Troubleshooting Guide

3 Jet Pump Troubleshooting Guide K2Pumps.com
K2 PUMPS CUSTOMER SERVICE, CALL 844.242.2475
Problem 2: The Motor runs but no water is delivered
Disconnect Power. Unscrew priming plug to make sure there is water in the priming hole.
Possible Causes Corrective Action
1. The jet pump has not been primed, fully
primed or has lost prime.
1. Follow the pump priming directions in the owner's manual. You
may need to repeat the priming procedure several times. Install a
check valve and/or foot valve to help keep the pump primed.
Deep Well installation - Pressure regulator must be set properly.
Refer to the owner's manual for instructions on how to connect
and set the pressure regulator.
2. The suction line may have air leaks around
the joints or connection points.
2. Check all connections and fittings on the entire length of the
suction line. All connections and fittings must be air-tight.
3. The water level is below the suction pipe
inlet.
3. Lower the suction pipe until it is submerged in the water. Reprime
the pump. Install a foot valve at the end of the suction pipe.
4. The depth to water level in the well is too
low.
4. The depth to water is the distance from the pump to the water
source. Check the manual for the water level specifications of
your pump. Shallow well jet pumps only work up to 25' depth to
water. A deep well jet pump is needed if the depth to water is
more than 25' deep.
5. The ejector or impeller is clogged.
5. Clean the ejector or impeller.
6. The foot valve or inlet strainer is clogged.
6. Clean the foot valve or inlet strainer, or replace as needed.
7. The check valve or foot valve is stuck in
the closed position.
7. Replace the check valve or foot valve.
8. The pump motor is running on incorrect
voltage.
8. Make sure that the power source matches the pump motor
requirements. For dual-voltage motors, the motor should be set
at the same voltage to which it is connected. Read the label on
the pump motor for instructions on selecting the correct voltage.
9. The piping size is too small, too long, or
has too many elbows, causing too much
restriction in the suction pipe.
9. Always use a pipe that is the same size as or larger than the
suction port. Keep the length of the suction pipe as short as
possible and the number of elbows to a minimum. If you have a
long suction pipe, use larger piping.
10. The suction pipe is frozen.
10. Thaw the pipes out. Make sure the suction pipe is buried below
the frost line. Heat the pump house.
12. The suction pipe is buried in mud, sand,
dirt or debris.
12. Lift the suction pipe so that it does not touch the bottom of the
well or water source. Install a foot valve to help screen out mud,
sand, dirt or debris.
Deep Well installation - Pull jet assembly out and clean
13. Gaseous Well
13. Consult a licensed well contractor for solutions (e.g. installing a
well sleeve or a vented well cap.)
14. Inadequate pump size
14. Replace with a higher HP pump sized to your application
15. Voltage is too low.
15. Check with power company or contact an electrician. If wire size
is too small, install heavier wiring.
16. Air lock in suction lines.
16. The horizontal pipe between the well and pump should pitch
upwards toward the pump.