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
safety of personnel. Never work on electrical equipment unless there is
another person nearby who is familiar with the operation and hazards of
PUMP ASSEMBLY FAILS TO OPERATE.
Check if circuit breaker, CB6 and/or heater assembly of motor starter, K6, are tripped. If heater assembly
is tripped, resistance will be felt when reset plunger is pushed in.
If CB6 and/or heater assembly are tripped, go to step 4.
Check for 208 VAC, three phase power, on heater assembly of motor starter. Check between T1 - T2, T1 -
If 208 VAC is not measured in all three tests, notify Direct Support Maintenance.
Turn CB6 to OFF and disconnect pump cable assembly at pump motor (Paragraph 2-59) and cable wires at
motor starter, T1, T2 AND T3 Check cable for continuity.
If cable assembly is not defective (not open), replace centrifugal pump. Refer to Paragraph 2-59.
If cable assembly is defective, notify Direct Support Maintenance.
Shut down power source and disconnect cable at pump assembly motor. Check for shorts (red-black, red-
white, black-white) and from ground wire (green) to all other cable wires in turn.
If continuity is measured, indicating a short, in any test, notify Direct Support Maintenance.
If continuity is not measured in all tests, replace centrifugal pump. Refer to paragraph 2-59.