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Thread: Motor capacitor Suppliers

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    Motor capacitor Suppliers

    Am looking for a web link to supplier of 30MFD / 370AC motor capacitor for my Magnetek pool pump. I have in the past used York Capacitor but they have gone. this capacitor a start cap or run cap or both? Reason I ask is Grainger has a number of caps on their web site but are divided into start or run. I have motor running as I moved the cap from the spa pump, which is an identical part, over to the pool pump so no major urgency.

    Plaster In Ground, with Waterfall Spa. Raypak Heater, Nautilus DE Filter DNS48. Built about 2000.

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    Re: Motor capacitor Suppliers

    Where do you live? I have to go to the supply house later today and can check for you, if you wish.

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Motor capacitor Suppliers

    Mouser Electronics is one place you can find them. It doesn't matter if it's start or run, as long as it physically fits and the values are the same.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Join Date
    Oct 2007
    Valrico, FL

    Re: Motor capacitor Suppliers

    Another alternative is your local A/C and appliance parts house. They will probably have them in stock.
    7,500 gal, IG pool, L shape 22' x 15', 1.5 hp pump, cartridge filter, AquaPlus SWG/Controller, Pebble-Tec liner.

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    Re: Motor capacitor Suppliers

    Thanks Folks,
    I live in Houston. I've found out from Wiki something or other that they are 'run' capacitors as they are less than 75MFD.
    What I've also noticed is great price variations. The A/C supply shops have what I think will work for 15 USD, the pool places want 30 to 40 USD. I'll follow up on the links you gave me and thanks for the responses.

    Plaster In Ground, with Waterfall Spa. Raypak Heater, Nautilus DE Filter DNS48. Built about 2000.

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    Re: Motor capacitor Suppliers

    I found one on the Grainger web site, 26 dollars incl shipping.
    For folks that have not had one of these go bad the symptons I had are:
    1. Motor stopped, one circuit breaker tripped.
    2. Tell tale sign of oil running from the capacitor housing. In my case the housing is a dome shaped assembly that sits atop of the motor. The capacitor is inside the dome.
    They are very easy to change out. I make sure all breakers are off. In eight years I've had two go out, both on the pool pump. If you have a similar sized spa pump you can move the cap over to the pool pump to get up and running and fix the spa pump later on. Just make sure that the capacitor microfarad (MFD) rating, A/C voltage rating and physical size are the same. Don't forget to wrap insulation tape around the disconnected wires from the spa pump capacitor. I put an "X" of insulation tape over the spa pump switch as a reminder to family members to leave off.
    Plaster In Ground, with Waterfall Spa. Raypak Heater, Nautilus DE Filter DNS48. Built about 2000.

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    kevreh's Avatar
    Join Date
    Jun 2007
    Annandale, VA

    Re: Motor capacitor Suppliers

    Nice tips, thanks.
    16x32 Concrete IG 24k Gallons
    Equipment: Carvin 525sf Cartridge Filter, Jandy Gas Heater, Vortex Solar Panels w/solar valve, 1hp Hayward Pump with 3/4 HP AO Smith 2 Speed Replacement Motor, Aquarite Saltwater Cell, Polaris 280 Dolphin Active 20 Robot
    Automation: Hayward Prologic Controller

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    Join Date
    Feb 2008
    Dallas, TX

    Re: Motor capacitor Suppliers

    I will also recommend Grainger. I am fortunate enough to have one close to work. Run capacitors are normally an in-stock item for $15 or less.
    31000 Gal IG L-shape w/ spa, Riversand finish (PebbleSheen clone)
    Jandy 60 sq ft DE, 2.5 HP (uprated) Stealth pump, Polaris 280 w/ booster, Jandy PDA PS4 controller

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