(c) If the fault continues:
- do a check of the internal leakage of the Blue hydraulic system (Ref. AMM TASK 29-00-00-280-002).
1 If the internal leakage rate is too high:
_ - repair the defective component.
2 If the fault continues, or you can not find a defective
_
component:
- take a fuel sample from each water drain-valve (Ref. AMM TASK 12-32-28-281-001),
- do a check for contamination of the fuel with hydraulic fluid after each removal of a fuel sample.
a If you find hydraulic fluid contamination in one or more
_
fuel samples:
- do a check of the hydraulic lines and components in the applicable tank area for leaks and repair them.
C. If the Fault Confirmation gives:
- the message HYD B RSVR LO LVL on the upper ECAM DU,
- the BLUE ELEC PUMP P/BSW FAULT on panel 40VU:
- the single chime and the MASTER CAUT lights come on,
- do a visual check of the quantity shown on the mechanical indicator of the Blue reservoir.
(1) If the quantity shown is less than 1.8 l (0.4755 USgal):
- replace the QUANTITY INDICATOR - TRANSMITTER (Ref. AMM TASK 29-12-41-000-002) and (Ref. AMM TASK 29-12-41-400-002).
(2) Make sure that the drain valve of the hydraulic reservoir has no leaks.
(a) If the drain valve has a leak:
- replace the drain valve.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞29-12-00∞∞∞∞∞∞∞∞∞∞Page 219
May 01/05R CES
(b) If the drain valve has no leaks:
- do a check of the hydraulic lines and components for leaks (Ref. AMM TASK 29-00-00-790-001) and repair them.
(c) If the fault continues:
- do a check of the internal leakage of the Blue hydraulic system (Ref. AMM TASK 29-00-00-280-002).
1 If the internal leakage rate is too high:
_ - repair the defective component.
2 If the fault continues, or you can not find a defective
_
component:
- take a fuel sample from each water drain-valve (Ref. AMM TASK 12-32-28-281-001),
- do a check for contamination of the fuel with hydraulic fluid after each removal of a fuel sample.
a If you find hydraulic fluid contamination in one or more
_
fuel samples:
- do a check of the hydraulic lines and components in the applicable tank area for leaks and repair them.
D. If the Fault Confirmation gives:
-the message HYD B RSVR LO LVL on the upper ECAM DU
-the contents indication (shows normal fluid level) on the lower ECAM DU
in green,
-the BLUE ELEC PUMP P/BSW FAULT on panel 40VU,
-the single chime and the MASTER CAUT lights come on,
- do a visual check of the quantity shown on the mechanical indicator of the Blue reservoir.
(1) If the quantity shown on the indicator is normal:
(a) Remove the SDAC1 and the SDAC2 (Ref. AMM TASK 31-55-34-000-001).
(b) Remove the connector from the LOW LEVEL SWITCH.
(c) Do a check of the wiring for a ground signal between: the LOW LEVEL SWITCH connector B/B and the SDAC1 connector AB/6E (Ref. ASM 29-31/01) and (Ref. ASM 31-54/01).
1 If there is a ground signal:
_ - repair the wiring.
(d) Install the SDAC1 and SDAC2 (Ref. AMM TASK 31-55-34-400-001).
(e) Install the connector of the LOW LEVEL SWITCH.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞29-12-00∞∞∞∞∞∞∞∞∞∞Page 220
May 01/05R CES
(2) If there is no ground signal or the fault continues:
- Replace the LOW LEVEL SWITCH (Ref. AMM TASK 29-12-41-000-003) and (Ref. AMM TASK 29-12-41-400-003).
E. Do the operational test of the fluid low level warning (Ref. AMM TASK 29-31-00-710-001) to make sure that the operation is correct (no message shown).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞29-12-00∞∞∞∞∞∞∞∞∞∞Page 221
May 01/05R
CES
TASK 29-12-00-810-804
Loss of the Pressure of the Blue Electric Pump
1. Possible Causes
_______________
- ELEC PUMP-B (2075GJ)
- ACCU-B PWR (2070GM)
- PRESS SW-ELEC PUMP, B (2074GJ)
- DET-PHASE UNBALANCE, B ELEC PUMP (2707GJ) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 液压(43)
