TM 10-4610-232-12
Table 3-1. Operator Troubleshooting Guide (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3.
Check pressure gages when starting.
A rapid drop on one of the gages indicates which filter may be plugging.
Step 4.
Troubleshoot raw water pump and booster pump.
Step 5.
Shutdown ROWPU to check media level.
Step 6.
Notify unit maintenance.
7. High pressure pump starts but lights go dim and remain dim.
Step 1.
Check pressure control valve.
Open valve.
Step 2.
Check generator voltage.
Adjust voltage to 440 volts and RPM to 60 cycles.
Step 3.
Notify unit maintenance.
8. High pressure pump overloads trip open repeatedly.
Step 1.
Notify unit maintenance.
9. HIGH PRESSURE PUMP circuit breaker opens whenever pump is started.
Step 1.
Notify unit maintenance.
10. High pressure pump starts but stops when HIGH PRESSURE PUMP START switch is released.
Step 1.
Notify unit maintenance.
11. High pressure pump/motor is noisy.
Step 1.
Refer to high pressure pump problem malfunction 19.
Step 2.
Check high pressure pump assembly stable levels.
Release air from pump assembly stable levels until noise disappears. If noise does not go away, slowly
inflate stable levels until noise goes away.
Step 3.
Notify unit maintenance.
12. High pressure alarm light stays on.
Step 1.
Notify unit maintenance.
13. HIGH PRESSURE PUMP PRESSURE HIGH alarm light comes on below 930 psig (6412 kPa) or is not on at 960 psig (6619 kPa).
Step 1.
Notify unit maintenance.
14. High pressure pump and/or piping leaks water.
Step 1.
Notify unit maintenance.
15. High pressure pump leaks oil or oil looks milky.
Step 1.
Notify unit maintenance.
16. High pressure pump has excess water flowing out of pump drain cavity.
NOTE
A small stream or drips are normal.
Step 1.
Notify unit maintenance.
17. High pressure pump discharge pressure is low (won’t go to 900 psig (6205 kPa)).
Step 1.
Check pressure control valve.
Adjust to correct pressure.
Step 2.
Check high pressure relief valve.
Notify unit maintenance if leaking.
Step 3.
Notify unit maintenance.
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