EFF :  ALL  Page 101
 Aug 01/05
 CES 

 「一一一一一一一一一一一一一一一一一一一一一一一一T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T一一一一一一一一一一一一1 CFDS FAULT MESSAGES FAULT WARNINGS/MALFUNCTIONS 十一一一一一一一T一一一一一一一一一一一一一一一一一一一一一一一一T一一一一一一T一1 ISOLATION SOURCE MESSAGE ATA C PROCEDURE 十一一一一一一一一一一一一一一一一一一一一一一一一十一一一一一一一十一一一一一一一一一一一一一一一一一一一一一一一一十一一一一一一十一十一一一一一一一一一一一一1 R WHC 2 WHC2 2DG2 304234 3 304200 P 287 T 810 828 L一一一一一一一一一一一一一一一一一一一一一一一一1一一一一一一一1一一一一一一一一一一一一一一一一一一一一一一一一1一一一一一一1一1一一一一一一一一一一一一」

 WING ICE PROTECTION - FAULT ISOLATION PROCEDURES
________________________________________________
 TASK 30-11-00-810-801 Wing Anti-Ice Control-Valve Failed Open. WARNING : DO NOT TOUCH THE ANTI-ICE DUCTS UNTIL THEY ARE COOL. THE TEMPERATURE
_______
 OF THE DUCTS STAYS HIGH FOR SOME TIME AFTER THE ENGINE STOPS.

 1. Possible Causes
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 - VALVE-WING ANTI ICE CONTROL, L (9DL)
 - VALVE-WING ANTI ICE CONTROL, R (10DL) R - ZONE CONTROLLER (8HK)
 - aircraft wiring
 2. Job Set-up Information
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 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R  AMM 21-63-34-000-001 Removal of the Zone Controller (8HK)
R  AMM 21-63-34-400-001 Installation of the Zone Controller (8HK) AMM 30-11-00-710-001 Operational Test of the Wing Ice-Protection System AMM 30-11-51-000-001 Removal of the Wing Anti-Ice Control Valve AMM 30-11-51-400-001 Installation of the Wing Anti-Ice Control Valve ASM 30-11/01
 3. Fault Confirmation
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 A. Procedure
 (1) With no electrical power or bleed air supplied to the wing anti-ice system.
 (a) Examine the identified defective Valve-Wing Anti Ice Control L(R) 9DL(10DL).
 4. Fault Isolation
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 A. Procedure
 (1) If the locking lever on the WAI valve 9DL(10DL) shows that the valve is open:
R (a) Replace the applicable VALVE-WING ANTI ICE CONTROL, L (9DL) or R VALVE-WING ANTI ICE CONTROL, R (10DL), (Ref. AMM TASK 30-11-51-R 000-001) and (Ref. AMM TASK 30-11-51-400-001).
 「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 ∞∞30-11-00∞∞∞∞∞∞∞∞∞∞Page 201
 Aug 01/05 CESR (2) If the WAI valve 9DL(10DL) is closed in para. 3.A.(1).

 (a) Supply bleed air to the WAI system (Ref. AMM TASK 30-11-00-710-001), but do not set the P/BSW-Anti-Ice Wing (3DL) to on.

 (b) Examine the locking lever on the WAI valve 9DL(10DL).

 (c) If the locking lever position shows the valve is open.

 (d) Do a check for 28VDC at the WAI valve connector A pin A (Ref. ASM 30-11/01).

 (3) If there is no 28VDC: R (a) Replace the WAI valve 9DL(10DL) (Ref. para. 4.A.(1)(a).
 (4) If there is 28VDC:

 (a) Do a check of the aircraft wiring between the WAI valve 9DL(10DL) and the Relay Anti Ice Valve Control (5DL).

 (b) Repair the unservicable wiring/connectors.

 (c) Do the operational test of the WAI system (Ref. AMM TASK 30-11-00-710-001).

 (5) If no defects can be found in the WAI system:

 (a) Do a check of the aircraft wiring between the applicable wing anti-ice control-valve (9DL) or (10DL), connector A pin J and the SDAC ATA 31-54 (Ref. ASM 30-11/01).

 (b) Repair all the unserviceable wiring and connectors.

 (c) Do the operational test of the wing anti-ice system (Ref. AMM TASK 30-11-00-710-001).

R (6) If the fault indication is still shown:
R (a) Replace the ZONE CONTROLLER (8HK), (Ref. AMM TASK 21-63-34-000-R 001) and (Ref. AMM TASK 21-63-34-400-001).

R (b) Do the operational test of the wing anti-ice system (Ref. AMM TASK 30-11-00-710-001).
R (7) If the fault indication is still shown:
R (a) Do a check of the aircraft wiring between the VALVE-WING ANTI ICE
R CONTROL, L (9DL) or VALVE-WING ANTI ICE CONTROL, R (10DL) and
R ZONE CONTROLLER (8HK) (Ref. ASM 30-11/01).

R (b) Repair all the unserviceable wiring and connectors.
 「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 ∞∞30-11-00∞∞∞∞∞∞∞∞∞∞Page 202
　
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