How to prevent your MASTRA submersible pump from freezing and avoid costly damage?

If you would like to stop using your MASTRA submersible pump for multiple months, it's always a good idea to drain it and move the pump to a warmer or temperature - controlled space.

* Tip: Before starting this project, make sure to shut off the MASTRA submersible pump supply lines and disconnect any power going to the pump system to prevent the submersible pump from running dry after it's been winterized, and from compressed air causing damage to parts of the water system by going where it shouldn't.

Step 1: Locate and Open the Drain Plug

Find the drain plug on your MASTRA submersible pump and open them to let all the water in the pump drain. Ensure that the most water as possible drains from the submersible pump. Next, drain the discharge and suction lines. Replace the drain plug before moving on to step 2. Remember that any water left from draining must also be removed to prevent damage to the pump system.

Step 2: Fill the Submersible Pump with Propylene Glycol

Apply food-grade propylene glycol and fill in pump body, to mix with any remaining water left inside the pump to prevent the system from freezing.

*Important: propylene glycol should never be confused with the automotive antifreeze used in car radiators, which is called ethylene glycol. It is extremely poisonous and can never be used in freshwater applications (especially not in well pumps).

Step 3: Use Compressed Air to Blow Out the Water Lines

Use an air compressor to blow out the discharge and suction lines in your irrigation, sprinkler, jet, pond, fountain, or any other submersible pump system. You'll also need an air hose with the proper air fitting connectors.

Next Step:

Even if you live in a warmer climate, all it takes is one good cold-snap to break your pump and cause catastrophic damage to your property. What's more, the damage from freezing is NOT a warrantied failure. Wherever you live, you'll be glad you took these steps to enjoy to coming seasons.

When the cold season ends and you're putting everything back together again, make sure you take the proper steps to de-winterize your MASTRA submersible pump by following the steps above in reverse. Then, all you'll need to do is re-prime your submersible pump if it's required.