Pentair MYERS HJ Série Notice D'utilisation page 15

Troubleshooting
Problem
Deep Well
Pump will not prime.
Pump delivers water for
a period of time, then
stops pumping.
Pump delivers water
but will not kick off
pressure switch.
Pump does not deliver
rated capacity.
Motor overheats and
shuts off (overload.)
Motor fails or does not
operate properly.
Checking Procedure
Stop motor, remove pressure regulator and fill case with water.
If pump is offset, check horizontal piping for dips or high spots. Pipe must have a gradual
slope from pump downward to well.
Check well water level to be sure ejector is in water.
Check piping and pump for air leaks.
Take pump apart to confirm diffuser o-ring seal is properly positioned.
Be sure motor is running in correct rotation: Clockwise when viewed from motor end
opposite shaft.
Pull well piping and check ejector for plugged nozzle or venturi.
Make sure foot valve is not sitting in sand or mud.
Make sure well water is not drawing below the foot valve. Use a water level tester while
the pump is operating.
Make sure the regulator is set properly, especially as well draws down. Regulator must be
set to provide minimum operating pressure at the maximum drawdown.
Pull well piping and check ejector for plugged nozzle or venturi.
Well may be drawing down below limit of ejector. Check with water level tester while
pump is operating.
Make sure tube from pressure switch to pressure regulator is not plugged.
Check pressure switch for defects.
Check for wear at impeller neck.
Make sure diffuser o-ring seal is properly positioned.
Check well lift. Use water-level tester while pump is running.
Check submergence depth of ejector. If the ejector is installed more than 10 feet below the
pumping level, capacity will be reduced due to increased friction in piping.
Operating pressure may be too high. Set the regulator to the minimum operating pressure
for your pump size.
Pull well piping and check the ejector for proper size and depth setting.
Make sure motor is properly wired for the supplied voltage.
Make sure wire is properly sized.
Make sure the impeller is not rubbing against the pump case.
If within warranty, return pump/motor to place of purchase (with proof of purchase) for
repair or exchange, if necessary.
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