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Thread: Pool Newbie wants to add a timer

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    Pool Newbie wants to add a timer

    Hey guys. I just got this pool with my house 1 month ago. If it weren't for pool school and all your help, my kids would have been watching me struggle instead of swimming in the pool. Despite my complete ignorance about pools, my pool looks clear and sparkly and works great.

    Pump system:

    Lower pump is booster for vacuum:

    Breaker panel and pool light circuit:

    SWG:


    I just got my first electricity bill and it's more than double what we used to pay at the old house; I'm wondering if the pool could be partly the culprit. The old owner didn't use CYA and ran the SWG at 90% to keep the FC around 3. Based on pool school, I added CYA and now I run the SWG at 35% to keep the FC around 4. The 3/4 HP pump and (sand) filter run 24/7.

    I did a quick search, but I couldn't find a good topic on how to figure out how frequently my water is going through the filter; I thought I read it in pool school but now I can't find it.

    Anyway, I was thinking, why don't I run my pump about 40% of the time with the SWG set to about 90%? We don't have time-of-day electricity billing but I suspect it will arrive shortly. I have a bunch of questions though:
    1. Will cycling the pump motor (or the pump) shorten it's life significantly? It seems to be self priming.

    2. This is the timer I'm planning on.
    http://www.homedepot.ca/product/outdoor ... mer/980580
    Instructions:
    http://waterheatertimer.org/pdf/GE-1525 ... ctions.pdf

    I know I need to connect both the pump and the SWG to the same timer. The pump is wired for 220 V, but the SWG is on a separate breaker at 110 V, through a GFI receptacle. I can swap jumpers and run the SWG at 220 V and I guess lose the GFI. Or should I wire the timer to handle 220 V and 110 V separately, leaving the SWG on it's own circuit with GFI? You can see from the instructions above that that would mean the timer would only interrupt one side of the 220 V circuit to the pump. Any problems with this?

    3. Is it better to run the pump and filter for 35% of every hour or 1-2 longer blocks making up 35% of the 24 hour period?

    4. This is my pump. Is there circuitry available to drive it at low speed all the time instead of intermittently to reduce the power draw? Is that even a good idea?



    Thanks, Tim
    Oval pool, Aqua Rite SWG
    80000 l, 22000 Gal
    Vinyl liner, Sand filter, natural gas heater

  2. Back To Top    #2

    Join Date
    Apr 2011
    Location
    Morgantown, WV
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    Re: Pool Newbie wants to add a timer

    I have the same SWG. There is a "jumper" inside that you can change so the SWG will run on 220 and then you can run the pump and SWG from the same circuit through a timer. I had a similar thread this summer with the responses I got and what I did with a couple pics. It might help you.

    how-do-i-set-my-equipment-up-with-timers-t30514.html
    20x40 IG 30,000 Gal Vinyl
    Hayward 1HP Super Pump, Hayward Perflex D.E. filter, Hayward Universal H-Series 300K BTU heater, Hayward Aqua Rite SWG
    Hayward ColorLogic 4.0 LED Light
    Inter-fab X-Stream slide, Inter-fab Techni-Spring diving board
    APC Auto Safety Cover

  3. Back To Top    #3
    Mod Squad Bama Rambler's Avatar
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    Jun 2009
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    SouthWest Alabama
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    Re: Pool Newbie wants to add a timer

    I would switch the swcg to 240 volt and change the pump breaker to a gfci (which it should be anyway) and use the timer you linked to in DPST configuration. While there's nothing wrong with just breaking one side of a 240 volt leg to control the units it's better practice to break both.
    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

  4. Back To Top    #4

    Re: Pool Newbie wants to add a timer

    I wonder why 240 V GFI's are 10 times the price of 120 V ones... $250! All I can find are the breaker ones. Not ones that go in a receptacle like the 110 V ones.
    Oval pool, Aqua Rite SWG
    80000 l, 22000 Gal
    Vinyl liner, Sand filter, natural gas heater

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: Pool Newbie wants to add a timer

    They are ridiculous and I don't know why.
    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

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