(2) Get access to the APU SHUTDOWN report.
(3) Push the '>' adjacent to LRU DATA:
- the MCDU menu shows
FUEL PRESSURE SHOWS LOW DURING APU RUN
(4) Purge the APU fuel-line to make sure that there is no air in the fuel (Ref. AMM TASK 28-22-00-710-001) .
(5) Start the APU and apply Bleed Air for 20 seconds, minimum (Ref. AMM TASK 49-00-00-860-008).
4. Fault Isolation
_______________
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
NO ACCELERATION
LOW FUEL PRESSURE
associated with the Fault Code Number (FCN) 100
- do the trouble shooting of the APU fuel system - low pressure (Ref. TASK 28-22-00-810-801).
「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 : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page A227
201-210, Config-1 Aug 01/05 CES
B. Do the operational test of the APU (Ref. AMM TASK 49-00-00-860-008).
「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 : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page A228
201-210, Config-1 Aug 01/05 CES
TASK 49-00-81-810-840
APU AUTO SHUTDOWN - NO ACCELERATION, IGV Position disagrees with Command
(131-9(A))
1. Possible Causes
_______________
- IGV POSITION DISAGREES WITH COMMAND
- damage/leakage of the fuel supply and return lines
- damage of the IGV linkage
- damage/contamination of the electrical connector P21
- IGV ACTUATOR (P12)
- aircraft wiring
- ECB (59KD)
- APU (4005KM)
- IGV ACTUATOR (8014KM)
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific multimeter
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 49-00-00-860-008 APU Start by External Power (131-9(A))
AMM 49-11-11-000-004 Removal of the Power Plant (APU) (131-9(A))
AMM 49-11-11-400-004 Installation of the Power Plant (APU) (131-9(A))
AMM 49-23-51-000-004 Removal of the Inlet Guide Vane - Actuator (8014KM)
(131-9(A)) AMM 49-23-51-400-004 Installation of the Inlet Guide Vane - Actuator (8014KM) (131-9(A)) AMM 49-61-34-000-003 Removal of the Electronic Control Box (ECB) (131-9(A)) AMM 49-61-34-400-003 Installation of the Electronic Control Box (ECB) (131-9(A)) ASM 49-61/01
3. Fault Confirmation
__________________
A. Read-out of ECB Trouble-Shooting Data
(1) Put the APU MASTER SW to the ON position.
(2) Get access to the APU SHUTDOWN report.
(3) Push the '>' adjacent to LRU DATA:
- the MCDU menu shows
IGV POSITION DISAGREES WITH COMMAND
(4) Start the APU and apply Bleed Air for 20 seconds, minimum (Ref. AMM TASK 49-00-00-860-008).
4. Fault Isolation
_______________ R **ON A/C 001-049, 101-105, 107-107, 151-154, 201-207,
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
NO ACCELERATION
CHECK IGV ASSEMBLY/IGV ACTUATOR P21
associated with Fault Code Number (FCN) 83
- do a check for damage/leakage of the fuel supply and return lines of the IGV ACTUATOR.
(1) If there is damage/leakage in the fuel supply and return lines:
- do a repair
(2) If the fuel supply and return lines are OK:
- do a check for damage of the IGV linkage:
(a) If the IGV linkage is OK:
- do a check for damage/contamination of the electrical connector P21 of the ICV ACTUATOR (P21).
1 If the electrical connector P21 is damaged/contaminated:
_
- do a repair/cleaning. 2 If the electrical connector P21 is OK:
_
- use a multimeter to do the resistance a check across pin 4 and pin 10 of the IGV ACTUATOR (P21).
a If the resistance value is < 100 kOhms:
_
- replace the IGV ACTUATOR (P12) (Ref. AMM TASK 49-23-51-000-004) and (Ref. AMM TASK 49-23-51-400-004).
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 機載輔助動力 2(83)
