3. Fault Confirmation
__________________
A. Test
NOTE : You can also do this trouble shooting with AIDS support (Ref. TASK
____
49-00-00-810-847).
NOTE : Examine and record all indications shown on the APU system page
____ (lower ECAM display unit) under the different mode conditions (specially the EGT and the BLEED pressure), during the test.
(1) Do the self test of the ECB (Ref. AMM TASK 49-00-00-710-001).
NOTE : If the self test gives a maintenance message, do the related
____ trouble shooting procedure first before you continue with this test.
(2) On overhead panel 35VU, make sure that the APU GEN p/bsw is released (APU GEN off).
(3) Start and operate the APU (Ref. AMM TASK 49-00-00-860-003):
NOTE : On the AIR COND section on the overhead panel 30VU, make sure
____
that
- the ENG 1 BLEED and the ENG 2 BLEED p/bsw are in the OFF position.
- the PACK 1 and PACK 2 p/bsw are in off position.
- record the EGT on the APU page (lower ECAM display unit).
(4) On the AIR COND section on the overhead panel 30VU, push the APU BLEED p/bsw to ON.
- record the EGT and the BLEED pressure on the APU page (lower ECAM display unit).
(5) On the AIR COND section on the overhead panel 30VU, push the PACK 1 p/bsw to on (the OFF legend is off).
- record the BLEED pressure on the APU page (lower ECAM display unit).
(6) On the AIR COND section on the overhead panel 30VU, push the PACK 1 p/bsw to OFF (the OFF legend is off).
- record the BLEED pressure on the APU page (lower ECAM display unit).
(7) On the AIR COND section on the overhead panel 30VU, push the PACK 2 p/bsw to on (the OFF legend is off).
- record the BLEED pressure on the APU page (lower ECAM display unit).
「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 A246
Config-1 Aug 01/05 CES
(8) On the AIR COND section on the overhead panel 30VU, push also the PACK 1 p/bsw to on (the PACK 1 and PACK 2 OFF legends are off).
- record the BLEED pressure on the APU page (lower ECAM display unit).
(9) On the AIR COND section on the overhead panel 30VU, push the PACK 1 and the PACK 2 p/bsw to OFF (the OFF legends are on).
- record the BLEED pressure on the APU page (lower ECAM display unit).
(10) Do the dry motoring of the engine 1 (Ref. AMM TASK 71-00-00-710-001),
- record the BLEED pressure on the APU page (lower ECAM display unit).
- Engine 2 should be running (Ref. AMM TASK 71-00-00-710-043) in MIN IDLE.
(11) Do the dry motoring of the engine 2 (Ref. AMM TASK 71-00-00-710-001).
- record the BLEED pressure on the APU page (lower ECAM display unit).
- Engine 1 should be running (Ref. AMM TASK 71-00-00-710-043) in MIN IDLE.
(12) Do the APU shutdown (Ref. AMM TASK 49-00-00-860-004).
4. Fault Isolation
_______________
**ON A/C 001-003, 051-062,
A. If the self test gives the maintenance message:
- CHECK PRESS XDCR WIRING OR ECB 59KD (Ref. TASK 49-00-00-810-831),
- DIFFERENTIAL PRESS XDCR P24 (Ref. TASK 49-00-00-810-827),
- TOTAL PRESS XDCR P23 (Ref. TASK 49-00-00-810-828),
- SURGE CTL VALVE P18 (Ref. TASK 49-00-00-810-830),
- INLET GUIDE VANE ACTR P21 (Ref. TASK 49-00-00-810-824),
- LOAD CTL VALVE P12 (Ref. TASK 49-00-00-810-829).
- Bleed-Flow-Sensor-Assembly (Ref. AMM TASK 49-51-14-000-001) and (Ref. AMM TASK 49-51-14-400-001)
R **ON A/C 063-099, 401-499,
A. If the self test gives the maintenance message:
- CHECK PRESS XDCR WIRING (8001KM)/ ECB 59KD (Ref. TASK 49-00-00-810-831),
- DIFFERENTIAL PRESS XDCR (8043KM) (Ref. TASK 49-00-00-810-827), 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(52)
