3. Fault Confirmation
__________________
A. Test
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (ECAM only) (Ref. AMM TASK 31-60-00-860-001).
(3) At the ECAM control panel (11VU) push (in) the FUEL P/BSW.
(a) Make sure that the FUEL page is shown on the ECAM system (lower) display page.
(4) At the fuel panel (40VU), push (in) the P/BSW-FUEL/X FEED (4QE).
(5) If the crossfeed valve P/BSW-4QE:
(a) ON legend (white) and OPEN legend (green) come on and the valve symbol on the FUEL page is green in-line (there is no fault), do Para. 4.A.(4).
(b) ON legend (white) does not come on, do Para. 4.A. step (1).
(c) OPEN legend (green) does not come on and the valve symbol shows amber cross-line on the ECAM FUEL page, do Para. 4.A. step (2).
(d) OPEN legend (green) does not come on but the valve symbol shows green in-line on the ECAM FUEL page, do Para. 4.A. step (3).
4. Fault Isolation
_______________
A. Procedure
(1) The ON legend (white) does not come on
(a) Do the procedure for the operational test of the annunciator light test system in the cockpit (Ref. AMM TASK 33-14-00-710-001).
1 If the ON legend light does not come on, replace the ON
_ indicator light (lamp/filament/bulb).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞28-23-00∞∞∞∞∞∞∞∞∞∞Page 206
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R (b) If the fault continues:
R 1_ Do a check (Ref. ASM 28-23/01) of the P/BSW-FUEL/X FEED (4QE)
R and if necessary replace it.
R 2_ Do a check (Ref. ESPM 20-00-00) of the aircraft wiring between
R the P/BSW-FUEL/X FEED (4QE) terminal C1 and the panel 40VU
R ground point (Ref. ASM 28-23/01) (Ref. AWM 28-23-01) and (Ref.
R AWM 24-91-07).
R 3_ Repair all the unserviceable wiring and connectors (Ref. ESPM
R 20-00-00).
R (c) Do the test given in Para. 3.A.
R (2) The OPEN legend (green) does not come on and the valve symbol shows
R amber cross-line on the ECAM FUEL page
R (a) Do a check of the actuator crossfeed valve 5QE see/feel indicator
R to see if it shows open or closed.
R (b) If the actuator crossfeed valve 5QE see/feel indicator:
R
R - shows closed, do the procedure (Ref. TASK 28-23-00-810-801)
R
R - shows open, do step (c).
R
R (c) Replace the ACTUATOR-FUEL CROSSFEED VALVE (5QE) (Ref. AMM TASK
R 28-23-51-000-001) and (Ref. AMM TASK 28-23-51-400-001).
R NOTE : This step is necessary because although the actuator____
R crossfeed valve 5QE see/feel indicator has moved to the
R open position, the internal position indication
R microswitch (SHUT/OPEN contacts between pins D and E of
R connector 5QE-A) and/or the related wiring can be
R unserviceable.
R (d) Do the test given in Para. 3.A.
R (3) The OPEN legend (green) does not come on but the valve symbol shows
R green in-line on the ECAM FUEL page
R (a) Do the procedure for the operational test of the annunciator
R light test system in the cockpit (Ref. AMM TASK 33-14-00-710-
R 001).
R 1_ If the OPEN legend light does not come on, replace the OPEN
R indicator light (lamp/filament/bulb).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞28-23-00∞∞∞∞∞∞∞∞∞∞Page 207
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R (b) If the fault continues:
R
R 1_ Do a check (Ref. ASM 28-23/01) of the P/BSW-FUEL/X FEED (4QE)
R and if necessary replace it.
R 2_ Replace the BOARD-ANN LT TEST & INTFC (6LP) (Ref. AMM TASK 33-R 14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001).
R 3_ Do a check (Ref. ESPM 20-00-00) of the aircraft wiring (Ref.
R ASM 28-13/01) between:
R - the connector 5QE-A, pin D and the BOARD-ANN LT TEST & INTFC
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本文链接地址：A320 Trouble Shooting Manual 排故手册 FUEL 燃油2(25)
