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Thread: Variable Speed Pump schedule

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    arrrghmatey's Avatar
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    Variable Speed Pump schedule

    Happy Saturday, all!

    We have a variable speed pump that was previously on a schedule. Unfortunately, be husband decided to push buttons and ended up resetting the whole thing before we could take note of what schedule the pump was on (it may not have even been the best schedule anyway).

    Can anyone tell me the ideal time and rmp speeds we should send our pump for? previously it was running twice a day, I *think* for 4 hours a day.

    Thanks!
    13,500 gallon pool, inground, plaster PebbleSheen installed 04/30/2016. Pentair 4 x 160 Intelliflow pump, Pentair Clean and Clear 240 filter.

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    Mod Squad pooldv's Avatar
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    Re: Variable Speed Pump schedule

    The goal of running your pump is to run it long enough to keep your pool clean and not much more. Set the RPM at a speed that provides good skimming action. For time and for RPM it is best to start low and move up as needed. I would start at 1000 or 1100 rpm for 2 hours in the morning and 2 hours in the afternoon/evening.
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    Re: Variable Speed Pump schedule

    Over in your other thread, I see from the pic you posted that you have what appears to be a suction side cleaner.
    New Member, New Pool Owner (Livermore, CA)

    You may need to run the pump at higher than 1000-1100 rpm to allow the cleaner to do its job. If so, you may want to run the pump at 2500-2900 rpm (as a starting baseline - adjust as needed) for 2 hours in the AM and 1000-1100 rpm in the afternoon. Start out on the low side as far as rpm's and run times. If the cleaner does its job to your satisfaction, you can try decreasing the run time at the higher rpm. Likewise, if the cleaner isn't doing as well as you'd like, maybe increase the AM rpm (in 100 rpm increments) or run the pump in the afternoon for a short period at the same rpm as the AM - during part of the 2 hours afternoon run time. Running at low rpms (1000-1200 rpms) will increase surface skimming effectiveness in most pools. Run at the minimum needed at the higher rpms to allow the cleaner to keep the floor clean. Run the rest of the time at lower rpms to save $$$ on electricity.

    So basically, run it long enough to keep the pool clean and free of debris. Another consideration is running the pump (especially at higher rpms) during off peak electric rate times - if it's a consideration to run during lowest rate times.

    It's a balancing act. Start out as pooldv suggested (4 hours total run time - 2 AM and 2 PM) and adjust from there to your needs/wants. Keep a written log of the settings and results. This will help you pick the optimum for your pool. If, during certain times of year, you get more surface debris you can increase run time at the lower rpm setting to help skim the stuff off the surface (and reset to your normal run time after the debris issue passes).

    As an example of electric usage, my VS pump uses 108 watts/hr at 1100 rpm and around 1600 watts/hr at 2800 rpm. So you can see that running at lower rpms saves a bunch, even if running on low rpms for longer time periods.
    Gene
    ​12,300 gal IG play pool - Pebbletec - built 10/1999 || Hayward S360SX 36" sand filter || Hayward Ecostar SP3400 VSP || A&A In-Floor cleaning system || Quik Water Leveler || Quik Dek-clor (limited use)
    TF-100 testkit / Speedstir - A good test kit is not an expense, it's an investment

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    Mod Squad pooldv's Avatar
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    Re: Variable Speed Pump schedule

    Good catch! Yes, the cleaner will probably want higher RPM. I run mine for an hour or two manually every few days at 1950 or 2500 rpm. I haven't taken the time to coordinate the VS pump timer and the booster pump timer.
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    arrrghmatey's Avatar
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    Re: Variable Speed Pump schedule

    Thank you! I'm sorry I didn't respond to this earlier--we had some family issues come up that swiftly took our time for a couple of weeks, then I was out of town for another couple weeks, and got real busy with deciding to renovate the pool. I will follow your advice once we have everything up and running and adjust as necessary--thanks again!
    13,500 gallon pool, inground, plaster PebbleSheen installed 04/30/2016. Pentair 4 x 160 Intelliflow pump, Pentair Clean and Clear 240 filter.

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