(2) Do the pre-conditioning through the HP ground connection (Ref. AMM TASK 12-33-21-618-001).
(3) Do a check that the pack 1 inlet-pressure indication on the ECAM BLEED page is > 20 PSI.
(4) Do a check of the pack 1 flow indicator, the compressor discharge and pack outlet temperature on the ECAM BLEED page.
(5) Do a check to see that there is airflow at the pack 1 ram-air outlet. **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.
「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 203
Aug 01/05 CES
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
B. For a Compressor Discharge Overheat Condition:
(1) If you select on the panel 30VU low airflow and the pack 1 flow indicator on the ECAM BLEED page moves to the HI indication:
- 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:
- 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
(a) 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).
(3) 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 OVHT (15HH) (Ref. AMM TASK 21-61-12-000-001) and (Ref. AMM TASK 21-61-12-400-001).
(4) If the fault continues:
- do a check that the pack 1 ram-air inlet-flap is in the open position.
「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, 051-099, 101-149, 151-199, ∞∞21-61-00∞∞∞∞∞∞∞∞∞∞Page 204
201-299, 301-399, Aug 01/05 CES
(5) If the pack 1 ram-air inlet-flap is closed:
- do a check for a ground signal at the pack controller 1 (7HH) connector AA/10A (Ref. ASM 21-61/03).
(a) If there is a ground signal:
- do a check of the RELAY-WHEEL 1 SPEED (25GG) and replace it if necessary (Ref. ASM 21-61/03).
(b) If the fault continues:
- do the test for the BSCU (10GG) as given in the AMM TASK 32-42-34-400-001 para. 5.A (Ref. AMM TASK 32-42-34-400-001).
(c) If the fault continues:
1 If the test gives a different maintenance message refer to the
_
fault symptom list.
- replace the CONTROLLER-PACK 1 TEMP (7HH) (Ref. AMM TASK 21-61-34-000-001) and (Ref. AMM TASK 21-61-34-400-001).
C. For a Pack Outlet Overheat Condition
(1) If there is no airflow at the pack 1 ram-air outlet:
- replace the MACHINE-AIR CYCLE (10HM1), (Ref. AMM TASK 21-52-21-000-001) and (Ref. AMM TASK 21-52-21-400-001).
(2) If the fault continues:
- do a check that the resistance of the pack outlet temperature sensor (13HH) 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-PACK OUTLET TEMP (13HH) (Ref. AMM TASK 21-61-15-000-001) and (Ref. AMM TASK 21-61-15-400-001).
(3) If the fault continues:
(a) Remove the inspection panel from the pack 1 ram-air inlet plenum (10HM14).
(b) Do a check of the water injector nozzle for damage or wear:
- if the water injector nozzle is worn or damaged replace it (Ref. AMM TASK 21-52-00-960-001).
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 AIR CONDITIONING 空調(diào)2(14)
