QP), M22 at 121VU.
(5) If the voltages at pins A and B of the connector correct, (as in (1) and (3) above), check/replace the ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP), (Ref. AMM TASK 28-15-51-000-001), and (Ref. AMM TASK 28-15-51-400-001).
(a) While the actuator is removed from the aircraft confirm that the transfer valve drive shaft and valve are free to rotate.
(b) Repair/replace any unserviceable items found in (a).
(6) If no 28VDC is measured at either pins A and B of the electrical supply cable connector, (as in (1) and (3) above).
(a) Check with a multimeter to see if 28VDC is available at:
- terminal A2, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
- terminal X1, RELAY-L WING TK LOW LEVEL CHANNEL B (7QP).
(b) If the 28VDC is not available do a wiring check (Ref. ASM 28-15/02) of the aircraft wiring between the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) and the C/B-FUEL/XFR VALVE 2/WING/L (3QP).
(c) Repair all the unserviceable wiring and connectors.
(d) Check with a multimeter to see if 28VDC is available at:
- terminal A2, RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) 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(51)
