(2) Do a check to make sure that the pack 1 inlet-pressure indication on the ECAM BLEED page is > 20 PSI.
(3) Do a check to make sure that the pack 1 flow control-valve symbol on the ECAM BLEED page is shown in the open position.
(4) Do the operational test of the pack temperature-control system (Ref. AMM TASK 21-61-00-710-001).
**ON A/C ALL
4. Fault Isolation
_______________
A. If the pack 1 inlet-pressure indication on the ECAM BLEED page is < 20 PSI:
- increase the pressure to > 25 PSI.
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
B. If the pack 1 flow control-valve symbol on the ECAM BLEED page is shown in the closed position:
- do a check of the pressure sense line between the FCV (11HB) and the SENSOR (10HM9) for contamination and clean it if necessary (Ref. AMM TASK 21-51-11-000-001), (Ref. AMM TASK 21-51-11-400-001), (Ref. AMM TASK 21-61-18-000-001) and (Ref. AMM TASK 21-61-18-400-001).
(1) If the fault continues:
- replace the VALVE-FLOW CTL (11HB) (Ref. AMM TASK 21-51-51-000-001) and (Ref. AMM TASK 21-51-51-400-001).
(2) If the fault continues:
- replace the SENSOR-COMPRESSOR PNEUMATIC OVERHEAT (10HM9) (Ref. AMM TASK 21-61-18-000-001) and (Ref. AMM TASK 21-61-18-400-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞21-61-00∞∞∞∞∞∞∞∞∞∞Page 221
Aug 01/05 CES
R **ON A/C 401-499,
B. If the pack 1 flow control-valve symbol on the ECAM BLEED page is shown in the closed position:
- replace the FLOW CTL SYSTEM - PACK 1 (23HB) (Ref. AMM TASK 21-51-51-000-001) and (Ref. AMM TASK 21-51-51-400-001).
**ON A/C 001-003, 051-054,
C. If the test confirms the fault:
- do a check that the resistance of the compressor temperature sensor (12HH) measured between connector A/A and A/B is in these limits (Ref. ASM 21-61/04):
Temp (Deg.C) OHMS ---------------------------
+ 10 103.9 +/- 0.5
+ 20 107.8 +/- 0.5
+ 30 111.7 +/- 0.5
+ 50 119.4 +/- 0.5
+ 70 127.1 +/- 0.5
+ 100 138.5 +/- 0.5
(1) If the resistance values are out of the specified limits:
- replace the SENSOR-COMPRESSOR TEMPERATURE (12HH) (Ref. AMM TASK 21-61-11-000-001) and (Ref. AMM TASK 21-61-11-400-001).
(2) If the fault continues:
- do a check that the resistance of the compressor overheat sensor (15HH) measured between connector A/A and A/B is in these limits (Ref. ASM 21-61/04):
Temp (Deg.C) OHMS ---------------------------
+ 10 103.9 +/- 0.5
+ 20 107.8 +/- 0.5
+ 30 111.7 +/- 0.5
+ 50 119.4 +/- 0.5
+ 70 127.1 +/- 0.5
+ 100 138.5 +/- 0.5
(a) If the resistance values are out of the specified limits:
- replace the SENSOR-COMPRESSOR OVERHEAT (15HH) (Ref. AMM TASK 21-61-12-000-001) and (Ref. AMM TASK 21-61-12-400-001).
(3) If the fault continues:
(a) Swap the SDACIs (1WV1 and 1WV2).(Ref.AMM Task 31-55-34-401)
(b) If this action has solved the problem:
- replace the SDAC which formerly was SDAC#1.
「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, 051-054, 401-499, ∞∞21-61-00∞∞∞∞∞∞∞∞∞∞Page 222
Aug 01/05 CES
(4) If the fault continues:
(a) Open the CBIs for the Pack Controller 1+2.
(b) Disconnect the Pack ControllerIs. ( Ref.AMM Task 21-61-34-401)
(c) Diconnect the electrical connectors at the FCV#1 (11HB) and FCV#2 (8HB). (Ref.AMM Task 21-51-51-401)
(d) Disconnect the SDAC#1.
(e) Do a check for GND at the SDAC#1 connector AA pin 10D.
(f) Do a check for GND at the SDAC#1 connector AA pin 13B.
NOTE : There should be no GND contact
____
(g) If there is no GND contact, reconnect the SDAC#1.
(h) If there is GND contact do a check of the wiring and repair if nessesary.
R **ON A/C 004-049, 055-099, 101-149, 151-199, 201-299, 301-399,
C. If the test confirms the fault:
- do a check that the resistance of the compressor temperature sensor (12HH) measured between connector A/A and A/B is in these limits (Ref. ASM 21-61/04):
Temp (Deg.C) OHMS ---------------------------
+ 10 103.9 +/- 0.5
+ 20 107.8 +/- 0.5
+ 30 111.7 +/- 0.5
+ 50 119.4 +/- 0.5
+ 70 127.1 +/- 0.5 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 AIR CONDITIONING 空调2(21)
