Pentair Pentek Series Electronic Manual page 95

SECTION 13: Troubleshooting
Motor Troubleshooting Flow Charts (continued)
Troubleshooting Flow Chart
Follow the arrow from the symptom on the left, to the inspection in the middle box.
If the middle box describes to symptom, proceed to the box on the right for the solution.
Motor runs
continuously
94
Pressure switch.
Are switch contacts "welded" in the
closed position, or set too high?
NO
Low well level.
Pump may exceed well capacity. Shut off
pump, and wait for well to recover. Check
static and drawdown levels from well head.
Does water level recover to original level?
NO
Leak in system.
Check system for leaks. Are leaks found?
NO
Worn pump.
Symptoms are similar to a leak in a down-
pipe, or low water level in the well. Reduce
pressure switch setting. If pump shuts off
worn parts may be at fault. Is sand found
in the tank?
NO
Loose or broken motor shaft.
Little or no water will be delivered if the
coupling between the motor and pump
shaft is loose. A jammed pumps may have
caused the motor shaft to shear off.
NO
Pump screen blocked.
Restricted flow may indicate a plugged
intake screen. Pump may be in mud / sand.
NO
Check valve stuck closed.
No water will flow past a check valve in the
closed position.
(Continued)
YES
Replace pressure switch
Throttle pump output or
YES
reset pump to lower level.
Do not lower into sand.
Replace damaged pipes
YES
or repair leaks.
Pull pump and replace
YES
or repair.
Pull pump, replace or
YES
repair damaged parts.
Clean screen and reset at
YES
less depth. May need to
clean the well.
YES
Replace check valve