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Thread: High pressure on startup

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    Join Date
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    High pressure on startup

    Just opened my my in-ground pool today. Probably the easiest opening in the four years we have been in this house.

    The good news is that I'm getting the best pressure I have ever had on the returns. Everything seems to be working correctly, BUT the pressure is super high -- around 50 psi, and sometimes closer to 60 psi. Nothing has changed on the system since last year.

    At first I thought it might just be a bad pressure gauge. But I'm discounting that because the pressure coming off the returns is much greater than in past years. I backwashed, but that didn't seem to make much difference.

    Suggestions?

    Thanks
    _______
    35,000 IG vinyl with new Hayward Sand filter in 2006, chlorinator, Hayward 1.5HP Super Pump, Polaris with own pump, gas heater, 2 skimmers, 2 returns, no main drain.

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    Mod Squad JohnT's Avatar
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    Re: High pressure on startup

    You are confusing pressure and flow. Your gauge measures pressure, and it is most likely defective. Flow is what you feel from the returns. If your gauge reads high pressure, and your flow is low, you have a problem in the filter or lines, but high pressure and high flow usually indicates a gauge problem.

    50+psi is beyond the capability of most pool pumps.
    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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    JasonLion's Avatar
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    Re: High pressure on startup

    To say what JohnT said in a slightly different way: High flow from the returns means the pressure must actually be fairly low, so your gauge must be broken. Likewise pool pumps top out at about 45 psi max, so again your gauge must be broken.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: High pressure on startup

    Thanks. I'll try getting a new gauge in the morning and will update you on the results.
    _______
    35,000 IG vinyl with new Hayward Sand filter in 2006, chlorinator, Hayward 1.5HP Super Pump, Polaris with own pump, gas heater, 2 skimmers, 2 returns, no main drain.

  5. Back To Top    #5

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    Re: High pressure on startup

    JohnT and Jason,

    Problem solved. You were correct. Thanks.
    _______
    35,000 IG vinyl with new Hayward Sand filter in 2006, chlorinator, Hayward 1.5HP Super Pump, Polaris with own pump, gas heater, 2 skimmers, 2 returns, no main drain.

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