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Thread: Underground pool 40K gallons jets work no suction in skimmer

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    Underground pool 40K gallons jets work no suction in skimmer

    So my jets are working fine, but I am getting no suction in the skimmer.
    I have tried it open half way which is how I normally run it and open all the way which is how I vacuum.
    Running a Hayward sand filter.
    Any ideas as to what the problem may be or more importantly how to go about fixing it.
    Very odd because yesterday everything was working fine.
    I tried to backwash and rinse as well to see if that would help ... no luck.

    Thanks in advance.

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    Mod Squad Bama Rambler's Avatar
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    Re: Underground pool 40K gallons jets work no suction in ski

    If the returns are working correctly then the water has to come from somewhere. What is the thing you're adjusting to divert the flow from main drain to skimmer. I suspect it's you problem. It's probably not switching any more.
    Dave J. TFP Moderator
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    Re: Underground pool 40K gallons jets work no suction in ski

    So you are thinking it somehow got stuck closed?
    I am just adjusting a dial that controls how much suction goes to the skimmer.

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    Mod Squad Bama Rambler's Avatar
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    Re: Underground pool 40K gallons jets work no suction in ski

    Is it a valve at the equip pad?
    It's either stuck or the flapper has come loose from the stem.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Re: Underground pool 40K gallons jets work no suction in ski

    Yeah a valve. Any thoughts on a fix?

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    Mod Squad Bama Rambler's Avatar
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    Re: Underground pool 40K gallons jets work no suction in ski

    Can you take a picture or give us the make and model of it?
    How does it feel when turning?
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Underground pool 40K gallons jets work no suction in ski

    Turns fine. Will post a pic in a bit.

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    Re: Underground pool 40K gallons jets work no suction in ski

    see attached
    Attached Images Attached Images

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    Re: Underground pool 40K gallons jets work no suction in ski

    as is the handle is at 50/50 position

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    Mod Squad Bama Rambler's Avatar
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    Re: Underground pool 40K gallons jets work no suction in ski

    Is there water flowing into the skimmer when it's set like this?
    Record the filter pressure. Then turn the valve one direction and record it there. Then turn it the other direction and record the pressure again. Post the pressures and the directions.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Underground pool 40K gallons jets work no suction in ski

    Yes to water flow.
    Pressure gauge is broken.

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    Mod Squad Bama Rambler's Avatar
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    Re: Underground pool 40K gallons jets work no suction in ski

    You need to get that gauge fixed. It makes troubleshooting these type issues easier.
    You can turn the valve one direction and feel the return and then switch it the other and feel it again and see fi there's a difference and which way is stronger.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Underground pool 40K gallons jets work no suction in ski

    If i turn the handle to the right as I am facing it significantly less water in the skimmer by the pump.
    Water flow from the jets does not vary much and is pretty strong. If I had to pick a direction to which that flow was stronger it would be handle to the right as I am facing it.

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    Re: Underground pool 40K gallons jets work no suction in ski

    And in no direction do I get any suction at the poolside skimmer.

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    Mod Squad Bama Rambler's Avatar
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    Re: Underground pool 40K gallons jets work no suction in ski

    When you say 'skimmer by the pump' do you mean the pump strainer basket?

    I had to read your description a couple of times but that makes perfect sense. It's sounding more like you have a partial pluggage in your skimmer line.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Underground pool 40K gallons jets work no suction in ski

    Yeah that is what I mean.
    So a partial pluggage. How do I unplug?
    A massive pool plunger (joking).

    I am pretty "pool dumb", clearly.
    Thank you for all of your help!

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    Mod Squad Bama Rambler's Avatar
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    Re: Underground pool 40K gallons jets work no suction in ski

    You can turn the valve all the way to the left and take the strainer basket lid off and stick a hose wrapped with a rag in the suction pipe and let it run a while. That may dislodge whatever's in there.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Underground pool 40K gallons jets work no suction in ski

    What about a drano like liquid. Commercial grade or to kill roots. Something like that.

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    Mod Squad Bama Rambler's Avatar
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    Re: Underground pool 40K gallons jets work no suction in ski

    I don't think I'd be putting that in my pool if I were you.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Underground pool 40K gallons jets work no suction in ski

    Fixed!

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