(m) Disconnect the relay coil from the PSU.
(n) With a multimeter measure the resistance of the relay coil, between pins X1 and X2.
(o) Make sure the resistance of the coil is between 288 and 352 ohms.
(p) Measure the contact resistance of the two sets of contacts with the relay:
- energized, between pins A2 to A1, and B2 to B3, using PSU connected as in Steps (5)(a) and (5)(b).
- not energized, between pins A2 to A3, and B2 to B3.
(q) Make sure the contact resistance is less than 0.1 ohms.
(6) Replace the relay if any measurements taken/made in Para. 4.A.(5) are outside the specification given.
「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 263
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(7) If a relay is replaced in Para. 4.A.(6), replace the related latch relay as shown in the table that follows:
---------------------------------------------| RELAY REPLACED | LATCH RELAY TO BE REPLACED | |----------------|----------------------------|
| 5QP | 13QP |
| 6QP | 13QP |
| 7QP | 14QP |
| 8QP | 14QP |
---------------------------------------------NOTE : The action called for in Para. 4.A.(7) is necessary to make
____ sure there is no residual contact damage.
(8) Do the test given in Para. 3.A.
(9) If no fault was found with relays 5QP, 6QP, 7QP, or 8QP, remove relays 13QP, and 14QP, one at a time and continue.
(10) Remove the relay from its location (socket).
(11) Carefully examine the relay for visible damage or blackened pins.
(12) If the relay is damaged or marked replace the relay.
(13) Measure the contact resistance of the two sets of contacts with the relay not energized.
NOTE : The energized contacts are not used.
____
(14) Make sure the contact resistance is less than 0.1 ohms.
(15) Replace the relay if any measurements taken/made are outside the specification given.
(16) Do the test given in Para. 3.A.
(17) Refit the relay in its location (socket) if it passes all sections of the specification given.
(18) Do the test given in Para. 3.A.
(19) If no specific relay failure can be found or the fault returns on subsequent flight(s), replace all these relays as follows:
- RELAY-L WING TK LOW LEVEL CHANNEL A (5QP) - 103VU126
- RELAY-R WING TK LOW LEVEL CHANNEL B (6QP) - 103VU126
- RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) - 103VU126
- RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) - 103VU126
- RELAY-L OR R REAR XFR VALVE OPEN LATCH (13QP) - 103VU126
- RELAY-R OR R FWD XFR VALVE OPEN LATCH (14QP) - 103VU126.
「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 264
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(20) 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 265
201-299, 401-499, Aug 01/05 CES
TASK 28-15-00-810-817
Intercell XFR System - Both Valves Show in Transit, CFDS (FUEL) Reports All Valves
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
1. Possible Causes
_______________
- Left Wing Forward Intercell XFR VALVE 27QM/70QM/9QP failure
- Left Wing Rear Intercell XFR VALVE 28QM/71QM/11QP failure
- Right Wing Forward Intercell XFR VALVE 29QM/72QM/10QP failure
- Right Wing Rear Intercell XFR VALVE 30QM/73QM/12QP failure
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
28-15-00-810-818 Intercell XFR System - Left Valve Shows in Transit, CFDS (FUEL) Reports L/FWD Valve 28-15-00-810-819 Intercell XFR System - Left Valve Shows in Transit, CFDS (FUEL) Reports L/REAR Valve 28-15-00-810-820 Intercell XFR System - Right Valve Shows In Transit, CFDS (FUEL) Reports R/FWD Valve 28-15-00-810-821 Intercell XFR System - Right Valve Shows In Transit, CFDS (FUEL) Reports R/REAR Valve AMM 28-46-00-740-001 Functional (BITE) Test
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本文链接地址：A320 Trouble Shooting Manual 排故手册 FUEL 燃油1(47)
