3. Fault Confirmation
__________________
A. Do the operational test of the Yellow electric pump (Ref. AMM TASK 29-24-00-710-001).
4. Fault Isolation
_______________
A. If the test gives: R - the HYD Y ELEC PUMP LO PR on the upper ECAM DU, R - the triangle symbol of the Yellow E-pump on the HYD page of the lower R ECAM DU in amber R - the YELLOW ELEC PUMP P/BSW FAULT on panel 40VU:
- examine if the ELEC PUMP-Y (3075GX) operates.
(1) If the ELEC PUMP-Y (3075GX) operates:
- look on the lower ECAM DU and do a check of the pressure indication.
(a) If the pressure is less than 1450 psi (99.9739 bar):
1 Do a check of the nitrogen charge pressure of the Yellow
_ hydraulic power accumulator (Ref. AMM TASK 29-10-00-200-008).
a If necessary, replace the ACCU-Y PWR (3070GM) (Ref. AMM
_ TASK 29-13-42-000-001) and (Ref. AMM TASK 29-13-42-400-001).
R 2_ If the fault continues:
R a_ Replace the CHECK VALVE-ENG 2 PUMP DELIVERY, Y (3050GM)
R (Ref. AMM TASK 29-13-36-000-001) and (Ref. AMM TASK 29-13-R 36-400-001).
R 3_If the fault continues:
a Replace the ELEC PUMP-Y (3075GX) (Ref. AMM TASK 29-24-51-
_ 000-001) and (Ref. AMM TASK 29-24-51-400-001).
(b) If the pressure is more than 1450 psi (99.9739 bar):
R 1_ Replace the CHECK VALVE-ENG 2 PUMP DELIVERY, Y (3050GM) (Ref.
R AMM TASK 29-13-36-000-001) and (Ref. AMM TASK 29-13-36-400-R 001).
R
R 2_Do a check for continuity between: the PRESS SW-FLT CTL, Y (3151GN) connector A/A and the connector A/C (Ref. ASM 29-32/01).
R
「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 ∞∞29-24-00∞∞∞∞∞∞∞∞∞∞Page 202
Nov 01/04 CESR b_If there is no continuity:
R a_ If there is continuity:
- replace the PRESS SW-FLT CTL, Y (3151GN) (Ref. AMM TASK
29-32-12-000-003) and (Ref. AMM TASK 29-32-12-400-003).
R
- do a check of the wiring for a GND connection between: the PRESS SW-FLT CTL, Y (3151GN) connector A/C (Ref. ASM 29-32/01) and the FWC connector AD/06E (Ref. ASM 31-52/02).
R c_If there is a GND connection:
- repair the wiring as neccesary.
(2) If the ELEC PUMP-Y (3075GX) does not operate:
- do a check of the red indicator light on the DET-PHASE UNBALANCE, Y ELEC PUMP (3808GX).
(a) If the red indicator light is on:
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL
_______ SURFACES ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
- put the YELLOW ELEC PUMP P/BSW (3804GX) on panel 40VU in the OFF position ( OFF light is on and the red indicator light on the DET-PHASE UNBALANCE, Y ELEC PUMP (3808GX) goes off),
- put the YELLOW ELEC PUMP P/BSW (3804GX) in the ON position (ON light comes on),
- look at the lower ECAM DU and examine if the ELEC PUMP-Y (3075GX) operates:
1 If the ELEC PUMP-Y (3075GX) does not operate and the red
_ indicator light on the DET-PHASE UNBALANCE, Y ELEC PUMP (3808GX) comes on again:
- replace the ELEC PUMP-Y (3075GX) (Ref. AMM TASK 29-24-51-000-001) and (Ref. AMM TASK 29-24-51-400-001).
2 If the ELEC PUMP-Y (3075GX) operates at normal pressure and
_ the red indicator light on the DET-PHASE UNBALANCE, Y ELEC PUMP (3808GX) does not come on:
- no further actions are necessary
(b) If the red indicator light is not on:
- do a check for 115 VAC between: the ELEC PUMP-Y (3075GX) connectors A/G and A/A, A/B, A/C (Ref. ASM 29-24/01).
1 If there are 115 VAC:
_
- replace the ELEC PUMP-Y (3075GX) (Ref. AMM TASK 29-24-51-000-001) and (Ref. AMM TASK 29-24-51-400-001).
「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 ∞∞29-24-00∞∞∞∞∞∞∞∞∞∞Page 203
Nov 01/04 CES a If there are 28 VDC:
2_ If there are no 115 VAC:
- do a check for 28 VDC between the DET-PHASE UNBALANCE, Y
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