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Thread: Sand filter drains quickly

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    Sand filter drains quickly

    I am having a similar problem with a Hayward Super Pump 1.5 HP and a Hayward Sand Filter. The system was installed four years ago and the problem occurs during the first month or so or each season since installation. However, when the pump is turned off while the filter valve is in the filter selection, the sand filter drains quickly and the pump basket drains about half way. I typically have to prime it a couple of times before it finally catches when starting back up, but I also continue to have a small to moderate amount of air bubbles. I have replaced the O-Ring on the pump each year and this year, suspecting the cover to the pump might be faulty (slight ejection of water out between cover and pump basket when pump shut off), I replaced the cover on the pump basket as well. All was well for a week and now the problem returns. I have suspected the possibility that the rings in the filter valve might be the culprit as well - is that a likely possibility. I should replace the sand, so I could do all this at one time.

    Thanks for any help!!

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    frustratedpoolmom's Avatar
    Join Date
    May 2007
    SWSuburban Chicago, IL

    Re: Sand filter drains quickly

    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    Perfectly Clear Pool Service, Find me on Facebook!

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    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    SW Indiana

    Re: Sand filter drains quickly

    Welcome to TFP.

    Have you tried lubing the O-ring on the strainer basket lid with pool lube? This can make a huge difference.

    I have to snug mine down pretty good to get a seal.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    guamguy's Avatar
    Join Date
    Feb 2010
    Guam, USA

    Re: Sand filter drains quickly

    I am having the same problem with mine as well. My filter is a Purex-Triton TR-60. Every time the pump is started, I have to open the manual air bleeder on top of the filter for about a minute to get all the air out. I don't have the air in the pump strainer basket, though. A friend told me it could be the gasket or seals in the multiport valve, so you may want to check that out.
    12,800 gallon IG plaster kidney-shaped pool, waterslide, 800 gallon spa.
    1HP 2 speed Sta-Rite pool pump, 1.5 HP Sta-Rite spa jet pump. 2 skimmers, 1 main drain
    Purex-Triton TR-60 325 lb.sand filter. 2" Plumbing, Intex SWCG, TF-100 test kit.
    Link to pics of my pool!

  5. Back To Top    #5

    Re: Sand filter drains quickly

    Thank you for your responses. I did replace and lube the O-Ring on the strainer basket. In fact, this year I replaced the strainer basket lid as I had noticed some water spurting out from between it and the basket last year. This did solve that problem, but still have the quick drain when pump shut off. I have checked all the above ground pipe fittings for leakes as well, so I am leaning toward the seals in the multiport valve. You can hear the water drain quickly from the sand filter. It's probably a good time to replace the sand as well, so this may be the next step.

    Has anyone had any leak issues that were from the multiport valve and did replacing any items help?

    Thanks again for your help.

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Sand filter drains quickly

    There was a thread a few days ago that had almost the same issue and it was the seals in the multiport. I can't find the thread now but it may 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

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