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Thread: Minimum Flow that is required

  1. Back To Top    #1

    Join Date
    Nov 2015
    McAllen, Texas

    Minimum Flow that is required

    My VF pump is down to about 20gpm and was wondering it that is enough for the SWG to function correctly. It is sensing flow so I am assuming as long as that is happening then the unit should run correctly. Running my pump for 12 hrs daily.

    14K IG Plaster pool approx. 15 yrs old Pentair Intelliflo VF 011012 pump Pentair IntelliChor SWG IC40 Pentair FNS Plus 48 sq ft DE grid filter Raypak C-R407A Natural Gas pool heater Pool Valet in floor cleaning system with 5 zones in pool and 1 zone in spa TF-100 test kit on the way

  2. Back To Top    #2

    Join Date
    Sep 2013
    Charleston, SC

    Re: Minimum Flow that is required

    As long as your SWG is producing, there is not need to do anything else. I run my VS pump at 1000 RPMs and that gives mine enough flow. AS the temperature of your water decreases, so will your FC consumption and you can decrease your pump run time accordingly. Mine is now down to 6 hours a day with my SWG at 20%. Each pool is different and you are the best judge as to what yours needs.
    5900 G Fiberglass IG pool (circa 1990), SWG Hayward Aqua Rite GoldLine (2013), IntelliFlo Variable Speed Pump (2013), Hayward Pro Sand Filter (circa 1990), Well water (no iron or other metals fortunately), test with Taylor K2006C, Charleston, SC

  3. Back To Top    #3

    Join Date
    Jun 2011
    Long Beach, CA

    Re: Minimum Flow that is required

    Pentair says the IC40 needs a minimum of 25GPM of flow, but you should not worry about it if it is still showing good flow on the SWG. If you notice that the SWG is working intermittently then you might have to bump up the flow.

    You'll want to check your FC when you get the TF-100 as the SWG could easily be making too much chlorine with a 12 hour run time. You don't list any automation in your specs so I'm assuming that the SWG is set to 20%.

    Post a full set of test results when you get the TF-100.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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