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Thread: Pump timer/breaker hums

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    sam03v's Avatar
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    Pump timer/breaker hums

    Hello,

    This morning I discovered my 1 hp single speed pump is not turning on, it was working yesterday so the pool is not green yet. I have a Intermatic timer and if I try to manually turn on the pump by flipping the timer to "on" the timer will humm and then pop the breaker. The house breaker box is on the other side of the wall in the garage, basically right across from the timer so i can't tell if the it's the breaker humming or the timer. The timer motor is only one year old and is working (i can see the gears moving). I can also move the pump impeller with my hand so the motor is not locked up. But, it does get warm when the timer/breaker is "on" and humming. So is it safe to assume the motor has a problem and not the timer or breaker?

    I actually have a new 2 speed motor on it's way and it should be here by Friday, so I was planning on replacing the motor anyway. But I'm worried I'll end up with a green pool before the motor arrives. Any suggestions to get this motor back running would be appreciated.

    Thanks in advance,
    24000 gallon, 18' x 36' IG with deep end, vinyl, built 1986, new liner 2012,
    3/4 hp uprated 2 spd on hayward super pump
    1.5" dia lines, sand filter, polaris 360
    TF-100 test kit

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    Mod Squad Bama Rambler's Avatar
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    Re: Pump timer/breaker hums

    It's most likely the capacitor in the motor.

    In order to keep it from turning green until the new motor gets there you could add chlorine and brush it really well to stir it up.
    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
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    sam03v's Avatar
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    Re: Pump timer/breaker hums

    Quote Originally Posted by Bama Rambler View Post
    It's most likely the capacitor in the motor.

    In order to keep it from turning green until the new motor gets there you could add chlorine and brush it really well to stir it up.
    Ok. Thanks.

    I added liquid chlorine this morning and stirred it with the pool brush as i went along the perimeter. I'll brush it a couple times a day until the motor arrives, hopefully I don't have problems with the new motor!
    24000 gallon, 18' x 36' IG with deep end, vinyl, built 1986, new liner 2012,
    3/4 hp uprated 2 spd on hayward super pump
    1.5" dia lines, sand filter, polaris 360
    TF-100 test kit

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    Re: Pump timer/breaker hums

    If it is the capacitor you may not need to replace the whole motor, just the capacitor. If there's a hump on top of the motor, that's where the capacitor is. Other motors have the capacitor inside the back plate. You should be able to swap out the capacitor for less than $40 if you do it yourself. Plus it would likely be an easier repair than swapping out the motor as you don't have to disconnect plumbing or motor.

    Plenty of videos on youtube detailing how to do it for the superpump...good luck.
    30,000 Gallon Inground, Vinyl Liner
    DE Filter & Pentair IC40 SWG
    Pentair Legend Platinum w/ PB4 Booster
    Pentair Kreepy Krawler Prowler Robot

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    sam03v's Avatar
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    Re: Pump timer/breaker hums

    Quote Originally Posted by jobondur View Post
    If it is the capacitor you may not need to replace the whole motor, just the capacitor. If there's a hump on top of the motor, that's where the capacitor is. Other motors have the capacitor inside the back plate. You should be able to swap out the capacitor for less than $40 if you do it yourself. Plus it would likely be an easier repair than swapping out the motor as you don't have to disconnect plumbing or motor.

    Plenty of videos on youtube detailing how to do it for the superpump...good luck.
    Thanks for the reply. I was planning on replacing the motor anyway, it's just a coincidence that the motor gave up the ghost a couple days before the new one will arrive. The motor has the capacitor on the back, I'm going to take a look at the capacitor tonight. Maybe I'll get lucky and the connections are corroded or something.
    24000 gallon, 18' x 36' IG with deep end, vinyl, built 1986, new liner 2012,
    3/4 hp uprated 2 spd on hayward super pump
    1.5" dia lines, sand filter, polaris 360
    TF-100 test kit

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    Re: Pump timer/breaker hums

    You might want to fix the old motor and keep it as a backup. If you can find the capacitor locally, you can swap it out before you get your new motor and test it out before you take it loose from the pump. That way you'll know you have a solid backup motor if something goes wrong with the new one down the road.

    Check out A/C supply shops or the pool store for a replacement if you want to go local. Take the capacitor with you and make sure the specs are the same and the physical dimensions are similar.
    30,000 Gallon Inground, Vinyl Liner
    DE Filter & Pentair IC40 SWG
    Pentair Legend Platinum w/ PB4 Booster
    Pentair Kreepy Krawler Prowler Robot

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    sam03v's Avatar
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    Re: Pump timer/breaker hums

    Quote Originally Posted by jobondur View Post
    You might want to fix the old motor and keep it as a backup. If you can find the capacitor locally, you can swap it out before you get your new motor and test it out before you take it loose from the pump. That way you'll know you have a solid backup motor if something goes wrong with the new one down the road.

    Check out A/C supply shops or the pool store for a replacement if you want to go local. Take the capacitor with you and make sure the specs are the same and the physical dimensions are similar.
    I was thinking I didn't want to spend any money on the old pump motor, but if things do go wrong with the new installation having a back up will be good. The pool store near my house has one model capacitor in stock, but I don't know if its' the one i need.

    Thanks!
    24000 gallon, 18' x 36' IG with deep end, vinyl, built 1986, new liner 2012,
    3/4 hp uprated 2 spd on hayward super pump
    1.5" dia lines, sand filter, polaris 360
    TF-100 test kit

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    sam03v's Avatar
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    Cool Re: Pump timer/breaker hums

    I picked up a capacitor at grainger (only one in stock at my local store) after searching on this forum for a part number. Since it was only $5.00 I thought I'd take a chance and buy it before removing the old one. Took 10 minutes to remove and replace and the motor is back in business! The pool still looks good as well.

    Thanks very much for the help!
    24000 gallon, 18' x 36' IG with deep end, vinyl, built 1986, new liner 2012,
    3/4 hp uprated 2 spd on hayward super pump
    1.5" dia lines, sand filter, polaris 360
    TF-100 test kit

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    Re: Pump timer/breaker hums

    Quote Originally Posted by sam03v View Post
    I picked up a capacitor at grainger (only one in stock at my local store) after searching on this forum for a part number. Since it was only $5.00 I thought I'd take a chance and buy it before removing the old one. Took 10 minutes to remove and replace and the motor is back in business! The pool still looks good as well.

    Thanks very much for the help!
    Glad it worked out for you. You should post the part number on here for people that may have this same issue in the future...
    30,000 Gallon Inground, Vinyl Liner
    DE Filter & Pentair IC40 SWG
    Pentair Legend Platinum w/ PB4 Booster
    Pentair Kreepy Krawler Prowler Robot

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    sam03v's Avatar
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    Re: Pump timer/breaker hums

    grainger part number: 2MDR4

    http://www.grainger.com/product/DAYT...rchQuery=2mdr4



    thanks again. My new motor should arrive today and if all goes well it'll be on tomorrow..
    24000 gallon, 18' x 36' IG with deep end, vinyl, built 1986, new liner 2012,
    3/4 hp uprated 2 spd on hayward super pump
    1.5" dia lines, sand filter, polaris 360
    TF-100 test kit

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