1. Possible Causes
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- FIRE EMERGENCY STOP RELAY (6WF)
- ECB (59KD)
- wiring
2. Job Set-up Information
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A. Referenced Information
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REFERENCE DESIGNATION
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AMM 26-22-00-710-002 Operational Test of APU Auto-Fire-Exting. Circuit and the APU LP Fuel-Valve operation using each indiv. motor in turn and Test APU Emerg. Shutdown Circuit
AMM 49-61-34-000-001 Removal of the Electronic Control Box (ECB) (59KD) (GTCP 36-300) AMM 49-61-34-000-002 Removal of the Electronic Control Box (ECB) (59KD) (APS 3200) AMM 49-61-34-400-001 Installation of the Electronic Control Box (ECB) (59KD) (GTCP 36-300) AMM 49-61-34-400-002 Installation of the Electronic Control Box (ECB) (59KD) (APS 3200) AMM 49-62-00-710-001 Operational Test of Emergency Shutdown System (with APU SHUT OFF Switch 1KL) (GTCP 36-300) AMM 49-62-00-710-004 Operational Test of the Emergency Shutdown Circuit (using the APU Shut Off Switch 1KL) (APS 3200) ASM 49-61/01
3. Fault Confirmation
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**ON A/C 001-049, 051-099, 101-105, 151-199, 201-210,
A. Do the test of the APU emergency shutdown system with the APU/AUTO
EXTING/TEST pushbutton switch (Ref. AMM TASK 49-62-00-710-001).
R **ON A/C 106-149, 211-299, 301-399, 401-499,
A. Do the test of the APU emergency shutdown system with the APU/AUTO
EXTING/TEST pushbutton switch (Ref. AMM TASK 49-62-00-710-004).
4. Fault Isolation
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**ON A/C 001-049, 051-099, 101-105, 151-199, 201-210,
A. If the test gives the maintenance message:
FIRE EMERG STOP RLY 6WF
- replace the FIRE EMERGENCY STOP RELAY (6WF)
(1) 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).
(2) If the fault continues:
- do a check and repair the wiring from the FIRE EMERGENCY STOP RELAY (6WF) A/X1 to the ground. (Ref. ASM 49-61/01).
- do a check and repair the wiring from the ECB (59KD) AB/J14 to the FIRE EMERGENCY STOP RELAY (6WF) A/X2 (Ref. ASM 49-61/01).
R **ON A/C 106-149, 156-199, 210-299, 301-399, 401-499,
Post SB 49-1061 For A/C 156-199,210-210,
A. If the test gives the maintenance message:
FIRE EMERG STOP RLY 6WF
Fault Code: 133 or 134
- replace the FIRE EMERGENCY STOP RELAY (6WF)
(1) 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).
(2) If the fault continues:
- do a check and repair the wiring from the FIRE EMERGENCY STOP RELAY (6WF) A/X1 to the ground. (Ref. ASM 49-61/01).
- do a check and repair the wiring from the ECB (59KD) AB/J14 to the FIRE EMERGENCY STOP RELAY (6WF) A/X2 (Ref. ASM 49-61/01).
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-210,
B. The APU FIRE EXTINGUISHING PANEL 20VU (p/n 330TS08Y) has a fault. Special operation is necessary. Incorrect operation causes the APU fire extinguisher bottle to discharge. Airbus supplies a new 20VU panel that corrects this fault. See TFU 26.22.00.007 for more data.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞26-22-00∞∞∞∞∞∞∞∞∞∞Page 218
Aug 01/05 CES
(1) Maintenance recommendation:
(a) Before the test:
- Pull the CIRCUIT BREAKER 30WF on panel 120VU.
(b) During the test:
- Push the APU FIRE TEST BUTTON quickly and fully.
- Hold it fully during the test.
- Release it quickly.
(c) After the test:
- Close the CIRCUIT BREAKER 30WF on panel 120VU.
(2) Do the operational test of the FIRE EMERGENCY STOP RELAY (6WF) (Ref. AMM TASK 26-22-00-710-002).
NOTE : Make an entry in the applicable logbook that you must read the
____ APU CLASS 3 FAULTS after the first flight on the subsequent day.
R **ON A/C 106-149, 211-299, 301-399, 401-499,
B. The APU FIRE EXTINGUISHING PANEL 20VU (p/n 330TS08Y) has a fault. Special operation is necessary. Incorrect operation causes the APU fire extinguisher bottle to discharge. Airbus supplies a new 20VU panel that corrects this fault. See TFU 26.22.00.007 for more data.
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