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Thread: Hayward DE 4820 (HELP!)

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    Join Date
    Jan 2012
    Carrollton, Tx

    Hayward DE 4820 (HELP!)

    I am clearing a swamp. If I leave the pump on overnight and the pressure rises to high will the filter cut off?

    22000 Inground gunite. Hayward DE filter - SWG Aqua Rite T-15 - Gas Heater

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Hayward DE 4820 (HELP!)

    No. Your pump is capable of about 35-40psi or so. If the filter gets blocked, the psi will stop around there. Sometimes harmless enough but....

    1. It will find any weak area on your pressure side and possibly spring a leak

    2. You will waste ALL the electricity because your pump isn't doing any good.

    3. You could theoretically overheat the pump and cause failure.

    All in all, not a good idea. DE filters are troublesome to clean a swamp because they clog quite quickly. You are better off to run the pump when you can monitor it and backwash/recharge the filter after about a 20% rise in psi.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Join Date
    May 2007
    South Central NJ

    Re: Hayward DE 4820 (HELP!)

    If you have to circulate overnight, use the Recirc/BOOST setting on your multiport. This will bypass the filter tank.

    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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