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Thread: Question about High Suction with an EcoStar VSP

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    phalcon51's Avatar
    Join Date
    Oct 2010
    So. California

    Question about High Suction with an EcoStar VSP

    Just curious. With my new EcoStar VSP what should I consider as the safe upper limit for motor rpm or gpm flow rate? I figure I'm most likely to use the highest rpm while vacuuming or running the Pool Cleaner. The Pool Cleaner in particular has a relatively small suction orifice, about 1" x 1.5" in a "D" shape, and the vacuum suction line is the smaller pipe size of the lot at 1.5". I'm concerned that if the suction was too high it could possibly collapse or crack the pvc pipe. Is this possible, or is the pipe strong enough to withstand that? Or would the pump just cavitate first?

    My old pump was a Pentair SuperFlo, 1.5 hp @ 3450 rpm where the EcoStar is 2.7 hp @ 3450 rpm.

    Thanks for any advice.

    26,200 gal. 35' x 16' Plaster IGP (50 yrs. old), Hayward 48 sq. ft. DE filter, Hayward EcoStar VS pump, Intellichlor IC-40 SWCG, The Pool Cleaner 4X suction, Pool Skim and Pool Devil skimmers. Re-plastered Sept. 2010.

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

    Re: Question about High Suction with an EcoStar VSP

    Rigid pipe will be fine whatever happens. Some kinds of flexible pipe could collapse, though that is rare. Generally the pump would cavitate first, which would be easy to hear.

    2,000 RPM is probably a good top speed for now. Then, depending on how things go, you can adjust it up or down from there.
    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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