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4 in. Submersible

Possible Cause

Corrective Action

FUSES BLOW

Incorrect voltage at motor

Check for correct wire size. Replace undersize wire. Check line voltage, contact power company if voltage is incorrect

Defective fuse box or incorrect fuses

Inspect fuse box wiring and correct. Install the proper fuses

Defective pressure switch

Replace pressure switch or clean contacts

Control box malfunction

See control box checking and repairing procedures. Replace defective components

Defective drop cable insulation

Check drop cable insulation resistance. Pump must be pulled to replace defective cable

Motor malfunction

Check motor winding resistance. Pump must be pulled to replace defective motor

Pump malfunction

If all above checks are good, then pump is probably bound. Pump must be pulled. Check for sand or pump shaft misalignment. Correct well condition if sand is the problem

MOTOR WON'T START, FUSES BLOW

No power to start motor

Check voltage at line side of fuse box. Contact power company if no power is reaching box. Check voltage at load side of fuse box and at other control devices in circuit. Make necessary corrections

Defective drop cable or motor

Check motor winding resistance. Pump must be pulled to replace defective cable or motor

MOTOR RUNS, BUT DELIVERS LITTLE OR NO WATER

Air locked pump

Normal delivery may resume if water pump is started and stopped at one minute intervals

Gas or air in well water

Connect hose to service valve. Run water thru hose submerged in water in clear jar. Observe for air bubbles from hose outlet. If tank is standard type, the air volume control may be defective - replace; otherwise, have well checked for proper water level as pump may be drawing air. Lower pump and/or correct well condition

Low water level in well or pumping too much from well

Throttle pump with gate valve. Lower pump setting if depth of well is adequate

Defective or improperly installed check valve

Pump must be raised to replace or reinstall correctly

Leak in drop pipe damaged section

Raise pump, check pipe for leak and replace

Pump inlet screen blocked

Raise pump and clean screen. Verify that well is clean. Reset pump at less depth if possible

Worn pump

Pull pump and replace damaged components

Broken pump shaft or motor shaft or worn coupling

Pull pump, inspect shafts and coupling for damage. Replace defective components

PUMP OPERATES PROPERLY, BUT WON'T SHUT OFF

Pressure switch

Readjust switch to lower shut off pressure setting, clean contacts or replace switch

Low water level

Throttle pump outlet at gate valve or readjust pressure switch to lower shutoff pressure setting

Leak in drop pipe or worn pump

Throttle pump output at gate valve or readjust pressure switch to lower shut off pressure setting. If pump does not shut off, pump must be raised and defect repaired

PUMP STARTS TOO OFTEN

Pressure switch

Readjust switch to wider operating pressure limits; replace defective switch

Air volume in tank incorrect

Check pressure in tank. Set at 2 lbs. below turn on pressure of the pressure switch. i.e. 30/50 pressure switch should have tank pressure of 28 lbs.

Check valve defect or leak in drop pipe

Throttle pump output at gate valve. If pump does not shut off, pump must be raised and defect repaired

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