DRAFT
TM 5-4210-249-13&P-2
0181
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WARNING
ICON 3, 2, 13
120 Volts AC is present during heat trace operation. Use extreme caution when
operating heat trace with trace junction and thermostat boxes open. Failure to
comply may result in electrical shock or injury to personnel.
Heat trace may become extremely hot during normal operations. Use caution when
checking operation of heat trace. Failure to comply may result in serious burns.
Step 7.
Install test lead set between purple and blue wires at thermostat switch terminals. Start
generator (WP 0021) and position circuit breakers 1, 3, and 15 to ON position. Check if
circuit breaker 15 trips.
If circuit breaker 15 trips, replace circuit breaker 15 (WP 0373).
Step 8.
Check if heat trace cable from junction box to # 1 splice connector is heating.
If heat trace cable between junction box and # 1 splice connector is not
heating, go to Step 17.
Step 9.
Check if roof/bumper turret heat trace cable is heating.
If roof/bumper heat trace cable is not heating, go to Step 17.
Step 10.
Check if heat trace cable between # 1 and # 2 splice connectors is heating.
If heat trace cable between # 1 and # 2 splice connectors is not heating, go
to Step 17.
Step 11.
Check if driver side tank to pump and tank fill heat trace cable is heating.
If tank to pump and tank fill heat trace cable is not heating, go to Step 17.
Step 12.
Check if heat trace cable between # 2 and # 3 splice connectors is heating.
If heat trace cable between # 2 and # 3 splice connectors is not heating, go
to Step 17.
Step 13.
Check if pump drain heat trace cable is heating.
If pump drain heat trace cable is not heating, go to Step 17.
Step 14.
Check if heat trace cable between # 3 and # 4 splice connectors is heating.
If heat trace cable between # 3 and # 4 splice connectors is not heating, go
to Step 17.
0181-5
