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Thread: What rpm to run hayward Max-flo vs pump??

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    What rpm to run hayward Max-flo vs pump??

    Hi guys,

    Just installed new Hayward max-flo vs pump with Hayward pro grid de filter. I am trying to take advantage of the lower rpm settings and want to set it to turnover water once every 24hrs...

    Pool is around 32000 gallons
    Piping is 1 1/2
    Pro grid de filter
    10psi at full speed with filter clean
    Reads 147 watts at 1500rpm

    I've read this is difficult to calculate but can someone just helps get close?
    30,000 gallon In-Ground vinyl, small fountain, Polaris 9300 robotic cleaner

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    mas985's Avatar
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    Re: What rpm to run hayward Max-flo vs pump??

    want to set it to turnover water once every 24hrs...
    Why?

    Read this first: Pool School - Determine Pump Run Time

    If you don't believe that you can have a clean pool which such little run time, then read the article in my signature regarding pump run time.

    But your flow rate is about 30 GPM at 1500 RPM.
    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: What rpm to run hayward Max-flo vs pump??

    Ok great info thanks. So where would you start? Not much debris enters the pool, I do have a swg so I need to make sure I have the % / run time set right so the chlorine is good. Pump goes down to 600rpm. I just went with once a day bc I have read that on this site before.

    Thanks
    30,000 gallon In-Ground vinyl, small fountain, Polaris 9300 robotic cleaner

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    Mod Squad pooldv's Avatar
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    Re: What rpm to run hayward Max-flo vs pump??

    I run my VS pump at 1100 rpm, gives me good skimmer action and gives the SWG enough flow to make chlorine. Draws 150 watts.
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    mas985's Avatar
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    Re: What rpm to run hayward Max-flo vs pump??

    I would go by the SWG because that is likely to be the limiting factor and will probably drive run time. Set the SWG for 100% and then adjust run time to get to the appropriate FC level. Probably at least 4 hours.

    As for RPM, that is basically trial and error. Usually the skimmer will stop working when flow rates get too low. However, if you don't have a lot of debris and your only requirement is for chlorine, then you can choose the lowest RPM available as long as the flow rate is high enough for the SWG.
    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: What rpm to run hayward Max-flo vs pump??

    I will try that. That was very helpful, thanks for your time.
    30,000 gallon In-Ground vinyl, small fountain, Polaris 9300 robotic cleaner

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    Re: What rpm to run hayward Max-flo vs pump??

    Quote Originally Posted by pooldv View Post
    I run my VS pump at 1100 rpm, gives me good skimmer action and gives the SWG enough flow to make chlorine. Draws 150 watts.
    How long do you run at 1100 rpm daily?
    30,000 gallon In-Ground vinyl, small fountain, Polaris 9300 robotic cleaner

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    Mod Squad pooldv's Avatar
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    Re: What rpm to run hayward Max-flo vs pump??

    We have lots of trees, donkeys and dogs. During busy tree time spring and fall it runs 24x7. Once I go out enough times in a row and there isn't much stuff in my pool I dial it back to 12 hours. But, it costs less than 12 bucks a month to run my pump 24x7 so I'm not in a hurry to dial it back. And when it gets below freezing I run it 24x7 also.

    My SWG is on its own timer, it is running 6 or 7 hours right now.
    TFP Moderator
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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