Troubleshooting Guide

5 Jet Pump Troubleshooting Guide K2Pumps.com
K2 PUMPS CUSTOMER SERVICE, CALL 844.242.2475
Problem 5: The Pump does not build to shut-off pressure
Possible Causes Corrective Action
1. The pump is sucking air. 1. The suction pipe may have small leaks around the connections
where air can be pulled in. The suction pipe and all fittings must
be completely airtight.
2. The depth to water level in the well is too
low.
2. 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 your depth to water is
more than 25' deep.
3. There is debris blocking the pump's nozzle,
venturi, or impeller.
3. Inspect parts and clean as needed.
4. The voltage being fed to the motor does
not match the motor's rated voltage.
4. If the jet pump's motor is set to run on 230 volts but is only being
fed 115 volts, it will run at half speed and cannot build proper
pressure. Check the line voltage. Read the label on the pump
motor for instructions on selecting the correct voltage.
5. The impeller or diffuser shown signs of
wear.
5. Replace impeller, diffuser, along with necessary seals and
gaskets.
6. Incorrect nozzle or venturi in use. Deep Well System
6. Check the manual to determine which nozzle and venturi kit to
install for your pump model. Check the ejector package
instructions to determine which nozzle and venturi to install in the
package for your pump model.