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Thread: Big air leak

  1. Back To Top    #1

    Join Date
    May 2009
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    Trenton NJ
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    Big air leak

    I am losing prime, can't find a leak. When I shut the pump off the cover for the skimmer by the pool blew off. Blew basket out too. Lots of air bubbles in the pump basket.

    It will hold prime for awhile then lose it. There is a crack in the union,part that screws on to the threads. Water isn't leaking if there is its very minimal.
    20,000 gallon viking fiberglass pool w/aqua comfort heat pump, pentair whisperflo pump 1.5hp autopilot dig-220 swg w/RC42 cell (42,000), pg2000 fiber optic lights
    hayward sand filter(medium is echoglass)
    Blue diamond robot cleaner

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    Mod Squad Bama Rambler's Avatar
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    Re: Big air leak

    A crack that won't leak water will leak a lot of air. Also sometimes pressure will seal a leak but under a vacuum it will will leak.
    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

  3. Back To Top    #3

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    May 2009
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    Trenton NJ
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    Re: Big air leak

    Why does the skimmer lid blow of like an explosion?
    20,000 gallon viking fiberglass pool w/aqua comfort heat pump, pentair whisperflo pump 1.5hp autopilot dig-220 swg w/RC42 cell (42,000), pg2000 fiber optic lights
    hayward sand filter(medium is echoglass)
    Blue diamond robot cleaner

  4. Back To Top    #4
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
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    22,337

    Re: Big air leak

    When you have an air leak it pressurizes the filter with air. When you shut the pump down the air rushes backward out of the filter, pressurizing the system, and since the skimmer is where it escapes, it blows out there launching the skimmer lid. If you were to purge the air out of the filter just before you shut the pump off it wouldn't do it.
    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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