TASK 49-00-00-810-952
APU AUTO SHUT DOWN - NO ACCELERATION, IGV Actuator Fault (APS 3200)
1. Possible Causes
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- INLET GUIDE-VANE ACTUATOR (8014KM)
- wiring
- ECB (59KD)
- AUXILIARY POWER UNIT (4005KM)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 49-00-00-710-008 Operational Test of the APU (APS 3200)
AMM 49-11-11-000-003 Removal of the Power Plant (APU) (APS 3200)
AMM 49-11-11-400-003 Installation of the Power Plant (APU) (APS 3200)
AMM 49-23-51-000-003 Removal of the Inlet Guide Vane Actuator (8014KM)
(APS 3200) AMM 49-23-51-400-003 Installation of the Inlet Guide Vane Actuator (8014KM) (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).
4. Fault Isolation
_______________
A. If the APU Last Leg Report gives the maintenance message:
IGV ACTUATOR (8014KM)
Fault Code Number: 053
NOTE : The APU SHUTDOWNS report gives the maintenance message:
____
NO ACCELERATION - IGV ACTUATOR (8014KM)
APU Auto Shut Down Fault Code Number: 053
- do a visual check through the Air Inlet Plenum to make sure that the Inlet Guide Vanes (IGV) are in the closed position.
(1) If the IGV are not in the closed position:
- remove the quick disconnect pin from the actuator support and make sure that the IGVs are moving freely (Ref. AMM TASK 49-23-51-000-003).
(a) If the IGVs are moving freely:
- replace the INLET GUIDE-VANE ACTUATOR (8014KM) (Ref. AMM TASK 49-23-51-000-003) and (Ref. AMM TASK 49-23-51-400-003).
1_ If the fault continues:
- check and repair the wiring from the ECB (59KD) AB/E8, E9,
E11, E12, G8, G9 to the INLET GUIDE-VANE ACTUATOR (8014KM)
P21/1, 2, 3, 4, 5, 6 (Ref. ASM 49-61/02).
a 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).
(b) If the IGVs are not moving freely:
- replace the AUXILIARY POWER UNIT (4005KM) (Ref. AMM TASK 49-11-11-000-003) and (Ref. AMM TASK 49-11-11-400-003).
B. Do the test given in para. 3.
TASK 49-00-00-810-959
APU Generator electrical-parameter indication(s) replaced by amber XX (APS 3200)
1. Possible Causes
_______________
- GCU-APU (1XS)
- EGIU-2 (22XU2)
- connection between the EGIU-2 (22XU2) and the SDAC 1 and 2 (1WV1(2)) and/or the APU GCU (1XS)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-22-00-810-808 APU GEN Voltage, Frequency and Load Indication Lost
or Incorrect
AMM 24-22-33-000-001 Removal of the EGIU-1(2) (22XU1, 22XU2)
AMM 24-22-33-400-002 Installation of the EGIU-1(2) (22XU1, 22XU2)
AMM 24-23-34-000-001 Removal of the GCU-APU (1XS)
AMM 24-23-34-400-001 Installation of the GCU-APU (1XS)
AMM 49-00-00-710-008 Operational Test of the APU (APS 3200)
3. Fault Confirmation
__________________
A. Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-008). Do a check of the APU GEN electrical-parameter indications on the lower ECAM DU (APU Page).
4. Fault Isolation
_______________
A. Maintenance Action
(1) If all electrical parameter indications are replaced by amber XX:
- do the trouble shooting of the connection between the EGIU-2 (22XU2) and the SDAC 1 and 2 (1WV1(2)) and/or the APU GCU (1XS) (Ref. TASK 24-22-00-810-808). 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 机载辅助动力 1(126)
