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Thread: Clogged Skimmer Line?

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    ship of fools's Avatar
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    Clogged Skimmer Line?

    Quick question ....... if i shut down the main drain should i be able to keep the pump running without losing prime using just my skimmer line??

    Because i can't ...... does that mean there is a clog in the skimmer line?

    I blew it out with a compressor when i closed and i used a drain king this spring when i opened (water flowed smoothly) but as soon as i shut down the main drain the water stops pumping.
    21,000 gallon inground
    Haywood Sand Filter
    Vinyl Liner

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    Re: Clogged Skimmer Line?

    does that mean there is a clog in the skimmer line?
    Not always but usually. Try closing the main drain slowly or partially and see if the water flow from the skimmer increases.

    It is possible the skimmer alone restricts the intake enough for you to drop prime by causing a temporary suction leak.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    ship of fools's Avatar
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    Re: Clogged Skimmer Line?

    Quote Originally Posted by duraleigh
    does that mean there is a clog in the skimmer line?
    Not always but usually. Try closing the main drain slowly or partially and see if the water flow from the skimmer increases.

    It is possible the skimmer alone restricts the intake enough for you to drop prime by causing a temporary suction leak.

    As soon as i begin to close the valve it begins to lose prime.

    I don't remember it being like that in the past.

    If it is clogged would a plumbers snake be safe to use??
    21,000 gallon inground
    Haywood Sand Filter
    Vinyl Liner

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    Mod Squad Bama Rambler's Avatar
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    Re: Clogged Skimmer Line?

    Is there air getting into the pump basket all the time or just when you start closing the main drain valve?

    Is the skimmer creating a vortex when you close the MD valve?
    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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    ship of fools's Avatar
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    Re: Clogged Skimmer Line?

    Quote Originally Posted by Bama Rambler
    Is there air getting into the pump basket all the time or just when you start closing the main drain valve?

    Is the skimmer creating a vortex when you close the MD valve?

    1 - there are some bubbles at all times

    2 - i don't believe so but how would i tell??
    21,000 gallon inground
    Haywood Sand Filter
    Vinyl Liner

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    Re: Clogged Skimmer Line?

    1 - You have a suction side air leak. Somewhere between the pump and the skimmer(s), air is being sucked into the system.

    2 - Go look at the skimmer with the pump running. If it's sucking air, you will see the mini-tornado.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad Bama Rambler's Avatar
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    Re: Clogged Skimmer Line?

    If you're not getting the vortex in the skimmer body then check the common places to have a leak.
    The pump basket lid o-ring. Clean and lube it well with pool lube.
    The pump and basket drain plugs. Remove, clean and reseal them.
    Any fittings near the pump, Including the adapter on the front of the pump basket. Run a water from a hose over it and if the bubbles in the basket reduce you've found a leak.
    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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    ship of fools's Avatar
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    Re: Clogged Skimmer Line?

    Quote Originally Posted by Bama Rambler
    If you're not getting the vortex in the skimmer body then check the common places to have a leak.
    The pump basket lid o-ring. Clean and lube it well with pool lube.
    The pump and basket drain plugs. Remove, clean and reseal them.
    Any fittings near the pump, Including the adapter on the front of the pump basket. Run a water from a hose over it and if the bubbles in the basket reduce you've found a leak.

    will do ..... thanks to both of you

    i am in upstate ny and my water temp is mid 40's but i figured i would open it up and get rolling on this stuff

    on a bright note the water looked great when i opened and it looks like i need a grand total of $30 dollars worth of stabilizer and bleach to get rolling ...... vast improvement over dropping 3 bills at the pool store
    21,000 gallon inground
    Haywood Sand Filter
    Vinyl Liner

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