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Thread: DIY VFD pump

  1. #1
    Join Date
    Jun 2017
    Location
    Hendersonville, Nc
    Posts
    50

    DIY VFD pump

    Has anyone made their own VFD pump using a pool pump variabe frequenct drive inverter?

  2. #2
    Join Date
    May 2012
    Location
    Livermore, CA
    Posts
    688
    Many pool pumps are not 3 phase, which you need to have for a VFD drive. Secondly, and probably most importantly, do not use a pool pump for beer, it is not sanitary or food grade, and will likely cause you more problems and cost(bad beer) than just getting the right pump to start with.

  3. #3
    Join Date
    Aug 2010
    Location
    Enterprise, Oregon
    Posts
    2,031
    I think he's talking about the VFD, not the pump.

    If the VFD can handle your pump--most VFDs are rated by horsepower--then it's just another VFD. You'll likely need to put it in a wash-down rated housing, and be sure it has enough cooling.

    VFDs are getting cheaper every day, so re-cycling one vs buying new might not make sense.
    Last edited by TGTimm; 10-24-2017 at 02:17 PM.
    Timm Turrentine

    Brewerywright,
    Terminal Gravity Brewing,
    Enterprise. Oregon.

  4. #4
    Join Date
    Jul 2012
    Location
    Burnaby BC Canada
    Posts
    216

    NEW VFDs on clearance sale.

    Great timing

    We got a pallet load of VFDs from a local motor shop that just went out of business. They are a couple of years old but all brand new and still in the original boxes.

    We are passing along the savings a clearing them out.

    https://www.cpesystems.com/collectio...and-used-items

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  5. #5
    Join Date
    Jun 2017
    Location
    Hendersonville, Nc
    Posts
    50
    Yes, I'll be using a food grade stainless pump.
    As for the VFD, it will most likely be new since the prices are reasonable.
    Quote Originally Posted by TGTimm View Post
    I think he's talking about the VFD, not the pump.

    If the VFD can handle your pump--most VFDs are rated by horsepower--then it's just another VFD. You'll likely need to put it in a wash-down rated housing, and be sure it has enough cooling.

    VFDs are getting cheaper every day, so re-cycling one vs buying new might not make sense.

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