Intermittent Operation of the Yellow Electric Pump

TASK 29-24-00-810-805-A
Intermittent Operation of the Yellow Electric Pump

1. Possible Causes

CURRENT TRANSFORMER [3807GX]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 29-24-00-810-801-A	Loss or Fluctuation of the Pressure of the Yellow Electric Pump
AMM 29-24-00-710-001	Operational Test of the Yellow Auxiliary Power
AMM 29-24-15-000-001	Removal of the Yellow Electric Pump Current Transformer
AMM 29-24-15-400-001	Installation of the Yellow Electric Pump Current Transformer

3. Fault Confirmation
Subtask 29-24-00-710-058-A

A. Do the operational test of the Yellow electric pump AMM 29-24-00-710-001.

4. Fault Isolation
Subtask 29-24-00-810-054-A

A. If the Yellow electric pump starts to operate and stops after some seconds during the operational test:

Do a check of the red indicator light on the phase unbalance detector (3808GX).

(1) If the red indicator light on the phase unbalance detector (3808GX) is on:

Replace the CURRENT TRANSFORMER [3807GX] AMM 29-24-15-000-001 and AMM 29-24-15-400-001.

(2) If the red indicator light on the phase unbalance detector (3808GX) is not on, or the fault continues after replacement of the CURRENT TRANSFORMER [3807GX] :

Do the troubleshooting procedure (Ref. TSM TASK 29-24-00-810-801).

5. Close-up
Subtask 29-24-00-710-059-A

A. Do the test as given in Para. 3. A. to make sure that the operation is correct.

[Rev.8 from Aug 2018] 2026.04.04 04:29:30 UTC