Franklin 2007 manual Motor Runs Continuously, Motor Runs But Overload Protector Trips

Maintenance – All Motors

System Troubleshooting

Motor Runs Continuously

POSSIBLE CAUSE

CHECKING PROCEDURES

CORRECTIVE ACTION

A. Pressure switch.	Check switch for welded contacts.	Clean contacts, replace switch, or adjust setting.
	Check switch adjustments.
	Pump may exceed well capacity. Shut off	Throttle pump output or reset pump to lower level.
B. Low water level in well.	pump, wait for well to recover. Check
		Do not lower if sand may clog pump.
	static and drawdown level from well head.
C. Leak in system.	Check system for leaks.	Replace damaged pipes or repair leaks.
	Symptoms of worn pump are similar to
D. Worn pump.	those of drop pipe leak or low water level	Pull pump and replace worn parts.
	in well. Reduce pressure switch setting, if
	pump shuts off worn parts may be the fault.
E. Loose coupling or broken motor shaft.	Check for loose coupling or damaged shaft.	Replace worn or damaged parts.
F. Pump screen blocked.	Check for clogged intake screen.	Clean screen and reset pump depth.
G. Check valve stuck closed.	Check operation of check valve.	Replace if defective.
H. Control box malfunction.	See pages 46-54 for single-phase.	Repair or replace.

Motor Runs But Overload Protector Trips

A. Incorrect voltage.	Using voltmeter, check the line terminals.	Contact power company if voltage is incorrect.
	Voltage must be within ± 10% of rated voltage.
	Direct sunlight or other heat source can raise control	Shade box, provide ventilation or move
B. Overheated protectors.	box temperature causing protectors to trip. The box
		box away from source.
	must not be hot to touch.
C. Defective control box.	For detailed procedures, see pages 46-54.	Repair or replace.
D. Defective motor or cable.	For detailed procedures, see pages 44 & 45.	Repair or replace.
E. Worn pump or motor.	Check running current, see tables 13, 22, 24 & 26.	Replace pump and/or motor.

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