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Thread: pump capacitor

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    pump capacitor

    Can I temporarily use a 3/4 hp pump start capacitor in a 1 hp pump? that is until I can get a new one Monday.
    14,500 gal pool
    Inground
    Plaster
    Intellichlor Salt Generator
    Water Fall

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    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    Location
    SW Indiana
    Posts
    9,086

    Re: pump capacitor

    The actual capacitance and voltage rating determine whether you can use it, not the motor size. The value will be in mfd or ?F.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    Re: pump capacitor

    Quote Originally Posted by JohnT
    The actual capacitance and voltage rating determine whether you can use it, not the motor size. The value will be in mfd or ?F.
    The capacitor I want to "borrow" is a 25 from my whisperflo fountain pump and the one I want to replace on the whisperflo filter pump is a 30.
    14,500 gal pool
    Inground
    Plaster
    Intellichlor Salt Generator
    Water Fall

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    Join Date
    Mar 2012
    Location
    Tampa Bay, Florida
    Posts
    164

    Re: pump capacitor

    IRRC if a substitute is required you are supposed to only go up one size. It may or may not work. The risk is you could burn out the motor starter winding (which means a new motor).
    John (DIYer). Concrete, approximately 13,000 gallon in-ground pool with adjoining concrete spa. Approximately 40 years old. Hayward Super II pump for pool and legacy Anthony Sta-Rite bronze pump CF6 for spa, VA-26 filter,(2 sets), Rheem propane heater for spa. HASA Liquidator for pool.

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