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Thread: Pentair de filter back pressure

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    Pentair de filter back pressure

    Hello, I just installed a pentair intelliflo 3050, pentair de filter fns60. I had a pool profesional come out and inspect my pump for air leaks since the pump would develop air bubbles after 2 hours of running. The pool profesional said my filter was clogged and causing back pressure. I removed the grids and hosed them down, reinstalled into a clean filter hosueing. I still am having air bubbles entering my pump after 2 hours. My water was dark black and green, 35,000 gallons, using the information on this website I now have the water slightly cloudy blue. I am low on ta, every other chemical is at the normal.

    My question is when is the filter going to not clog and allow me to run it 8 plus hours a day? is the water still dirty even tho it is not green and sludge looking? My pressure starting out is 15, then goes up to 25 and starts developing the bubbles. Any help is appreciated. I did search for back pressure and could not find anything.

    thanks

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    In the Industry

    Join Date
    May 2010
    Location
    Asheville, NC
    Posts
    14

    Re: Pentair de filter back pressure

    Does the pressure go back down after you backwash and rinse the filter? You may have to just backwash\rinse every couple of hours until the water is clear.
    ASP Pool and Spa of Asheville

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    Re: Pentair de filter back pressure

    Yes the pressure returns to 15psi, then after 2 hours returns to 30. I was just worried I will have to do this everyday for the life of the pool .

    thanks for the info.

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    no-mas's Avatar
    Join Date
    Jun 2008
    Location
    FL
    Posts
    405

    Re: Pentair de filter back pressure

    Quote Originally Posted by sjpobox
    Yes the pressure returns to 15psi, then after 2 hours returns to 30. I was just worried I will have to do this everyday for the life of the pool .

    thanks for the info.
    You'll be fine. My fns+ 36 runs for many, many weeks before needing a backwash.
    18k gal inground, everbrite finish, 505 sq ft; 1.5 hp two speed whisperflow; rheem 5100ti 100k btu heat pump; 3 sheer descent falls; DE filter; swg (cell out and using trichlor for now)

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    Re: Pentair de filter back pressure

    ok thanks for the help!!

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