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Thread: may have a problem

  1. Back To Top    #1

    Join Date
    Sep 2013
    Location
    San Diego, California
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    may have a problem

    I think I may have a problem with my equipment. This weekend I noticed that the pressure in my filter was a lot less than normal, about 50-60% of normal. The pump seemed much louder and there seemed to be lot of bubbles visible through the window on the pump. I tested the suction from the pool through the hose and that was as normal.

    Anyone have an idea what might be going on?

    Thanks
    1) 14,000 gals
    2) DE filter
    3) In ground
    4) concrete
    5) Flow rate of filter; 120

    Location - San Diego, California

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
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    Re: may have a problem

    Only ways for the pressure in the filter to drop (assuming the gauge is good) would be a blockage between the pool and the pump or between the pump and the filter or the impeller being clogged.

    Or a big air leak between the pool and the pump ... although I think it would have to be a LOT of bubbles for the pressure to drop much.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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  3. Back To Top    #3

    Join Date
    Sep 2013
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    San Diego, California
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    Re: may have a problem

    OK I've spent a bit more time observing this. I have a motorized valve controlling the flow through my roof top solar. When the valve is open and water is pumped to the roof and returned, the system works fine. But when the valve is closed, on a cloudy day for example, there is water leaking and dropping off the bottom of this valve, the pressure in the filter just about halves and the pump gets loud (I think because it's pumping air). So I guess the leaking valve or one of the joints by the valve is letting in air.

    Additional to this is that, after the pump is shut down, air is bubbling through the pipes, up into the roof panels and every 20 minutes or so we get a waterfall through the vertical pipes from roof to ground level,
    1) 14,000 gals
    2) DE filter
    3) In ground
    4) concrete
    5) Flow rate of filter; 120

    Location - San Diego, California

  4. Back To Top    #4
    Mod Squad Bama Rambler's Avatar
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    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: may have a problem

    Sounds like you have a suction side air leak.

    The additional head created by the solar running is reducing the suction head and therefore reducing the size of the leak. Find that leak and you'll most likely find your problem.
    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

  5. Back To Top    #5
    Mod Squad jblizzle's Avatar
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    May 2010
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    Tucson, AZ
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    37,389

    Re: may have a problem

    Surprising that the solar is doubling your pressure. I have a very long run to the house roof in 1.5" pipe and only see a few psi.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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