Winterization Tips

Correct irrigation pump winterization is necessary for keeping your pump protected from damage due to freezing – saving you valuable time and money. These easy steps will help walk you through the winterization process and leave you feeling confident that your pump will be protected all winter long.


STEP ONE – Turn off the lawn controller and source water valve – break the suction vacuum.


STEP TWO – If feasible, disconnect the water source and discharge piping.


STEP THREE – On the pump case, open both top and bottom drain valves to remove water from the pump chambers.


STEP FOUR – If blowing out your irrigation system with pressurized air, use a narrow box wrench to prevent the shaft from spinning. When the impeller spins too fast, the motor governor can be damaged.


STEP FIVE – Once the water is drained from pump case, close all drain valves.


STEP SIX – Fill the pump case just past the eye of the impeller with Munro Freeze Defeat pump winterization fluid. This will prevent damage due to freezing, protect the pump from corrosion, ensure longevity by minimizing rust on the inside of the pump, and keep the impeller free for spring start-up.


To make winterization even easier, our “Centrifugal Pump Maintenance: Winterization” video will help walk you through the process step-by-step.