How to Winterize a Diaphragm Pump

If your company's chemical bulk storage tank has an air diaphragm pump, the easiest way to prepare it for winter is to take the pump apart and release all the water that may have accumulated during the priming or cleaning processes. If there's no water inside the pump, then the pump can't freeze. However, if you want to leave the pump together during the winter, use antifreeze to help the pump make it unscathed through the coldest months.

Antifreeze (propylene glycol)
Plastic tarp
Plastic baggies with twist ties
Grease
Rag
Exterior paint
Baking soda
Wire brush

Instructions

- 1
  Open the propylene glycol and add four gallons to the pump's basket strainer. Activate the pump's motor by turning the switch to the "On" or "Start" position, depending on manufacturer, to send the antifreeze throughout the pump.
- 2
  Drain the water tank by opening the discharge and suction valves and running the pump for one minute. Turn on the pump's engine and let it run until the fuel is all gone and the motor stops.
- 3
  Mix three parts baking soda to one part water, and use a wire brush with the baking soda paste to remove any signs of corrosion from the battery terminals.
- 4
  Cover the engine with a plastic tarp to protect it from the elements, and seal off all the locking caps with small plastic baggies. Place each bag over a locking cap, and use the twist ties that come with the bags to hold them in place.
- 5
  Cover exposed hydraulic cylinders with grease. Apply a thin layer of grease to a rag, and cover any cylinder surfaces exposed to the open air with the grease.
- 6
  Have a professional sandblast the pump and prepare it for painting.

What Do You Use in the Microwave in Place of Plastic Wrap?

How to Install a Frigidaire PLMV169DCD

Microwave Ovens