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Thread: Blowing out the skimmers on IGP -- blowing from the pump

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    Blowing out the skimmers on IGP -- blowing from the pump

    I plan to close my IGP myself for the first time this year, after watching the pros do it the last couple years. I plan to hook my rather large Craftsman air compressor up to the drain hole on the pump, and push the water out the returns and skimmers, then blow air through the main drain and airlock. I've already done a "practice run" and got air bubbles through the MD.

    My question is this: when blowing through the skimmers (I have two), how do I stop the blown out water from running back into the skimmer? The hole in the skimmer is at the bottom, and its 10 inches deep or so. When I blow air from the pump and out the skimmer, it seems a lot of water will be left in the skimmer, and just run right back in. It seems the pros just let this happen, then added antifreeze. I'd rather blow it dry.

    I was thinking of some sort of "hose" which would screw into the bottom of the skimmer, and blow the water out through that. Do they make anything like this -- it would need the same threads as a gizmo.
    30,000 galllon, inground, vinyl liner, L-shaped pool
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    Re: Blowing out the skimmers on IGP -- blowing from the pump

    I use a large gizmo that has a hole and plug on the top.

    Install the gizmo. This should get the hole on top of the gizmo above the water line. Then blow the lines. The water will blow out the top hole on the gizmo. Then I add some antifreeze back in the hole just in case and install the plug in the hole.

    This is how my pool builder does it and he was kind enough to walk me through it.
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    DaveNJ's Avatar
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    Re: Blowing out the skimmers on IGP -- blowing from the pump

    I screw a pvc pipe into the skimmer with a shutoff and air hose fitting. I can shut the air off to change valve(s) positions.
    IG 18x36 oval vinyl, Spill over spa, Northstar 2hp-2spd, 2.5" piping, S310T 500lb Sand filter, 400k gas heater, AutoPilot SWCG
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    Re: Blowing out the skimmers on IGP -- blowing from the pump

    Quote Originally Posted by KNIGHTCAP
    I plan to close my IGP myself for the first time this year, after watching the pros do it the last couple years. I plan to hook my rather large Craftsman air compressor up to the drain hole on the pump, and push the water out the returns and skimmers, then blow air through the main drain and airlock. I've already done a "practice run" and got air bubbles through the MD.

    My question is this: when blowing through the skimmers (I have two), how do I stop the blown out water from running back into the skimmer? The hole in the skimmer is at the bottom, and its 10 inches deep or so. When I blow air from the pump and out the skimmer, it seems a lot of water will be left in the skimmer, and just run right back in. It seems the pros just let this happen, then added antifreeze. I'd rather blow it dry.

    I was thinking of some sort of "hose" which would screw into the bottom of the skimmer, and blow the water out through that. Do they make anything like this -- it would need the same threads as a gizmo.
    Sounds to me like your using a "gizzmo, or skimmer tube" without a hole in the top of it. We do not let the water just rush back into the skimmer! What your going to have to do is get a buddy, or wife, or someone with 2 hands to help you. Keep the water level in the pool about an inch lower then the middle of the skimmer. Unless you have a mesh pool cover then id drop it about an inch below the skimmer. Hookup your blower and blow out the skimmer line. Let it blow for a good, i dont know.. 10-15 seconds and while its blowing.. you, or your helper can then screw the gizzmo into the skimmer. depending on how you have your blower setup, once you plug the skimmer another pipe will start to blow out.. might be the other skimmer, or could be one of the return lines... let that one blow for same amount of time and then plug it... you do this until all the lines are blown out and plugged.
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    Re: Blowing out the skimmers on IGP -- blowing from the pump

    We blow out skimmers when the water is below the skimmer and blow from skimmer to pump letting water drain from the pump via drain plugs
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    Mod Squad JohnT's Avatar
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    Re: Blowing out the skimmers on IGP -- blowing from the pump

    My skimmer looks like a whale breaching when I blow with a vacuum from the pump end. Water goes everywhere, with very little returning to the skimmer.
    TFP Moderator
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    Re: Blowing out the skimmers on IGP -- blowing from the pump

    Thanks for the replies. I don't want to blow from the skimmer to the pump -- I want to blow from the pump to the skimmer. I think I have a solution -- I tried using one section of Kreepy Krauly hose, and it fits pretty well into the hole in the bottom of the skimmer. I'll put in a piece of this hose and direct the other end into the pool. With the water level below the skimmer, this should blow all water out of the skimmer line.
    30,000 galllon, inground, vinyl liner, L-shaped pool
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    Re: Blowing out the skimmers on IGP -- blowing from the pump

    I must be missing something. Don't you have to lower the water to below the returns? That means lower than the skimmer so water going back in should be a non issue, no?
    19.5k gallons in ground, P4 panel with turbocell SWG, 1hp Hayward superpump II, sand filter, Heater low nox 250k btu heater, solar cover on rocky roller

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    Re: Blowing out the skimmers on IGP -- blowing from the pump

    Quote Originally Posted by mart242
    Don't you have to lower the water to below the returns?
    No, you dont need to do that. It's one of those things that you think you know, but its not really true. Once you have air blowing through the pipe and the water is bubbling, the pipe is mostly full of air. You can screw in the plug while the air is blowing and the water is bubbling and that will work just as well. It's the same with the skimmer. You can plug it with the gizmo while the water is bubbling and it works the same way.
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

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    Re: Blowing out the skimmers on IGP -- blowing from the pump

    I stick a shopvac hose into the skimmer with the shopvac running. Then the water that blows out of the skimmer and falls back gets vacuumed up. However, the idea of the Gizmo with the hole/plug in the top is intriguing, and I need a new Gizmo this year anyway (my old one cracked and it didn't have a hole in the top).
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