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Thread: Which motor do I need?

  1. Back To Top    #1

    Join Date
    Mar 2015
    Clearwater, FL

    Which motor do I need?

    Hello Trouble Free Pools,

    I have a burned out Pentair Pinnacle 3/4 HP 1.27 SF pump with the following numbers on it:

    FR P56Y
    Type CX
    Form KJM

    The motor burned out in the last few weeks. It was making a lot of bearing noise last year and it finally gave up the ghost in the last week. So, instead of replacing the whole pump, I was just going to replace the motor. This is for a 12,000 gallon pool. Before I do, I have a few questions.

    #1 - Is there a 2-speed motor that I can drop onto this pump for more efficiency? I'd really like a 1/2HP continuous with a 1.5HP or 2HP option for running the cleaner with some sort of switch to decide between them.

    #2 - If there's no 2-speed motor option, what's the most efficient 1 speed motor I can drop into this pump without changing out the impeller? Would a 1/2 HP motor be sufficient? or would I need another 3/4 HP motor?

    #3 - When replacing the motor, is there anything else I need besides the motor itself? Looks like it's just four bolts. I imagine I would undo the 4 bolts and pull the motor straight back from the pump. Do I need to replace anything else before dropping the new motor in?

    I want to get this remedied today, if possible. Thanks for all the help!


  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Which motor do I need?

    Welcome to TFP.

    You most likely can get a 2-speed replacement, but it won't be dual voltage. If you'll tell us whether you're running it on 120 or 240 volts we'll be able to help find a 2-speed that will fit.

    If you are running it at 120 volts you need a B2981
    If it's 230 volts you need a B2980

    It would also be a good idea if you could post a pic of the data plate on the motor.
    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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