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Thread: New pump now lower pressure

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    New pump now lower pressure

    I have a 25,000 gl. pool. The 1 HP Hayward Superpump just burnt and I replaced it with a brand new Hayward 1 HP pump. The old pump psi was 30-40 and the new pump psi is less than 10. I can't figure out what could be the problem. There are a couple of leaks that need to be fixed but they were there with the old pump, as well.

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    linen's Avatar
    Join Date
    Jul 2010
    Twin Cities, MN

    Re: New pump now lower pressure

    Welcome to tfp, pelinkovicci

    What is the model of you new pump? What kind of filter are you using?

    30 psi is really high filter pressure, 10 is in a much better range. Are you sure that you gauge is working? Does the gauge go to 0 when you turn off the pump.

    What kind of flow are you getting at the pool return?
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: New pump now lower pressure

    That is a psi gauge issue. You either replaced a broken gauge or dislodged something in the old gauge.

    You would have had 0 flow with a true psi of 30-40
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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