Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: 100% short cycle vs 50% long cycle

  1. Back To Top    #1

    Join Date
    Jul 2012
    Location
    Austin, TX
    Posts
    75

    100% short cycle vs 50% long cycle

    Hi all,

    I am new to SWG. I will install a timer just for the SWG. Just wonder if I should run the SWG at 100% in a short cycle or at 50% in a long cycle. These are my considerations:

    1. pool chlorine fluctuation. short cycle = higher fluctuation. Is it harder too keep the pool clean?
    2. Cell life longevity
    3. energy efficiency. The control box runs pretty hot. I don't know if running at 50% or lower may be energy efficiency like a VS pump.


    Scott
    Lazy-L shaped pool and a spa. 22.5k gallons. Pentair VS pump. Pentair cartridge filter CCP520. STA-Rite SR400NA heater (400K BTU). Leuder limestone coping. Pebble sheen (blue granite) Wooden deck.

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: 100% short cycle vs 50% long cycle

    1. Should not matter much ... could run in 2 short periods spread over the day.
    2. Does not matter at all ... life should be related to the generation time which is the same either way.
    3. It is either on or off ... uses the same amount of power when generating.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: 100% short cycle vs 50% long cycle

    The pump is the energy hog. Find out how little you can run it and then figure out how long the SWG needs to run to maintain FC with that many hours of flow. You might be surprised at how little you actually have to run the pump to keep the water mixed and the surface skimmed. It could well end up that you need to run the SWG 80 or 90% to match the pump flow.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  4. Back To Top    #4
    n240sxguy's Avatar
    Join Date
    May 2014
    Location
    Benton, KY
    Posts
    1,800

    Re: 100% short cycle vs 50% long cycle

    Quote Originally Posted by Richard320 View Post
    The pump is the energy hog. Find out how little you can run it and then figure out how long the SWG needs to run to maintain FC with that many hours of flow. You might be surprised at how little you actually have to run the pump to keep the water mixed and the surface skimmed. It could well end up that you need to run the SWG 80 or 90% to match the pump flow.
    Ditto. I'm running my pump 6 hrs a day and varying my swg output depending on conditions outside; temperature, cloudiness, pool use. I'm running the swg 80-85% currently.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

  5. Back To Top    #5

    Join Date
    Jul 2012
    Location
    Austin, TX
    Posts
    75

    Re: 100% short cycle vs 50% long cycle

    I run my pump at 1450 RPM from 6:30 AM to mid-night. To complete one full turnover at the RPM, it takes 24 hours. With SWG matched to the current pump schedule, 55% is still too strong.
    Lazy-L shaped pool and a spa. 22.5k gallons. Pentair VS pump. Pentair cartridge filter CCP520. STA-Rite SR400NA heater (400K BTU). Leuder limestone coping. Pebble sheen (blue granite) Wooden deck.

  6. Back To Top    #6
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: 100% short cycle vs 50% long cycle

    Quote Originally Posted by scott_home View Post
    I run my pump at 1450 RPM from 6:30 AM to mid-night. To complete one full turnover at the RPM, it takes 24 hours. With SWG matched to the current pump schedule, 55% is still too strong.


    I feel extravagant when I ruin my pump more than 4 hours in a day!

    Forget turnovers and go by appearance. Check the link I posted in my last reply.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  7. Back To Top    #7
    n240sxguy's Avatar
    Join Date
    May 2014
    Location
    Benton, KY
    Posts
    1,800

    Re: 100% short cycle vs 50% long cycle

    Before I got my new swg installed I was only running my pump about 2 hours a day just to save money. Pool still looked beautiful. Like Richard said, don't worry about turnover. Go by appearance. If I had/when I eventually get a 2 speed pump, I would run it more just because I like the way it looks when the pump is running.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •