TM 10-4610-241-24
TO 40W4-13-42
Table 3-1. Direct Support Troubleshooting-continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
BOOSTER PUMP ASSEMBLY - continued
2.
BOOSTER PUMP CIRCUIT BREAKER (CB6) AND/OR OVERLOAD HEATERS TRIP.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
WARNING
High voltages in this equipment can cause serious injury or death. When applying power
during a test, take proper measures to ensure safety of personnel. Never work on
electrical equipment unless there is another person nearby who is familiar with the
operation and hazards of the equipment.
Remove power at power source, reset circuit breaker, CB6/heater assembly and disconnect wires on CB6
output terminals (T1, T2 and T3).
Turn on power at power source and momentarily flip pump switch to START.
If circuit breaker CB6 trips, check for bare/disconnected wires in junction box and tighten loose
connections or replace wire. If trouble persists, replace CB6 (Paragraph 3-53).
Remove power at power source, reconnect wires to CB6; if tripped, reset heater assembly; and disconnect
wires (T1, T2 and T3) from heater assembly.
Turn on power at power source and momentarily flip pump switch to START.
If heaters trip, check for defective heaters. Replace as necessary (Paragraph 3-61) and reset heater
assembly. If trouble persists, replace motor starter (Paragraph 3-61).
Remove power at power source and disconnect booster cable assembly at both ends (Paragraph 3-34).
Check cable assembly for shorts (Paragraph 3-34).
a.
If shorted, replace cable assembly. Refer to Paragraph 3-34.
b.
If cable assembly is not shorted, repair centrifugal booster pump. Refer to Paragraph 3-37.
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