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Thread: Hayward 1 horse constant pressure loss

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    Join Date
    Jun 2014
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    Ontario Canada
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    2

    Hayward 1 horse constant pressure loss

    Hello there

    I have an in-ground pool with the Hayward self priming pump and a Pantera sand filter. Everything has been working fine until this morning. The pump fills up and maintains perfect pressure for a few seconds then completely drains and refills. It does this constantly. I do not have a a weir door on the skimmer and don't think there is blockage or leakage because it does reach full pressure before collapsing. Does anyone know the answer to this Mystery?

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    Join Date
    Jul 2011
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    phoenix
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    129

    Re: Hayward 1 horse constant pressure loss

    Mine does the same thing but it's usually some air in my cleaner hose. Any chance you have a cleaner hose sucking air? Have you tried switching diverter valve to main drain or just cleaner depending on your setup


    13k IG pebble pool w/waterfall, 1hp whisperflow pump, pentair ccp320 cartridge filter
    Circupool SI45+ swg
    TF100 +speed stir Taylor 1766 salt test

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    Join Date
    Jun 2014
    Location
    Ontario Canada
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    2

    Re: Hayward 1 horse constant pressure loss

    The water level in the pool was low but had operated fine at this level in the past. Just the same, I put the hose on it and problem goes away. While happy for the easy fix, it is puzzling and I wonder if anyone has some insight for me. Thank you

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    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
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    11,489

    Re: Hayward 1 horse constant pressure loss

    Sounds like the skimmer is sucking air. Make sure the water level is half way up the skimmer opening. Then watch the skimmer and make sure it is not sucking air.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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