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Irrigation pumps are the powerhouses behind water delivery systems ranging from lawn sprinklers to commercial greenhouse misters. This time of year, Pump Products stocks up on popular irrigation pump models by Berkeley, Sta-Rite and Little Giant to supply the demand for replacement pumps in systems that have been damaged by cold weather. Our product experts have compiled the following checklist to help you troubleshoot your pump as you prep your irrigation system for the dry summer months ahead:

• Turn off the circuit breaker or remove the fuse that feeds the pump before servicing or inspecting it.  High voltages running through the pump can cause injury or death.  

• Check the pump’s housing for cracks that can cause low water pressure. A cracked pump may require replacement.

• Clean out any debris or sediment that may have accumulated in the pump’s housing vents and could obstruct the impeller or other moving parts.

• Check the pump’s electrical connections and re-attach any loose wires to their connectors with a pair of pliers.

• Confirm that there are no cracks along the suction pipe extending from the pump allowing air into the system and slowing the flow of water.

• Follow your pump’s instructions for priming. In centrifugal pumps, air trapped within the housing can impede water flow.

• If you have run through the above checklist, and all parts seem to be sound, turn the pump’s electrical supply back on at the main panel and activate the sprinkler. The pump should operate normally with constant water flow.

WHAT TO DO WHEN YOUR PUMP WON’T RUN

• If you are controlling your pump with a pressure switch, check to make sure your system pressure has dropped to the switch’s “cut-in” pressure.

• Check the zone valve to make sure it is opening to conduct water.

• Inspect the unit for a popped fuse. Replace the fuse or reset the breaker if necessary.

• Confirm that the motor is rated for the voltage you have connected it to.

• Measure the voltage at the motor when it is trying to run.  If it is 5% lower than the base voltage, check for loose connections or inadequate wiring.

• Check to make sure adequate voltage is reaching the pressure switch. Repair as needed.

• Test the motor’s capacitor and starting mechanism. Replace as needed.

• If you have run through the above checklist, and all parts seem to be working, have the motor checked. It may have to be replaced.

For more information on our  irrigation pumps and repair parts, visit Pump Products at http://www.pumpproducts.com or call 1-800-429-0800.