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Thread: Help: Pentair Superflo 1.5HP Siezed

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    Help: Pentair Superflo 1.5HP Siezed

    Pump model: Pentair 1.5HP Superflo
    Model Number (on volute sticker): 340039

    I came home a couple days ago and the pool looked a little low so I went to check the pump when I turned it on it just hummed and would not pump water. I'm pretty sure that the inlets go clogged with leaves and the pump ran dry part of the day. So I think the seal is gone and will need to be replaced. I have it apart and I'm working to get the impeller off right now. If anyone has any advice for me I would appreciate it. The impeller locking screw is proving to be difficult. Is it a reverse threaded screw?

    Thanks,

    RTS
    I got nothing right now

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    Re: Help: Pentair Superflo 1.5HP Siezed

    Update: I spun the impeller and it does not appear to be seized. When I apply power to the pump motor it makes either a loud or soft humming sound and will not spin the impeller.
    I got nothing right now

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    Re: Help: Pentair Superflo 1.5HP Siezed

    Update: If I apply power and spin the impeller the motor will start spinning.
    I got nothing right now

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    Re: Help: Pentair Superflo 1.5HP Siezed

    Quote Originally Posted by JookyDFW
    Update: If I apply power and spin the impeller the motor will start spinning.
    Change the motor start capacitor.
    In the industry, CSP (Certified Service Professional) by the NSPI and it's successor the APSP. My company services over 600 pools every year. I think the practices regularly espoused on this forum (especially the BBB method) are outstanding; however my comments will be often oriented towards the goal of getting it done, and getting it done right now!

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    Re: Help: Pentair Superflo 1.5HP Siezed

    Quote Originally Posted by Qwaxalot
    Quote Originally Posted by JookyDFW
    Update: If I apply power and spin the impeller the motor will start spinning.
    Change the motor start capacitor.
    Thanks for the quick reply. Looks like you got the right issue. I found a 25uf (or 27UF) capacitor from an old 1HP pump motor, hooked it up, and the pump started up. I'm going to try and find the correct replacement because this other capacitor does not fit inside the housing. Will it hurt to use the capacitor with the lower UF rating (mine was 30UF) for a week until the new part arrives or would it be better to source one locally and get it switched out immediately.
    I got nothing right now

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    In the Industry
    Qwaxalot's Avatar
    Join Date
    Jun 2012
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    439

    Re: Help: Pentair Superflo 1.5HP Siezed

    Quote Originally Posted by JookyDFW
    Quote Originally Posted by Qwaxalot
    Quote Originally Posted by JookyDFW
    Update: If I apply power and spin the impeller the motor will start spinning.
    Change the motor start capacitor.
    Thanks for the quick reply. Looks like you got the right issue. I found a 25uf (or 27UF) capacitor from an old 1HP pump motor, hooked it up, and the pump started up. I'm going to try and find the correct replacement because this other capacitor does not fit inside the housing. Will it hurt to use the capacitor with the lower UF rating (mine was 30UF) for a week until the new part arrives or would it be better to source one locally and get it switched out immediately.
    It probably won't hurt, but your motor will be drawing slightly more current at start up.
    In the industry, CSP (Certified Service Professional) by the NSPI and it's successor the APSP. My company services over 600 pools every year. I think the practices regularly espoused on this forum (especially the BBB method) are outstanding; however my comments will be often oriented towards the goal of getting it done, and getting it done right now!

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