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Thread: Need a new motor, advice appreciated :-)

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    Need a new motor, advice appreciated :-)

    Hello!

    As the title states, the I'm in need of a new motor. Our pool is currently a swampy mess but I'm looking forward to correcting that soon. Long story short the pool has sat untouched for almost a year. I'll have to vacuum debris from the bottom but it's hard to tell as the pool is darn near black in color.

    The motor hums when turned on so I can only assume it has seized.

    Our pool is not large (14x32x4.5) so I feel the motor that it had was a bit oversized. The pump housing reads RS2000 and the motor is a US Motor K63CXERA-4768 2hp 1.2sf
    My returns are around 40ft from the pump.

    I was wanting to go with a 1hp motor to save on electricity. While I would love to get a 2 stage model, I don't have the funds for one of those at the moment.

    I know I will have to get a new impeller but I need to know if this motor would work for me:
    Amazon.com : Century Electric UST1102 1-Horsepower Up-Rated Round Flange Replacement Motor (Formerly A.O. Smith) : Swimming Pool Pump Parts : Patio, Lawn Garden

    I would be buying this motor, new impeller and seal kit. I would buy from our local pool supply store but they are asking 500$ for motor impeller and seal kit.

    Please let me know if I'm making a sound choice, if I'm not I am open to your suggestions. Next paycheck I'll order the pool test kit.

    Thanks for your time.

  2. Back To Top    #2
    mas985's Avatar
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    Re: Need a new motor, advice appreciated :-)

    The motor hums when turned on so I can only assume it has seized.
    Not always. That can also be a bad start capacitor which is very easy to replace.

    But yes, that pump is probably too large for your pool unless it is also used for spa jets. Is your old motor a 56J frame?

    A two speed would easily save you the extra cost in energy over a fairly short time.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Re: Need a new motor, advice appreciated :-)

    It is a 56j frame. I've removed the motor and the shaft won't rotate at all (by hand).

    image.jpg

  4. Back To Top    #4

    Re: Need a new motor, advice appreciated :-)

    While I am interested in a 2 speed pump, they seem to cost a lot more than the single speed motors. Also, the wireing I have has 3 wires. As I understand there has to be 4 wires plus an additional relay to make the motor work properly. I won't mind getting one if the price is reasonable. I'll have to study up on YouTube for that kind of installation.

  5. Back To Top    #5
    mas985's Avatar
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    Re: Need a new motor, advice appreciated :-)

    Yes, they can cost upwards of $200 more but even at only 4 hours per day of run time, it would save 165 kwh of energy per month. Even at $0.10/kwh, it would take only 12 months of operation to break even. Also, you can sometimes get a motor with a switch on the back so you don't need to change the wiring. But I prefer the automated switching.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  6. Back To Top    #6

    Re: Need a new motor, advice appreciated :-)

    I'll see if I can find a 2 speed 1hp motor with a built in switch. In the mean time, was the one I posted from amazon a direct fit for what I have?

    Thanks.

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    mas985's Avatar
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    Re: Need a new motor, advice appreciated :-)

    The 56J frame comes in two diameters. The smaller diameter has the bolt tab like the Amazon motor. But the larger diameter looks like one of these:



    Smaller diameter:
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Re: Need a new motor, advice appreciated :-)

    I think I have the the larger one. I suppose this means my amazon deal is no go. Let me research a bit more.image.jpg

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    mas985's Avatar
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    Re: Need a new motor, advice appreciated :-)

    Yes that is is the larger version. However, you can use the smaller motor but you will have to shim it.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  10. Back To Top    #10

    Re: Need a new motor, advice appreciated :-)

    Please excuse my ignorance, how would I go about shiming the motor? Are you referring to something like a spacer?

    On a side note, thank you for your help so far it is really appreciated

  11. Back To Top    #11
    mas985's Avatar
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    Re: Need a new motor, advice appreciated :-)

    You would shim between the motor and motor support on the bottom. See the diagram on this page:

    Hayward RS Series Parts - INYOPools.com


    I believe they make a part #16 that is the shim. Otherwise you need to shim above part #26.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  12. Back To Top    #12

    Re: Need a new motor, advice appreciated :-)

    Ok, in essence if I go with that motor I have to modify the motor bodies support base in order for it to be properly balanced/supported.

  13. Back To Top    #13
    mas985's Avatar
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    Re: Need a new motor, advice appreciated :-)

    Exactly
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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