Forum Title: Antifreeze and Compressor questions
I'm getting ready to close my inground pool. This is the first year I'll be doing it on my own. I've read the article in Pool School about this and have a few questions. 1. How do I get the antifreeze into the lines? When I watched the professionals do this last year, they blew air into the lines, closing each line with a rubber plug as they shifted the air flow from one line to the other. So by the end of the blowing process, the skimmer and the return both had rubber plugs, and then another plug was placed in the pump basket area, thus sealing air in all the lines. They never added antifreeze, so I'm not sure how to add it following their steps. 2. Last year I watched the people who closed our pool connect the compressor to the front of the pump (it looked like they unscrewed something and attached the compressor hose straight to the pump and blew all the air through that). Is there a special fitting I will need to hook up a compressor to this hole on the pump?
Category: pool Post By: NICOLE GOMEZ (Deltona, FL), 02/12/2019

They guys with the compressor were amateurs. Don't follow that example. Compressors provide a small volume of air at high pressure. You need a much high volume at a lower pressure. A decent shop vac is usually sufficient when you use the exhaust side of it. Lines that are blown and plugged are empty except for air. I don't use antifreeze, biodegradable or not. There is almost never a need if done properly. Drain the pump by pulling the pump plugs. Pull the drain plug for the filter. Put the drain plugs back in. Put the filter on Rinse. Put the shop vac hose in the pump and blow towards the filter. This will cause the filter tank to drain. Wait till you see air spitting out the drain and then some. Remove the hose. Put the lid back on the pump. Put the vac hose on the backwash port and set the multiport to a neutral position and blow the lines. Seal them in the order the blow in in or as you look at them, whichever is blowing the strongest. When completed, remove the pump lid and listen for any air leaks, If the bottom drain valve leaks, put either a #8 or #10 plug in, depending on whether you have 1.5 or 2 plumbing. Scott

- KRISTEN BARNETT (Costa Mesa, CA), 03/21/2019

There are many ways to blow pool lines. There are compressor users and there are shop vac guys. Amatuer or professional, it really doeant matter. I know guys who have been in the business 30+ years who use a compressor. As long as you have ~10 psi on the gauge, your fine. Here's what I do (and many others) and it works fine. Drain the water from the pump by removing the 2 plugs at the bottom. Replace one. Screw in a 1/4 nipple with an airhose quick connect to one of the drain ports as shown below. Set the mulitport on recirculate. Start the compressor and set the regualtor to about 10 psi. The reurn closest to the pump will blow first. Let it bubble for 30 seconds and cap it off. Then cap each return/suction line in succession as they blow. Once everthing is capped off, put the multiport on waste and the filter will get blown out. If you have a heater, open the drain plug on the heater, put the mutiport back on recirculate and let the heater blow until you see no more than a fine mist. Then blow a little longer. Once thats complete, put the plug back in the heater. Then, remove all the drain plugs from the pump, filter, remove the pressure gauge and the site glass, and move the muliport to winter. Now you put on the cover and your done. I never have used antifreeze. some people insiston it, but like Scott said, the pipes are mostly full of air anyway. If there is a little water left, it will seek the lowest level anyway which will be below the frost line in most cases. FWIW, the first year i had the pool, I had a pool company close the pool. They used a mighty vac with a pump lid cover attached to a vacuum port. That worked the same as the compressor i use now. I have my backwash line buried to run the waste out to a catch basin near my house, so i really dont want to remove the hose. It's easy for me to use the compressor and it gets the job done.

- MITCHELL VAZQUEZ (Tacoma, WA), 04/06/2019

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