White S4A Installation And Operating Manual page 11

PUMP SERVICE CHART
THE TROUBLE IS?
Overload protector trips
No water delivered
Low water delivery
Pump doesn't shut off
Pump starts and stops too often (i.e. more than 5
per hour)
DAB Submersible Pump Installation Instructions 2013 rev 1
WHAT TO LOOK FOR
Faulty pressure switch
Control box in sun or near heat source
Wrong control box being used
Defective control box
Hydraulic overload
Water logged pressure tank
Low voltage supply to motor
Excessive motor starts
Broken pump shaft or coupling
Check valve installed backwards
Check valve stuck closed
Inlet screen clogged
Water level too low in well
Hole in delivery pipe below top of bore
Fittings stopping check valve opening fully
Pump rotation backwards
Water level too low in well
Discharge pipe clogged, corroded or ruptured
Pump installed too low in well and covered with
sand or other solids
Inlet screen partial clogged
Worn pump
Leak in outlet pipe below top of bore
Check valve stuck partially closed
Pipe ruptured
Defective or improperly adjusted pressure switch
Water level too deep for pump. Check selection
Pump is air or gas bound
Worn pump
Pipe obstruction
Pump needs adjusting
Incorrect pressure switch, see pressure system
installation
Defective air valve or tank diaphragm
Pressure switch differential adjustment failure
Pressure tank is too small
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