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Thread: Zero pressure on filter??

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    Join Date
    Apr 2010
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    Sunny Phoenix AZ
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    74

    Zero pressure on filter??

    Hi guys, I just backwashed my system as usual, and I can't get the pressure on the filter to rise above zero. If I partially close the return valve the pressure gauge rises, so I'm reasonably sure the gauge isn't to blame. Normally it sits around 15-18psi.
    The system is flowing water; the pool vac is operating although it seems as if the pressure is actually lower than usual.
    What am I missing here?
    28,000 gallons / Plaster / Hayward 30" Sand Filter / PoolCleaner 4x / PoolSkim / Hayward RS1500 / CircuPool RJ60

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    Ohm_Boy's Avatar
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    May 2007
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    Orlando, FL
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    1,344

    Re: Zero pressure on filter??

    Did you put enough DE back in the system after the backwash?
    [center:1kpalu48]Helpful Links: Pool School | CYA/Chlorine Chart | Pool Calculator[/center:1kpalu48]

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    Apr 2010
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    Re: Zero pressure on filter??

    Nevermind...solved it. Impeller had a wad of **** in it...thanks
    28,000 gallons / Plaster / Hayward 30" Sand Filter / PoolCleaner 4x / PoolSkim / Hayward RS1500 / CircuPool RJ60

  4. Back To Top    #4

    Join Date
    Feb 2011
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    La Quinta, CA
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    21

    Re: Zero pressure on filter??

    15to 18 lbs is normal reading.....anything higher than 25 indicates your filters are getting very dirty. A zero reading means the filter system is not working. Time for new filters

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    dmanb2b's Avatar
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    Apr 2009
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    NY
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    Re: Zero pressure on filter??

    Quote Originally Posted by Rockman59
    15to 18 lbs is normal reading.....anything higher than 25 indicates your filters are getting very dirty. A zero reading means the filter system is not working. Time for new filters
    Or like the OP mentioned, it could have just been a clogged impeller or even a bad gauge. I'd hate to see someone replace their filter just because the gauge reads zero, before trouble shooting the issue first.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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