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Thread: Pump Suggestions Please - Replacing A Sta-Rite Dyna-Glas 1HP

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    Question Pump Suggestions Please - Replacing A Sta-Rite Dyna-Glas 1HP

    After help on this forum and a lot of investigation, I have determined that we need to replace our pump and we can have a variable speed pump.

    The current set-up is pretty basic:

    • 1 HP Sta-Rite Dyna-Glass Main Pump (MPRA6E-147L) which has 2" piping (at least that is what the pump manual says)
    • 3/4 HP Booster Pump for Polaris 280 cleaner (which is also beginning to have its own running issues)
    • Goldline Chlorine Generator
    • ~30,000 gallon pool
    • Heater
    • Breaker Panel with 220 split into two 110 lines and capable of handling a 1 phase power setup needed for a vs pump.
    • Slide - which requires some of the regular returns to be closed to create enough pressure

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    There are no timers or automation. The set-up is about 12 years old and is active from June - September. Because we didn't know any better, the main pump was on 24/7.

    I like the idea that we can save quite a bit of money replacing the pump with a two speed or variable speed pump. Since we don't have any automation, the variable speed with on-board programming seems attractive, even though it has a higher initial price. The downside I have read about the cheaper VS pumps, is that their programming is basic (count-down timer instead of based on clock, no ability to turn pump off and on automatically, etc....). The more expensive VS pumps (~$850 Intelliflo VS) seem to have a much higher horsepower, but offer the better automation (programming via a clock, possibly the ability to control power on and off times, etc....). I don't know if the higher horsepower will offset a lot of the energy savings the replacement is supposed to give us. I know that the Intelliflo's 3 horsepower is overkill, but if it doesn't kill the energy savings, it might be worth it.

    I would appreciate people's insights and comments. It is possible that my observations and assumptions are wrong, so any corrections would also be beneficial. I am looking to order this week, so I can get the pool opened for the year.

    Thank you very much for your time and insight. I am not very "techie" when it comes to pools (computers on the other hand..., hehehehe), so I value other's advice.

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Pump Suggestions Please - Replacing A Sta-Rite Dyna-Glas 1HP

    You have things fairly well in hand. The only amendment I will make is that the only disadvantage of the 3 HP motor is the up front cost. It excels at low speeds.
    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

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