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Thread: Speed change for 2 speed motor

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    Speed change for 2 speed motor

    I recently replaced my Hayward Northstar pump. It has a 2HP, 2 speed motor and although I believe I wired it exactly like the old one it is running at low speed. Anyone know how to change it to high speed?
    IG 14 x 28 ~14,000 gal.
    Vinyl liner
    Catridge filter, Gas heater

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

    Re: Speed change for 2 speed motor

    Welcome to TFP!

    I take it that your old pump was also a two speed?

    The same model pump from the same manufacturer can occasionally have different motors, or be using an updated motor design. You should double check the wiring diagram, which will appear on the outside of the motor, and make sure they haven't moved the terminals around somehow.
    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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