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Thread: Hayward Sand Filter Pressure problems...

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    Hayward Sand Filter Pressure problems...

    Hi. I have a Hayward sand filter on my pool and currently the pressure gauge is reading over 50PSI when turned on. I have backwashed and the pressure does not drop. When I turn the filter off, the pressure only drops to 30PSI, not 0. I can also hear a gurgling or some type of sound at the top of the filter when it is turned off. And when I turn it on, there is water running down the filter. Do I need to change my sand? Or do I need to replace the gauge since it is going all the way to 0? The gurgling and water running down concern me that sand is causing pressure build up and needs to be removed/replaced. We have had our pool around 3 years and keep it open year round as it is enclosed. Our equipment is in an enclosed pump house. Normally we keep the pump/filter running all the time when it is cold, but it did drop down below 30 degrees suddenly and I forgot to leave the pump/filter running. Water is still coming out of the jets, so I don't think there is a freezing problem, but just wanting to make sure there isn't frozen sand inside the filter causing pressure build up.

    Any advice/suggestions would be greatly appreciated. We try to swim everyday as I use it for therapy for health problems.

    Thank you!

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    Smykowski's Avatar
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    Re: Hayward Sand Filter Pressure problems...

    Welcome to the forum!

    If the gauge doesn't go to zero when the pump is off, it's broken and needs to be replaced.

    Can you explain a little further what you mean by water running down the filter? Do you mean the outside?

    Also, please give us as much info about your setup as possible. See this post.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    Re: Hayward Sand Filter Pressure problems...

    Sorry here is some more info. on our pool:

    14 x 32 fiberglass inground pool, around 10,000 gallons.

    The water does seem to run down around the seal or top part of filter, not leaving from the bottom or anything....and the water only runs down at initial start of the filter, almost like it's letting out some pressure and water leaks out, not sure. It doesn't do it all the time, but right now the gurgling sound is there even when everything is turned off.

    So, I need to replace the gauge, but what about the sand? And can I run the pool right now while I am waiting on getting a gauge here?

    Thanks!

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    linen's Avatar
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    Re: Hayward Sand Filter Pressure problems...

    Welcome to tfp, bcpool

    It sounds like your filter is leaking somewhere letting air in when the pump is off and letting water out when the pump is on. What brand/model do you have?

    Replace the gauge.

    There are very few reasons to ever replace sand. If you want to check your sand and clean out the filter you can follow these instructions: http://www.troublefreepool.com/my-sa...-it-t7626.html

    Quote Originally Posted by bcpool
    And can I run the pool right now while I am waiting on getting a gauge here?
    Yes, but find the leak and get it fixed.
    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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    Smykowski's Avatar
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    Re: Hayward Sand Filter Pressure problems...

    Do you have a model number for the filter? If it's a 180T/244T series, either the collar isnt tight enough, or the oring between the collar and the housing is not seated properly or jeeds to be replaced.

    Is the leaking gurgling a new problem, or has it been going on for awhile?
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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