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Thread: PSI Loss

  1. Back To Top    #1

    Join Date
    May 2010
    Location
    SW Georgia
    Posts
    298

    PSI Loss

    In the last week my PSI at the filter has dropped from 13psi to 9psi. I can only think of three things that my be the problem:
    1. Gauge is bad
    2. Pump is going bad
    3. Blockage in pipe between skimmer and pump

    Are these the only reasons or have I missed some?

    Replacing the gauge is easy and cheap.
    How can you tell if it is the pump or not?
    35K IG Vinyl 20 x 40 self built pool, Hayward Pro Series High-Rate Sand Filter 31" 98gal/min, Hayward TriStar 1.85hp, Hayward 400btu heater, BBB method w/Hypo, Jazz light w/matching fiber optic rope lighting around coping w/syncronized color wheels. Concrete Paver deck.

  2. Back To Top    #2
    UnderWaterVanya's Avatar
    Join Date
    Jun 2012
    Location
    Mint Hill, NC
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    2,589

    Re: PSI Loss

    Quote Originally Posted by jasonknox
    In the last week my PSI at the filter has dropped from 13psi to 9psi. I can only think of three things that my be the problem:
    1. Gauge is bad
    2. Pump is going bad
    3. Blockage in pipe between skimmer and pump

    Are these the only reasons or have I missed some?

    Replacing the gauge is easy and cheap.
    How can you tell if it is the pump or not?
    Any air in the basket?
    I recently figured out that my suction side valves were not all the way open and before opening them I had minimal but not zero air in the basket. After opening them and getting rid of the air, my pressure jumped up 2.5 PSI.
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

  3. Back To Top    #3

    Join Date
    May 2010
    Location
    SW Georgia
    Posts
    298

    Re: PSI Loss

    There is no air in the basket and I actually checked it with all supply valves open (two skimmers, main drain, and dedicated vacuum line).
    35K IG Vinyl 20 x 40 self built pool, Hayward Pro Series High-Rate Sand Filter 31" 98gal/min, Hayward TriStar 1.85hp, Hayward 400btu heater, BBB method w/Hypo, Jazz light w/matching fiber optic rope lighting around coping w/syncronized color wheels. Concrete Paver deck.

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

    Re: PSI Loss

    Partial clog in the pump impeller!

    Have you checked to see if it clean?
    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

    Join Date
    May 2010
    Location
    SW Georgia
    Posts
    298

    Re: PSI Loss

    Nope, I did not consider that but I will certainly check it. Thanks.
    35K IG Vinyl 20 x 40 self built pool, Hayward Pro Series High-Rate Sand Filter 31" 98gal/min, Hayward TriStar 1.85hp, Hayward 400btu heater, BBB method w/Hypo, Jazz light w/matching fiber optic rope lighting around coping w/syncronized color wheels. Concrete Paver deck.

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