10
Trouble Shooting Checklist
Solution
a. Make sure power is turned on. Check for blown fuses, loose or broken
wires, low voltage supply, malfunctioning pressure switch.
b. Replace. Check with dealer for warranty coverage.
Cause
a. Power supply failure
b. Burned out motor
Problem
1. Motor will not run
a. See No. 1 above.
b. Stop motor and re-prime pump. Repeat until all air is removed. A leaky foot
valve could prevent proper priming in deep well pumps.
c. Check by plugging pump discharge and screw Schrader valve into tapping
on right hand side of pump. Raise pressure to about 80 lbs. with tire pump.
If pressure falls off quickly, leak is present. Inspect all connections and pipe
sections. Check with soapsuds.
d. Check vertical distance to water level in well. Replace piping with longer
length if necessary.
a. Motor not running
b. Improper priming.
c. Air leak in suction line
d. Foot valve not submerged
2. No water supply
a. Check wiring diagram to make sure connections are properly matched to
voltage.
b. Check at pump with voltmeter. Make sure wiring is heavy enough for long
runs from power supply.
c. Take steps to increase air flow through pump location or air circulation
around motor.
d. See No. 6 below.
a. Improper wiring
b. Voltage too low
c. Inadequate ventilation
d. Pump cycling too often
3. Motor overload -
kicks out
a. Disassemble pump and check nozzle, tube and impeller.
b. Check water level in well to see actual pumping level. Measure vertical
distance to pump and compare to tolerance for pump type.
c. See No. 2c above.
d. Compare minimum pressure on which capacity is based with operating
pressure shown on gauge.
e. Replace suction and drive lines with larger diameter pipe.
f. Inspect for wear on impeller nose or internal blockage.
a. Nozzle or impeller clogged
b. Well lift too high
c. Leak in piping
d. Pressure control set too
high
e. Offset piping too small
f. Failure in impeller or diffuser
vanes
4. Water supplied is
below rated amount
a. Remove plug and clean out nozzle.
b. Check cut-in and cut-out pressures with accurate gauge. Switch may have
to be reset to lower pressure.
c. See No. 4b above.
d. Replace suction and drive lines with larger diameter pipe.
e. Inspect foot valve screen and clear if necessary.
a. Plugged ejector nozzle
b. Switch out of adjustment
c. Well lift too high
d. Offset piping too small
e. Foot valve partially plugged
5. Pressure too low to
shut off switch
a. Check for faulty AVC or low pressure in pre-charged tank (see Diagnosing
waterlogged tanks).
b. Check for leaky faucets and pipes drawing from tank. Also check for leaks
in foot valve bleeding water back to well.
a. Waterlogged pressure tank
b. Hidden water loss
6. Pump cycling too
often
a. Check AVC tubing for loose fittings.
b. See No. 2c above.
a. Air in pressure tank
b. Leak in suction line
7. Air delivered
through faucet at
low pressure
a. Clear blockages from foot valve, ejector or piping.
a. Suction line is plugged
8. Pump is noisy
