R b_ If the APU fuel system is OK:
R - do a check for APU internal damage.
R - do a check for contamination of the MAGNETIC-DRAIN PLUG
R (Ref. AMM TASK 49-91-42-200-004) .
R NOTE : If the MAGNETIC-DRAIN PLUG is not contaminated,
____ R continue without starting the APU.
R - .
R - remove the end cap of the STARTER MOTOR (8KA).
R - use a socket and a ratchet on the shaft of the STARTER
R MOTOR (8KA) to turn the APU counterclockwise (in the
R direction of the arrow on the housing).
R - make sure that the APU rotates freely.
R c_ If the APU rotates freely:
R - replace the FUEL FILTER (Ref. AMM TASK 49-32-41-920-001).
R - If the fault continues:
R - . replace the FUEL CONTROL UNIT (P19) (Ref. AMM TASK 49-R 32-11-000-003) and (Ref. AMM TASK 49-32-11-400-003).
R - If the fault continues:
R - . replace the FLOW DIVIDER (P13) (Ref. AMM TASK 49-32-13-R 000-001) and (Ref. AMM TASK 49-32-13-400-001).
「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 : 107-107, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page A208
Config-1 Aug 01/05 CES
R - If the fault continues:
R - . do a check for damage of the IGV ACTUATOR linkage and
R the IGV assembly
R - If the IGV ACTUATOR linkage/IGV assembly are damaged
R and/or do not move freely:
R - . replace the APU (4005KM).
R - If the IGV ACTUATOR linkage/IGV assembly are OK:
R - . replace the APU INLET PRESSURE TRANSDUCER (P22) (Ref.
R AMM TASK 49-51-21-000-001) and (Ref. AMM TASK 49-51-21-R 400-001).
R - If the fault continues:
R - . replace the APU INLET TEMPERATURE SENSOR (P6) (Ref. AMM
R TASK 49-23-14-000-001) and (Ref. AMM TASK 49-23-14-400-R 001).
R - If the fault continues:
R - . replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-003)
R and (Ref. AMM TASK 49-61-34-400-003).
R - If the fault continues:
R - . replace the EGT 1 and/or 2 THERMOCOUPLE (Ref. AMM TASK
R 49-72-15-000-002) and (Ref. AMM TASK 49-72-15-400-003).
R d_ If the APU does not rotate freely:
R - replace the APU (4005KM) (Ref. AMM TASK 49-11-11-000-004)
R and (Ref. AMM TASK 49-11-11-400-004).
**ON A/C 159-199, 210-210,
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
NO ACCELERATION
FCU (8022KM) / APU FUEL SUPPLY / STARTER MOTOR 8KA
associated with Fault Code Number (FCN) 215
(1) do a check for a blockage of the APU inlet.
- If the fault continues:
- check the APU accumulated hours TSN/TSO (Ref. AMM TASK 31-36-00-740-015).
(a) If the accumulated hours TSN/TSO are greater than 2000 hours:
- make sure that the APU rotates freely.
1 If the APU rotates freely:
_
- get acces to the APU DMM report (Ref. AMM TASK 49-00-00-970-001)
- compare the value of CT5ATP (corrected EGT during MES) from the DMM page versus 663 deg.C (1225 deg.F).
a If EGTA exceeds 663 deg.C (1225 deg.F) then continue in
_
para. 2_ .
「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 : 107-107, 159-199, 210-210, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page A209
Config-1 Aug 01/05 CES b If EGTA does not exceed 663 deg.C (1225 deg.F) then
_ continue in para (b).
2 Get acces to the APU DMM report (Ref. AMM TASK 49-00-00-970-
_
001)
- compare the START_TIME (time of last APU start) from the DMM page versus 60 seconds.
a If START_TIME exceeds 60 seconds (slow start time) then
_ continue in para. 3_ .
b If START_TIME does not exceed 60 seconds then continue in
_
para (b).
3 Get acces to the APU SHUTDOWN report 14 (Ref. AMM TASK 31-36-
_
00-740-011):
- scan down and ensure that IGV position is within the normal range for APU start (10 - 22 degrees).
a If IGV position is not in the normal range:
_
- do a check for damage of the IGV actuator linkage and IGV assy (Ref. TASK 49-00-81-810-811).
b If IGV position is in the normal range:
_
- scan down to lines labled "8N" and "9N", or to lines where EGTA is highest.
- compare APU speed (NA) and EGTA versus LCIT on Fig. 201.
- . If EGTA exeeds value on Fig. 201
- .. high EGT is determined (HOT SECTION DISTRESS).
- .. replace the APU (4005KM) (Ref. AMM TASK 49-11-11-000-004) and (Ref. AMM TASK 49-11-11-400-004). 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 2(75)
