Table 2-2. Unit Troubleshooting - continued
TEST OR INSPECTION
BOOSTER PUMP ASSEMBLY
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.
PUMP FAILS TO OPERATE.
Check if CB6 and/or K6 heater assembly injunction box are tripped.
If either CB7 or K6 heater assembly is tripped, go to step 3
Check for 208 VAC power on K6 heater assembly output terminals. Check between T1 - T2, T1 - T3
and T2 - T3.
If 208 VAC is not measured in all three tests, notify Direct Support Maintenance.
Remove power at power source and disconnect pump power cable assembly at booster pump and
heater output terminals, T1, T2, and T3 injunction box. Check cable assembly for continuity and
If cable assembly is defective notify Direct Support Maintenance.
PUMP IS NOISY
Check if booster pump is securely mounted to ROWPU frame.
If booster pump is not secure, secure booster pump.