Table 3-1. Direct Support Troubleshooting - continued
TEST OR INSPECTION
CHEMICAL FEED PUMP - continued
2. CHEMICAL FEED PUMP CIRCUIT BREAKER (CB7) AND/OR OVER LOAD HEATER TRIP.
High voltages in this equipment can cause serious injury or death.
When applying power during a test, take proper measures to
ensure personal safety. Never work on electrical equipment unless
there is another person nearby who is familiar with the operation
and hazards of the equipment and who is competent in
administering first aid.
Step 1. Remove power at power source, reset CB7, and disconnect wires on CB7 output
Step 2. Turn on power
If circuit breaker trips, check for bare/disconnected wires and tighten loose
connections or replace bare wire. If trouble persists replace CB7. Refer to paragraph
Step 3. Remove power at power source, reconnect wire and disconnect wires from heater at
T1 and T4
Step 4. Turn on power
If heater assembly trips, check for defective heater, replace as necessary (para 3-49)
and reset heater assembly
Step 5. Remove power at power source, reconnect wires to heater assembly and disconnect
wires from pump motor.
Step 6. Check pump power cable for continuity and shorts.
b If pump cable is not defective, repair chemical feed pump Refer to paragraph 3-34.