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Thread: flow is bad below 2000 rpm on 4hp pentair

  1. Back To Top    #1

    Join Date
    Nov 2015

    flow is bad below 2000 rpm on 4hp pentair

    Hello all, I have a 30x15 Fiberglass unground pool and a pentair 4hp pump for the filter and salt water converter. I have read that keeping it at a low setting for just the skimmer is the most economic way to keep the pool chlorinated and minimize wattage. The lowest I can get my pump to though is 2000 rpm or else the flow light will turn red and the water will stop moving out of the filter. This seems rather high and I'm wondering if this is normal or maybe the filter set up is too far away from the skimmer. Thanks for any advice.

  2. Back To Top    #2
    mas985's Avatar
    Join Date
    May 2007
    Pleasanton, CA

    Re: flow is bad below 2000 rpm on 4hp pentair

    It could be normal for your setup.

    What is the filter pressure at full speed?

    What size pipe is used from the pool to the pad and back again?

    How far is it from the pump to the pool?

    Also, it would be helpful if you filled out your signature with all your pool and equipment specs: Pool School - Read This BEFORE You Post
    Hydraulics 101; Pump Ed 101; Pump and Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater, ThePoolCleaner

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