- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
C. If no fault was found in APU compartment:
- do a check and make sure that the FIRE EMERG-STOP relay (5WF) is serviceable,
- do a check and make sure that the APU SHUT OFF pushbutton switch (1KL) is serviceable (Ref. AMM TASK 49-62-00-710-001).
- do a check and make sure the APU FIRE/WARN module (1WD) is serviceable (Ref. AMM TASK 26-13-00-710-001).
(1) If the FIRE EMERG STOP relay (5WF) is not serviceable:
- replace the FIRE EMERG-STOP RELAY (5WF).
(2) If the APU SHUT OFF pushbutton switch (1KL) is not serviceable:
- replace the APU SHUT OFF PUSHBUTTON-SWITCH (1KL).
(3) If the APU FIRE/WARN module (1WD) is not serviceable:
- replace the APU FIRE/WARN MODULE (1WD).
(4) If the FIRE EMERG STOP relay (5WF), the APU SHUT OFF pushbutton switch (1KL) and the APU FIRE/WARN module (1WD) are serviceable:
- do a check and repair the wiring:
- from the FIRE EMERG STOP relay (5WF) A/D1 to the ECB (59KD) AB/B4.
- from the APU FIRE/WARN module (1WD) F/S to the ECB (59KD) AB/B4.
- from the APU SHUT OFF pushbutton switch (1KL) 1 to the ECB (59KD) AB/B4.
(a) If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
D. If the APU BITE Test gives the maintenance message:
ECB 59KD:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
E. If you do not find the signs of a fire and the tests give a different maintenance message, you can find the related trouble shooting procedure in the applicable Page Block 101.
F. 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 : 001-003, 051-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A277
Config-1 Aug 01/05 CES **ON A/C 001-003, 051-062,
TASK 49-00-00-810-849
APU AUTO SHUTDOWN - NO ACCELERATION, APU speed decreases with
pneumatic/electrical load (GTCP 36-300)
1. Possible Causes
_______________
- COMPRESSOR INLET-PRESSURE TRANSDUCER P22
- plugged Fuel Filter
- FUEL CONTROL UNIT P19
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 31-36-00-740-008 Access to the Parameter Call-Up Menus
AMM 49-00-00-710-004 Operational Test of the APU (4005KM) (GTCP 36-300)
AMM 49-00-00-860-003 APU Start by External Power (GTCP 36-300)
AMM 49-32-11-000-001 Removal of the Fuel Control Unit (FCU) (8022KM) (GTCP
36-300) AMM 49-32-11-400-001 Installation of the Fuel Control Unit (FCU) (8022KM)
(GTCP 36-300) AMM 49-32-11-610-001 Servicing of the Fuel Filter (GTCP 36-300) AMM 49-51-18-000-001 Removal of the Compressor Inlet-Pressure Sensor (GTCP
36-300) AMM 49-51-18-400-001 Installation of the Compressor Inlet-Pressure Sensor (GTCP 36-300)
3. Fault Confirmation
__________________
A. Check/Test
(1) Start the APU (Ref. AMM TASK 49-00-00-860-003)
(2) Operate the APU in the Ready-to-Load condition (the blue AVAIL legend in the APU START pushbutton is on).
(3) Read-out the parameter value of the ALPHA-CALL UP label P2A (P2 value) of the APU (Ref. AMM TASK 31-36-00-740-008).
(4) Record the local, prevailing barometric pressure.
(5) Release the APU GEN pushbutton-switch to switch on the APU generator.
「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 : 001-003, 051-062, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A278
Config-1 Aug 01/05 CES 4. Fault Isolation
_______________
A. If an APU auto shutdown occurs when the APU generator is switched on and the SHUTDOWNS report gives the maintenance message:
NO ACCELERATION - (no associated message)
- compare the ALPHA-CALL UP parameter value of the P2A label with the local barometric pressure.
(1) If there is a noticable difference between both pressure values:
- replace the COMPRESSOR INLET-PRESSURE TRANSDUCER P22 (Ref. AMM TASK 49-51-18-000-001) and (Ref. AMM TASK 49-51-18-400-001). 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(65)
