TM 10-3510-222-24
Table 2-7. UNIT CENTRIFUGAL PUMP TROUBLESHOOTING PROCEDURES - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
CENTRIFUGAL PUMP UNIT FAILS TO START (continued).
Step 4. On pump, check for continuity on wiring between connector-switch and AC motor.
a. Using a multimeter, check for continuity between the following wiring:
Burk
CH&E
Toggle Switch
Pump AC Motor
Pump AC Motor
(1)
T1
2, 8
1, 7
(2)
T2
1, 7
2, 8
(3)
T3
3, 9
3, 9
Gorman Rupp Pump AC Motor
(1)
T3 - T3
(2)
T2 - T2
(3)
T1- T1
b. If no continuity exists, repair wiring per FO-5 Centrifugal Pump Unit Wiring Diagram.
c.
If continuity exists, replace centrifugal pump unit. Refer to paragraph 2-74, Centrifugal Pump Unit.
Step 5. On water heater check for voltage, refer to TM 10-4520-259-13&P.
2.
CENTRIFUGAL PUMP UNIT FAILS TO DELIVER WATER .
Check sediment strainer.
a.
Turn connector switch off.
b.
Clean sediment strainer. Refer to paragraph 2-75, Sediment Strainer and Outlet Piping.
c.
Set ON/OFF switch to ON.
d.
If centrifugal pump unit fails to deliver water, replace centrifugal pump unit. Refer to paragraph 2-74,
Centrifugal Pump Unit.
2-30
