| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-223-24-18-1
Troubleshooting - CONT
Table 2-2.
Malfunction
Test or Inspection
Corrective Action
CENTRIFUGAL PUMP UNIT (AUXILIARY SEAWATER COOLING)- UNIT
STEP 7. Check for partially closed discharge pressure gauge cutoff valve.
Ensure discharge pressure gauge cutoff valve fully open.
STEP 8. Check for partially clogged pressure line or defective pressure gauge.
Clean pressure line. Replace pressure gauge.
STEP 9. Check for partially clogged pump casing.
Remove drain plug/flush pump casing/replace drain plug.
STEP 10. Check for air leak(s) in suction piping.
Tighten loose connection(s) in suction piping.
STEP 11. Check pump/motor for wrong direction of rotation.
Wire motor per instructions given on motor nameplate/decal.
STEP 12. Check for defective pump.
Replace pump, para. 2-99.
62. Pump motor not running.
STEP 1. Check for open pump motor circuit breaker.
Reset circuit breaker for AUX MCHRY MCC.
Check for loose connection(s) or defective electrical wires/cable(s)
STEP 2.
between AUX MCHRY MCC and pump motor.
Tighten loose connection(s). Replace electrical wires/cable(s).
(TM 55-1905-223-24-1812).
STEP 3. Check for defective motor.
Replace motor, para. 2-99.
63. Noisy pump/motor operation.
STEP 1. Check for air or gas in liquid.
Identify source and correct problem.
STEP 2. Check for liquid vortexing (cavitation) in casing.
Release trapped air from pump casing.
STEP 3. Check for dry bearings.
Grease pump/motor bearing(s) (Lo 55-1905-223-12).
STEP 4. Check for loose or broken mounting bracket and bolts.
Tighten loose mounting bracket. Replace bracket/bolts.
2-127
|
||
|
||
