G. If:
.the bleed pressure is low with both engines in operation,
.the bleed pressure is also low in ECS mode,
.the APU self test gives no maintenance message.
- 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).
(3) If the fault continues:
- do a check of the aircraft bleed system for leaks.
H. If:
.the bleed pressure fluctuates during MES motoring test,
NOTE : The N2 speed of the engine must not more than 25%.
____
.the APU self test gives no maintenance message.
NOTE : Aircraft configuration:
____
- the PACK 1 and 2 pushbutton switches are OFF,
- the APU BLEED valve pushbutton switches is ON,
- both engines BLEED pushbutton switches are off,
- MES motoring test with one engine.
- replace the BLEED CONTROL VALVE (8051KM) (Ref. AMM TASK 49-51-53-000-001) and (Ref. AMM TASK 49-51-53-400-001).
J. If. . a low APU bleed pressure cannot be confirmed, . there is a pilot/maintenance report of a low APU pressure during Engine 1 start:
- replace RELAY (16HB)
(1) If the fault continues:
- replace VALVE-FLOW CTL (11HB) (Ref. AMM TASK 21-51-51-000-001) and (Ref. AMM TASK 21-51-51-400-001).
K. Do the test given in para. 3.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 106-106, 108-149, 211-299, 301-399, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A207
Config-2 Aug 01/05 CES
TASK 49-00-00-810-942
Bleed Control Valve Fault (APS 3200)
1. Possible Causes
_______________
- fuel leaks
- wiring
- BLEED CONTROL VALVE (8051KM)
- ECB (59KD)
- INLET PRESSURE/TEMPERATURE SENSOR (8013KM)
- FUEL CONTROL UNIT (8022KM)
- FUEL FLOW DIVIDER (8024KM)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 49-00-00-710-008 Operational Test of the APU (APS 3200) AMM 49-23-17-000-001 Removal of the Inlet Pressure/Temperature Sensor (8013KM) (APS 3200) AMM 49-23-17-400-001 Installation of the Inlet Pressure/Temperature Sensor
(8013KM) (APS 3200) AMM 49-32-11-000-002 Removal of the Fuel Control Unit (8022KM) (APS 3200) AMM 49-32-11-400-002 Installation of the Fuel Control Unit (8022KM) (APS
3200) AMM 49-32-12-000-002 Removal of the Flow Divider (8024KM) (APS 3200) AMM 49-32-12-400-002 Installation of the Flow Divider (8024KM) (APS 3200) AMM 49-51-53-000-001 Removal of the Bleed Control Valve (8051KM) (APS
3200) AMM 49-51-53-400-001 Installation of the Bleed Control Valve (8051KM) (APS 3200) AMM 49-61-34-000-002 Removal of the Electronic Control Box (ECB) (59KD) (APS 3200) AMM 49-61-34-400-002 Installation of the Electronic Control Box (ECB) (59KD) (APS 3200) ASM 49-61/02
3. Fault Confirmation
__________________
A. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-008).
NOTE : During the operational test of the APU, carefully examine the fuel
____ lines from the fuel control unit to the bleed control valve:
- fuel leaks are not permitted, correct/replace as necessary.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 106-106, 108-149, 211-299, 301-399, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A208
Config-2 Aug 01/05 CES
4. Fault Isolation
_______________
A. Maintenance Action
(1) If the APU Last Leg Report gives the maintenance message:
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