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Thread: Little Help needed (prime issue)

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    Little Help needed (prime issue)

    Hey all, long time no post!

    Going through the motions of opening the pool this year. Everything went well until i tried turning the filter to actually filter. On backwash, waste, or the lever in the open position the pump pulls water very well... when I switch it over to filter or recirculate it quickly loses prime...

    If I press down on the lever for a few seconds, it establishes prime again no problem... any thoughts? I walked through the system and dont see any leaks... but I could be missing something... any thoughts would be greatly appreciated!
    Inground Gunite Pool -- Unsure of Pool Size -- Sand WaterCo. T500 Filter -- Hayward SuperPump II (not sure flow)

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    Richard320's Avatar
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    Jan 2010
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    San Dimas, CA (LA County)
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    Re: Little Help needed (prime issue)

    Sounds like an air leak in the spider gasket.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Join Date
    Feb 2008
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    Denton, TX
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    5,061

    Re: Little Help needed (prime issue)

    Quote Originally Posted by Richard320
    Sounds like an air leak in the spider gasket.
    Agreed. Pretty simple fix. You should be able to get a new spider gasket at your local pool store.

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    Re: Little Help needed (prime issue)

    Thanks for the ideas. I actually ended up taking the filter completely apart and thoroghly cleaning the sand. I put it all back together and its working as expected. Thanks again!
    Inground Gunite Pool -- Unsure of Pool Size -- Sand WaterCo. T500 Filter -- Hayward SuperPump II (not sure flow)

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    In the Industry

    duraleigh's Avatar
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    Apr 2007
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    Re: Little Help needed (prime issue)

    I cannot figure out how the filter could have any influence on air in the pump basket but I am glad it worked. I don't think this forum could've ever solved that.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  6. Back To Top    #6

    Re: Little Help needed (prime issue)

    Yeah, it was strange. It felt like an air leak somewhere in the system but I couldnt pinpoint it...

    FWIW its a sand filter, and the (separate pump) only stopped prime when set to filter or recirculate... /shrug... onto the next problem! thx again!
    Inground Gunite Pool -- Unsure of Pool Size -- Sand WaterCo. T500 Filter -- Hayward SuperPump II (not sure flow)

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