- remove the FILTER-RECIRCULATION (4013HM) (Ref. AMM TASK 21-21-41-000-001).
(1) If the recirculation fan (14HG) operates correctly:
- do a check of the recirculation filter (4013HM) for contamination.
(a) If the filter is clogged:
- replace the FILTER-RECIRCULATION (4013HM) (Ref. AMM TASK 21-21-41-000-001) and (Ref. AMM TASK 21-21-41-400-001).
(b) If the filter is not clogged:
- install the FILTER-RECIRCULATION (4013HM) (Ref. AMM TASK 21-21-41-400-001).
(2) If the recirculation fan (14HG) does not operate:
- do a check of the P/BSW-VENTILATION/CAB FANS (4HG) and replace it if necessary (Ref. ASM 21-21/01).
(a) If the fault continues:
- do a check of the RELAY-FAN FAULT SUPPRESS (16HG) and replace it if necessary (Ref. ASM 21-21/01).
(b) If the fault continues:
- do a check of the RELAY-R FAN POWER (6HG) and replace it if necessary (Ref. ASM 21-21/01).
(c) If the fault continues:
- do a check of the RELAY-R FAN CONTROL (8HG) and replace it if necessary (Ref. ASM 21-21/01).
(d) If the fault continues:
- do a check of the RELAY-R FAN FAULT (9HG) and replace it if necessary (Ref. ASM 21-21/01).
(e) If the fault continues:
- replace the FAN-RECIRCULATION (14HG) (Ref. AMM TASK 21-21-51-000-001) and (Ref. AMM TASK 21-21-51-400-001).
(f) If the fault continues:
- do a check and repair the wiring (Ref. ASM 21-21/01) and (Ref. ASM 21-63/01) from:
- the FAN (14HG) to the CB (3HG),
- the FAN (14HG) to the CB (11HG),
- the FAN (14HG) to ground,
- the RELAY (8HG) to the RELAY (6HG),
- the RELAY (8HG) to ground,
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R - the RELAY (9HG) to the RELAY (6HG),
R - the RELAY (9HG) to ground,
R - the RELAY (9HG) to the ACSC2 (57HH),
R - the RELAY (16HG) to the SW (4HG) and,
R - the RELAY (16HG) to ground.
R **ON A/C ALL
B. Do the test as given in the Para. 3.A.
TASK 21-21-00-810-804
Cabin Recirculation Fault (SDAC 1 / SDAC 2)
1. Possible Causes
_______________
- SDAC-1 (1WV1)
- SDAC-2 (1WV2)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 21-21-00-710-001 Operational Test of the Cabin Recirculation Fans 14HG
and 15HG.
AMM 31-55-34-000-001 Removal of the SDAC (1WV1,1WV2)
AMM 31-55-34-400-001 Installation of the SDAC (1WV1,1WV2)
ASM 21-21/01
3. Fault Confirmation
__________________
A. Do the operational test of the cabin recirculation fans 14HG and 15HG (Ref. AMM TASK 21-21-00-710-001).
4. Fault Isolation
_______________
A. If the ECAM upper DU gives the warning COND L+R CAB FAN FAULT, but no maintenance message comes on:
(1) replace the SDAC-1 (1WV1) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
(2) If the fault continues:
- replace the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001) and (Ref. AMM TASK 31-55-34-400-001).
(3) If the fault continues:
- do a check and repair the wiring (Ref. ASM 21-21/01) between:
- the P/BSW-VENTILATION/CAB FANS (4HG)A pin B3 and SDAC-1 (1WV1)AA pin 10G and,
- P/BSW-VENTILATION/CAB FANS (4HG)A pin B3 and SDAC-2 (1WV2)AA pin 10G.
B. Do the test as given in the Para. 3.A.
「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 ∞∞21-21-00∞∞∞∞∞∞∞∞∞∞Page 214
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AIR DISTRIBUTION AND RECIRCULATION - TASK SUPPORTING DATA
_________________________________________________________
Air Distribution and Recirculation - Block Diagram
Figure 301
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Feb 01/98 CES
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