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Thread: Timer on a 2 speed pump

  1. Back To Top    #1

    Join Date
    Aug 2009
    Location
    Chesapeake, VA
    Posts
    18

    Timer on a 2 speed pump

    Just bought a house with a beautiful i/g pool.

    The pump is a 2-speed model which runs 24 hours a day, about 8 of those on high speed as directed by a mechanical timer. Is this normal to 2-speed pump pools? Should I replace the timer with one that would allow me to run it for 8 hours on low, 8 on high, and 8 off (assuming that would provide sufficient flow to turnover the pool at least twice daily that is)?

    I'm mainly concerned about saving energy if at all possible. Thoughts?
    38,000 gallon IG vinyl-lined pool
    Pentair FNS Plus 60 DE filter
    CompuPool 48 SWG
    Solar Heat

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    21,778

    Re: Timer on a 2 speed pump

    Does your SWG run only when the pump's on high? That may be the reason for the timing like it is.

    If the SWG will only operate with the pump on high then you'll have to figure out if you can either split the time in two sessions and have it shut off part of the day, or run it on high long enough to keep your FC high enough and shut it off the rest of the day.

    Now, if the SWG will operate with the pump running on low you could just run it on low 24 hrs a day and you'd only possibly need to run it on high while vacuuming.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3

    Join Date
    May 2007
    Location
    Round Rock, TX
    Posts
    525

    Re: Timer on a 2 speed pump

    I run my two-speed pump as below:

    4 hours on high to run the cleaner and skim the surface
    8 hours on low to filter and run SWG
    12 hours off

    I've found this provides sufficient circulation, filtration, and chlorine generation for me. It took me a little playing around to get it exactly like I like it, but it works great now.

    dave
    15,500 gal, inground gunite pool with 7 ft spa, 2 speed pump 2hp/.33hp, 3/4 hp booster pump, Intermatic P1353 timer, AutoPilot SC-48, Sand filter with ZeoBest, Heater, that I never use . . .

  4. Back To Top    #4

    Join Date
    Aug 2009
    Location
    Chesapeake, VA
    Posts
    18

    Re: Timer on a 2 speed pump

    Thanks, Dave. I like your approach and is exactly what I was looking for.

    I still need to determine if my SWG works while the pump is on low speed... that would be ideal.
    38,000 gallon IG vinyl-lined pool
    Pentair FNS Plus 60 DE filter
    CompuPool 48 SWG
    Solar Heat

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