B. If: .there is no or low bleed pressure, .the APU self test gives no maintenance message, .the EGT does not rise and no increase in BLEED (PSI) pressure on the APU system page.
NOTE : Aircraft configuration:
____
- the PACK 1 and 2 pushbutton switches are off,
- the APU BLEED valve pushbutton switches is ON.
「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 : 106-106, 108-149, 211-299, 301-399, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A204
Config-2 Aug 01/05 CES
- check the bleed control valve position during the APU operation.
(1) If the bleed control valve is not open:
- replace the BLEED CONTROL VALVE (8051KM) (Ref. AMM TASK 49-51-53-000-001) and (Ref. AMM TASK 49-51-53-400-001).
C. If: .there is no or low bleed pressure, .the APU self test gives no maintenance message, .the EGT rises and the BLEED (PSI) pressure is low on the APU system page.
NOTE : Aircraft configuration:
____
- the PACK 1 and 2 pushbutton switches are off,
- the APU BLEED valve pushbutton switches is ON.
- do a check of the bleed control valve position and the movement of the IGVs, during the APU operation.
(1) If the bleed control valve is not fully open:
- replace the BLEED CONTROL VALVE (8051KM) (Ref. AMM TASK 49-51-53-000-001) and (Ref. AMM TASK 49-51-53-400-001).
(2) If the load control valve is fully open and the IGVs does not move:
- replace the IGV ACTUATOR (8014KM) (Ref. AMM TASK 49-23-51-000-003) and (Ref. AMM TASK 49-23-51-400-003).
(a) If the fault continues:
- replace the APU (4005KM) (Ref. AMM TASK 49-11-11-000-003) and (Ref. AMM TASK 49-11-11-400-003).
(b) If the fault continues:
- do a check of the aircraft bleed system for leaks.
D. If: .the bleed pressure is normal on one pack but is low with the other pack in operation. .the APU self test gives no maintenance message.
NOTE : Aircraft configuration:
____
- the PACK 1 or 2 pushbutton switch is on,
- the APU BLEED valve pushbutton switches is ON.
- isolate left or right,
- do the trouble shooting procedure of low air pressure in the right crossbleed duct (Ref. TASK 36-12-00-810-804).
(1) If the fault continues:
- do a check of the isolated pack for leaks.
「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 : 106-106, 108-149, 211-299, 301-399, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A205
Config-2 Aug 01/05 CES
E. If:
.the bleed pressure is low with both packs in operation,
.the APU self test gives no maintenance message.
NOTE : Aircraft configuration:
____
- the PACK 1 and 2 pushbutton switches are on,
- the APU BLEED valve pushbutton switches is ON.
- replace the BLEED CONTROL VALVE (8051KM) (Ref. AMM TASK 49-51-53-000-001) and (Ref. AMM TASK 49-51-53-400-001).
(1) If the fault continues:
- replace the INLET TEMP/INLET PRESSURE SENSOR (8013KM) (Ref. AMM TASK 49-23-17-000-001) and (Ref. AMM TASK 49-23-17-400-001).
- replace the LOAD COMPRESSOR DISCHARGE PRESSURE SENSOR (8039KM) (Ref. AMM TASK 49-51-19-000-002) and (Ref. AMM TASK 49-51-19-400-002).
(2) If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-002) and (Ref. AMM TASK 49-61-34-400-002).
F. If:
.the bleed pressure is low with one engine in operation,
.the APU self test gives no maintenance message.
NOTE : On the APU page of the lower ECAM display unit, the BLEED (PSI)
____
value is within 8 psig.
NOTE : Aircraft configuration:
____
- the PACK 1 and 2 pushbutton switches are OFF,
- the APU BLEED valve pushbutton switches is ON,
- do one MES at a time.
- isolate the left or right engine.
(1) For the related engine:
- do the trouble shooting of the engine STARTER SHUTOFF VALVE (SAV). Refer to the related trouble shooting in the applicable P. Block
101.
(2) If the fault continues:
- do the operational test of the BMCs (Ref. AMM TASK 36-11-00-740-001).
(a) If the test gives a maintenance message:
- do the related trouble shooting procedure.
(b) If the test is OK:
- check the aircraft bleed system for leaks.
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本文链接地址：A320 Trouble Shooting Manual 排故手册 机载辅助动力 1(119)
