Winterizing Laundry Sink Sump Pump

 
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Old 10-09-2017, 08:48 PM   #1
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Winterizing Laundry Sink Sump Pump


Roughing in right now, new construction, summer vacation house in area with deep cold winter. Basement laundry will have washing machine discharge to utility sink adjacent, will raise discharge to main drain above using a 1/3 HP sump pump directly under sink drain.

We figure there is about 8/10 gallon of fluid left in total of drain line riser, the check valve, the "throttle" valve, the pump itself, and the sink drain atop the pump.

A gallon of RV antifreeze costs about $4.50 at Walmart.

Here's the plan and we invite your critique.

We'll switch the pump, rather than direct-wire it. We'll mark the switch, "leave on always except for winterizing."

To winterize, we'll pour two gallons of antifreeze into the tub, move our hand to the switch, and switch the pump OFF when most all the two gallons is pumped away, leaving a little antifreeze in the tub.

This should ensure the pump and all the inline PVC 1-1/4 DWV pipe, fittings, valves, the riser, etc. is all safe from freezing.

Anything else?
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Old 10-09-2017, 08:54 PM   #2
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Re: Winterizing Laundry Sink Sump Pump


what about the washing machine?

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Old 10-09-2017, 09:06 PM   #3
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Re: Winterizing Laundry Sink Sump Pump


SOP for the washer. Disconnect hoses, drain, run RV antifreeze in rinse cycle, etc., etc.
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Old 10-09-2017, 11:14 PM   #4
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Re: Winterizing Laundry Sink Sump Pump


You need to pump the RV antifreeze through the washing machine. Use a waterbed pump, connect it to the water inlet hoses, slowly hand cycle the timer or run it through a cycle if digital. Lay the discharge hose on the floor pour a gallon of RV anti freeze in the drum, it should run out the hose.

http://www.waterbedoutlet.com/Electr...erbed-pump.htm

Tom
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