MAINTENANCE
Troubleshooting
9
Troubleshooting
Problem Probable Causes Corrective Action
Motor will not start
No power to pressure switch due to blown fuses,
open switches, or loose connections
Check all electrical connections for security.
Check breaker and fuses.
Pump pressure switch is not closed Close pump pressure switch.
Pump fails to deliver
water
Pump not completely primed Prime pump.
Suction lift is too great Relocate the pump closer to the water source.
Foot valve is either not submerged, buried in
mud, or plugged
Inspect foot valve, making sure it is submerged.
Clean or replace as needed.
Pump loses prime
Air leaks in suction line Inspect suction line. Repair or replace as needed.
Well draws down too far Move pump closer to water source.
Faulty foot valve Inspect foot valve. Clean or replace as needed.
Pump delivers water,
but not at rated capac-
ity
Leaks in suction or discharge line.
Inspect the suction and discharge lines. Clean or
replace as needed.
Foot valve, suction line, impeller, or nozzle are
partially plugged
Inspect parts. Clean as needed.
Suction lift is greater than recommended Relocate the pump closer to the water source.
Improper impeller rotation or low speed Ensure proper gauge wire has been used.
Venturi or diffuser is plugged. Clean as needed.
Motor is wired for improper voltage
Check to ensure voltage indicator on pump
matches voltage at power source.
Motor does not come off starting windings
(improper motor switch adjustment)
Pump starts and stops
too often
Faulty air volume control Replace air volume control.
Air leaks in tank above the water level Check fittings. Replace tank.
Incorrect setting on the pressure switch
Adjust setting on pressure switch. Refer to
“
Changing the Voltage” on page 5.
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