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Thread: Backwashing with an Intelliflo VS

  1. Back To Top    #1

    Join Date
    Jan 2013
    Location
    Costa Rica
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    2

    Backwashing with an Intelliflo VS

    Hi,

    First post here, thanks this site has been a great help whilst I have been building my new pool.

    Setting everything up for the first time today and installed a Pentair intelliflo pump the pool is 13,000 gal with twin drains and skimmers. The pump is revelation, filters nicely at 900rpm/110watts and skims efficiently at 1600rpm /400 watts.

    My question is when I turn the pump on it primes itself at full speed 3400rpm, what do I when I backwash?

    If I shut everything down and turn the filter (sand) to backwash and switch on the pump is it a problem that it will prime itself at that speed through the filter, same goes for rinse too?

    Thanks in advance.

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
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    37,879

    Re: Backwashing with an Intelliflo VS

    Welcome to TFP!

    The priming/maximum speed can be configured on the pumps setup menu. Depending on your filter size, you probably want to turn it down to something lower than 3400 RPM.

    You want a relatively high speed for backwashing the filter. Just how high a speed depends on the size of your filter. A typical filter needs somewhere around 2000 RPM, but it varies quite a bit with filter size, with larger filters requiring a faster speed.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Join Date
    Jan 2013
    Location
    Costa Rica
    Posts
    2

    Re: Backwashing with an Intelliflo VS

    Thanks,

    I will turn it down to 2000 rpm as soon as my neighbour returns my manual.

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