Sec IV- 6
Troubleshooting
CONDITION POSSIBLE CAUSE SUGGESTED CORRECTION
DISCHARGE VALVES
DIFFICULT TO OPERATE
Lack of lubrication
Recommended weekly
lubrication of discharge and
suction valve, use an
approved lubricant. Refer to
the valve manual for more
information.
Cavitation Troubleshooting
Water temperature too high. Reduce volume discharged by
lowering RPM or gating the
discharge valves.
Locate a source of cooler
water.
Pump is beginning to
cavitate
Discharging more water than
the pump is taking in.
Gate the discharge valves to
reduce flow and maintain
pressure.
Increase the flow into the pump
with more and/or larger intake
lines.
Air Leak
Locate and eliminate all air
leaks during maintenance.
Verify air bleeder on the
suction tube is not
open.
Drafting too high
Locate the pump closer to the
water source.
Verify lift loss, hose friction,
water temperature and other
lift limiting factors are reduced
or eliminated.
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