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Thread: Question on removing water and pushing air through system

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    Catanzaro's Avatar
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    Question on removing water and pushing air through system

    I know this is a little early in NJ, but I try to be prepared. I have a Hayward Super Pump and understand my plumbing. The water is being pulled from the main drains and skimmer and pushed up to the Multi-Port, through the sand filter and down to the returns.


    Q: When blowing out the lines, etc., do you change the multiport to the recirculate position so air will travel and bypass the sand filter? Or should it be placed on another setting?

    Q: Should you close the returns first while skimmer and main drains are closed? Or should you push air and close one at a time with the path of least resistance?

    With all the reading and video's that I have watched, this is something I have not been able to put my fingers on. Thank you.
    14,700 gallons IG Pool Vinyl Liner - Octal Circulation System
    Hayward Pro-Series 350 LB. Sand Filter Model # S270T - 2" Plumping
    Hayward CL2002 Chlorinator - Hayward Super Pump 2 HP Model # k48m2n111
    Hayward AQR9 SWG 25K Salt Cell & TF-100 Test Kit + Speed Stir
    Gulfstream HE125RA - 117K BTU Heat Pump - Date of Build is 11-2013

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    Pool Tool's Avatar
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    Re: Question on removing water and pushing air through system

    How/where are you hooking up your compressed air to blow the lines out? I am guessing this is to winterize?
    16' x 32' (21100 gal), vinyl, 1.5 hp Hayward SuperPump,
    Tagelus TA60/60D Sand Filter, Raypak 399K Digital Heater, TF-100

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    Catanzaro's Avatar
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    Re: Question on removing water and pushing air through system

    Yes, sorry. This is to winterize.

    With regards to the compressed air, possibly through the filter basket. There is a fitting there. Or inside the housing. Not sure yet. I have seen a special adapter on the housing cover when they closed the pool last year. I am going to attempt closing my own pool in September on my own. I have a very powerful Rigid wet vac that will blow air that may work. Or I can go out and purchase a 2hp air compressor. Additionally, I have a Craftsman large air compressor that I use to blow out the sprinkler lines (that works real well). There is an adjustment for pressure. Just need to be careful that I do not push too much pressure through the lines.

    The cost of closing the pool here in NJ is high. The cost of the compressor will be around the same. Here is a link to my pump:

    http://www.poolsupplies.com/product/...n-ground-pools

    Unless there is another method of getting the air out.
    14,700 gallons IG Pool Vinyl Liner - Octal Circulation System
    Hayward Pro-Series 350 LB. Sand Filter Model # S270T - 2" Plumping
    Hayward CL2002 Chlorinator - Hayward Super Pump 2 HP Model # k48m2n111
    Hayward AQR9 SWG 25K Salt Cell & TF-100 Test Kit + Speed Stir
    Gulfstream HE125RA - 117K BTU Heat Pump - Date of Build is 11-2013

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    JasonLion's Avatar
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    Re: Question on removing water and pushing air through system

    You either need to leave the main valve on filter mode, or drain the filter separately.

    If you have individual valves, it is easier to blow out one line at a time.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Catanzaro's Avatar
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    Re: Question on removing water and pushing air through system

    Can I blow out the lines on recirculate and once done allow water to drain directly out of the sand filter? That was my real question.
    14,700 gallons IG Pool Vinyl Liner - Octal Circulation System
    Hayward Pro-Series 350 LB. Sand Filter Model # S270T - 2" Plumping
    Hayward CL2002 Chlorinator - Hayward Super Pump 2 HP Model # k48m2n111
    Hayward AQR9 SWG 25K Salt Cell & TF-100 Test Kit + Speed Stir
    Gulfstream HE125RA - 117K BTU Heat Pump - Date of Build is 11-2013

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    JasonLion's Avatar
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    Re: Question on removing water and pushing air through system

    Yes, that is fine. You need to deal with draining the filter one way or another. Using recirculate is fine as long as you drain the filter separately.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Catanzaro's Avatar
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    Re: Question on removing water and pushing air through system

    Thank you Jason. There is a drain plug (of course you know that). What air compressor would you recommend? Or is the Rigid Wet Vac or Sears 160 gallon air compressor sufficient?

    My friends are picking up part of the cost in exchange for closing the pools, etc.
    14,700 gallons IG Pool Vinyl Liner - Octal Circulation System
    Hayward Pro-Series 350 LB. Sand Filter Model # S270T - 2" Plumping
    Hayward CL2002 Chlorinator - Hayward Super Pump 2 HP Model # k48m2n111
    Hayward AQR9 SWG 25K Salt Cell & TF-100 Test Kit + Speed Stir
    Gulfstream HE125RA - 117K BTU Heat Pump - Date of Build is 11-2013

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    Pool Tool's Avatar
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    Re: Question on removing water and pushing air through system

    You could probably use the same compressor as you blow out the sprinkler lines with. I have good luck using the drain plug fitting on the pump basket and a 2 hp pancake compressor. It also an adjustable pressure. I start with fairly low pressure until the majority of the water is removed then increase pressure to get the last little bit out. One thing that works well for me is after blowing out each line is to give it a minute or two for the remaining water to find the low spot then blast it again.

    I isolate the suction side and blow that out first then attack the return side. I leave the filter in 'filter mode' while blowing out the return lines. The drain plug is small enough that it takes quite a while to get all the water out. Once pretty solid air is blowing out you can start plugging the return lines, starting at the one with the most air blowing out and working back to the filter. Note - make sure you adjust the air pressure once you plug the last return and have only the drain plug open.

    Overall it is a pretty painless process and easy way to save a few bucks. Good luck, in September that is!
    16' x 32' (21100 gal), vinyl, 1.5 hp Hayward SuperPump,
    Tagelus TA60/60D Sand Filter, Raypak 399K Digital Heater, TF-100

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