(1) If all the circuit breakers are closed:
(a) Open the circuit breaker SDAC/1/SPLY (3WV). 1 If the ECAM warning C/B TRIPPED ON OVHD PNL goes out of view:
_ a Replace the SDAC-1 (1WV1) (Ref. AMM TASK 31-55-34-000-001)
_ and (Ref. AMM TASK 31-55-34-400-001).
b Close the circuit breaker SDAC/1/SPLY (3WV).
_ 2 If the ECAM warning C/B TRIPPED ON OVHD PNL stays in view, do
_ the actions given in Para. 4.B.(1)(b).
(b) Open the circuit breaker EIS/SDAC/2/SPLY (2WV). 1 If the ECAM warning C/B TRIPPED ON OVHD PNL goes out of view:
_ a Replace the SDAC-2 (1WV2) (Ref. AMM TASK 31-55-34-000-001)
_ and (Ref. AMM TASK 31-55-34-400-001).
b Close the circuit breaker EIS/SDAC/2/SPLY (2WV).
_ 2 If the ECAM warning C/B TRIPPED ON OVHD PNL stays in view:
_ a Do a check and repair the wiring (Ref. ASM 31-54/02):
_
- from SDAC1 (1WV1) connector AD/12A to the first terminal block.
- from SDAC2 (1WV2) connector AD/12A to the first terminal block.
b If the fault continues:
_
- do a check for a grounded circuit breaker.
- replace the grounded circuit breaker.
(2) If one circuit breaker or more are open: NOTE : On the ground, you must not close a tripped circuit breaker
____ without trouble shooting of the related system.
(a) Do an isolation check of the wiring between the circuit breaker and the related system (Ref. ASM 31-54/06):
1 If there is an isolation fault
_
- repair the wiring between the circuit breaker and the related system.
「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 ∞∞31-54-00∞∞∞∞∞∞∞∞∞∞Page A237
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(3) Close the tripped circuit breaker(s).
C. Test
(1) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
(2) Make sure that the ECAM warning is out of view.
(3) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
「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 ∞∞31-54-00∞∞∞∞∞∞∞∞∞∞Page A238
Aug 01/05R
CES TASK 31-54-00-810-926 Unwanted Tripping of a Circuit Breaker on the AC/DC Emergency Power Center
1. Possible Causes
_______________
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-60-00-860-001 EIS Start Procedure AMM 31-60-00-860-002 EIS Stop Procedure
3. Fault Confirmation
__________________
A. Do the EIS start procedure (upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
B. Test
Make sure that a warning is shown on the upper ECAM DU.
4. Fault Isolation
_______________
A. If the upper ECAM DU gives the warning message C/B TRIPPED L ELEC BAY:
- do a check of the status of the circuit breakers on the AC/DC emergency power center (106VU).
(1) If all the circuit breakers are closed:
- do a check for the grounded circuit breaker
- replace the grounded circuit breaker.
(2) If one circuit breaker or more are open: NOTE : On ground you must not close a tripped circuit breaker without
____
trouble shooting of the related system.
(a) Do an isolation check of the wiring between the C/B and the related system.
1 If there is an isolation fault
_
- repair the wiring between the C/B and the related system.
(3) Close the tripped circuit breaker(s).
「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 ∞∞31-54-00∞∞∞∞∞∞∞∞∞∞Page A239
Aug 01/05R
CES B. Do the EIS start procedure given in Para. 3.A.
(1) Make sure that the warning message is no longer shown.
(2) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
「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 ∞∞31-54-00∞∞∞∞∞∞∞∞∞∞Page A240
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