TM 10-4610-241-24
TO 40W4-13-42
Table 3-1. Direct Support Troubleshooting-continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
DISTRIBUTION PUMP ASSEMBLY- continued
2.
DISTRIBUTION PUMP CIRCUIT BREAKER (CBS) 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 (CBS) and/or heater assembly and disconnect wires
on CB5 output terminals (T1, T2 and T3).
Turn on power at power source and momentarily flip pump switch to START.
If circuit breaker CB5 trips, check for bare/disconnected wires injunction box. Tighten loose connections
or replace defective wire. If trouble persists, replace CB5. Refer to Paragraph 3-53.
Remove power at power source, reconnect wires to CB5 and disconnect distribution pump cable at junction
box.
Turn on power at power source and momentarily flip pump switch to START.
If heater assembly trips, check for detective heaters, replace as necessary (Paragraph 3-61) and reset heater
assembly.
Remove power at power source and disconnect cable assembly from distribution pump motor (Paragraph
3-15).
Check pump cable assembly for shorts.
a.
If a short is indicated, replace cable assembly. Refer to Paragraph 3-15.
b.
If cable assembly is not shorted, repair pump assembly. Refer to Paragraph 3-16.
3-30
