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Thread: Lowest recommended IntelliFlo RPM to still run SWG and skim properly?

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    Lowest recommended IntelliFlo RPM to still run SWG and skim properly?

    My new build is finishing up this week and I'm trying to decide what my game plan is for running the pump and SWG. I have a timer for the SWG installed but I'm leaning towards a low RPM 24/7 as a first cut at it but not sure how low of an RPM I can go to and still get effective SWG and skimming operation.

    Thanks!

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    Mod Squad Jimrahbe's Avatar
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    Re: Lowest recommended IntelliFlo RPM to still run SWG and skim properly?

    Raw,

    All pool plumbing is a little different, so you will have to determine this for yourself..

    Turn on the pump at the lowest rpm and then look at your IC40.. the flow light will most likely be red (no flow)... then slowly keep increasing the pump speed until the flow light turns green. Then add 100 rpm and that is the lowest speed you will want to run...

    My pool runs at 1200 rpm because my salt cell's flow switch closes at about 1100 rpm.. so I added 100 rpm just to make sure. At that speed my skimmers work just fine.

    Don't watch the water flowing by the skimmer and assume they are not working.. Give them a chance to work...

    Thanks for posting,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    mas985's Avatar
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    Re: Lowest recommended IntelliFlo RPM to still run SWG and skim properly?

    Also, look for the water to flow over the skimmer weir door so it pulls it down. If it is flowing around the sides of the weir, the RPM is too low.
    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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    Re: Lowest recommended IntelliFlo RPM to still run SWG and skim properly?

    Thanks for the great suggestions. I have been trying what each of you said and I think I like the results. So as long as the skimmer weir door is pulling down, that means I have adequate skimming? Or could there be case where the door is still down, but skimming doesn't work very efficiently?

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    mas985's Avatar
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    Re: Lowest recommended IntelliFlo RPM to still run SWG and skim properly?

    If the door is not pulled down enough, debris can collect on the door and block the flow so I would set it to the lowest RPM where the water appears to be going over the door and watch it over time to make sure the debris does not stick on the edge of the door.
    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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    Re: Lowest recommended IntelliFlo RPM to still run SWG and skim properly?

    Makes sense... will do. thx!

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