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Thread: Pump Motor Blown

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    Pump Motor Blown

    My pool pump failed after a nasty storm came through a few days ago. The pump and motor went underwater and tripped the circuit breaker. When I turned the breaker on, the motor winding blew out. The pump is 10 years old according to the sticker on the side of it so I figure I should just replace the whole thing. The dead pump is a Jacuzzi Cygnet 1-HP 115/230v unit. The one I am thinking of replacing it with is this one. Cost is a pretty big concern right now as we have to replace the hardwood flooring downstairs due to the storm, so I can't get a really expensive pump/motor combo. Considering this one is under $300, I'm pretty happy considering that I expected to spend more than that.

    Is this a decent replacement pump? I'll be doing the install myself. My biggest concern is plumbing. I haven't done much with pvc pipe stuff and don't want to screw it up. I'm HOPING that I won't have to cut and replace anything, just that whatever new pump I get can just be set down in it's place and everything will line up. I probably won't be so lucky though. If not, then I suppose this would be a good time to install some unions.
    Austin, TX, 15,000 Gallon, Sand Filter, IG plaster, 8 Gallon Liquidator

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    Re: Pump Motor Blown

    Also, since my main pump isn't running I haven't been running my booster pump either. Is it OK to run the booster without the main pump or will it not get enough flow and possibly overheat? My pool is turning green and is in dire need of circulation and chlorine. I do know that the booster pump will drive the cleaner so I figure that might stir up enough water to mix the chlorine fairly well.
    Austin, TX, 15,000 Gallon, Sand Filter, IG plaster, 8 Gallon Liquidator

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    mas985's Avatar
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    Re: Pump Motor Blown

    You should run the main pump with a booster since they are in series. Otherwise, you will starve the booster and perhaps damage it.

    The Superpump is good cost effective pump but I would suggest getting the two speed version while you are at it so that you can save a bit on energy costs as well. The two speed shouldn't be that much more and you will make it up in energy savings
    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: Pump Motor Blown

    The dual speed is $570 as opposed to $290 for the single speed. I imagine it would take a long time to recover $300 in electricity costs
    Austin, TX, 15,000 Gallon, Sand Filter, IG plaster, 8 Gallon Liquidator

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    mas985's Avatar
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    Re: Pump Motor Blown

    The two speed can be had for about $425 if you shop around but your savings will depend on what you pay for electricity. Another option would be to put a two speed motor on your existing pump.
    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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    Join Date
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    Re: Pump Motor Blown

    Quote Originally Posted by mas985
    Another option would be to put a two speed motor on your existing pump.
    If you're handy, this could be a way for you to save money up front AND down the line. And if you need help with it, there's lots of us here ready and willing.

    BTW, you're not alone. Two of my pumps burned up about a week ago. One for the hot tub, and the pool pump. We had some of the same bad weather as you, guess it claimed another pump.
    John

    24' round Vogue AGP 12,000 gal. Flotec AT251001-01 1HP pump, Hayward S310T2 sand filter, Aquarite SWG T-15
    TF-100 (found at TF Test Kits) with Speedstir and Samplesizer

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    Re: Pump Motor Blown

    Quote Originally Posted by mas985
    The two speed can be had for about $425 if you shop around but your savings will depend on what you pay for electricity. Another option would be to put a two speed motor on your existing pump.
    My biggest concern about the pump (not the motor) is that it's old and the company that made it is no longer around. I would think that this means that I couldn't replace the impeller if it ever goes out, or are they somewhat universal? A local pool store has a single speed 1 HP motor for about $150, I was actually thinking of going that route. Also, why use a two speed pump instead of just a smaller pump? Don't you end up running it longer at a lower speed?

    Edit: I found this information. Looks pretty interesting. According to it, everyone should go variable speed instead of dual/single speed. Assuming I went with a variable speed pump, how would I determine the optimum settings?
    Austin, TX, 15,000 Gallon, Sand Filter, IG plaster, 8 Gallon Liquidator

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    mas985's Avatar
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    Re: Pump Motor Blown

    A variable is a great choice if you can afford it. Note that article is published by Pentair who is very interested in selling variable speed pumps so of course it will be somewhat biased. In most situations a variable speed pump will have a lower lifetime cost than a two speed but a two speed is still better then a single speed. It really comes down to how much you are willing to spend up front for cost savings down the road.

    As for settings, the Intelliflo reaches optimum energy performance around 800-1000 RPM but that may or may not work well for your pool. If skimming is not working well enough or you need to run a cleaner, higher speeds may be necessary. It is a bit of trial and error.
    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: Pump Motor Blown

    I went ahead and ordered the single speed pump. If we didn't have to shell out $4k for the living room floor to be replaced (it would be $1500 if wifey would let me put the tile down myself) in 3 weeks I probably would have swung for a more expensive pump. I just can't justify to myself spending the extra $170 right now on something that would take a year or two to recover costs.
    Austin, TX, 15,000 Gallon, Sand Filter, IG plaster, 8 Gallon Liquidator

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    Re: Pump Motor Blown

    Well I got my new pump in last night. Would have had it in a day before, but the plumbing had been done and redone to the point that there wasn't any fresh/bare PVC remaining to work with. There was a union at which I could disconnect the plumbing, but I couldn't find that particular style of union online or off anywhere, so it was pretty much worthless. Ultimately, I had to dig up the yard to find the PVC underground, cut it, and install a compression fitting on it with the water flowing out of it. I think I'm going to pick up a couple extra unions to match the one I used this time and keep them in my pool supply box.

    So now, my pressure is reading 18 PSI after backwashing. When I woke up this morning it was at approximately 30 PSI. Filter is rated for 50 PSI so I should be OK there. However, my old pump was at about 10 PSI. Is my new pressure too high?
    Austin, TX, 15,000 Gallon, Sand Filter, IG plaster, 8 Gallon Liquidator

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    Mod Squad Bama Rambler's Avatar
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    Re: Pump Motor Blown

    Your new pressure may be prefectly normal for your new pump. Or it could be that sitting without circulation for a few days allowed something to get started growing and your filter started picking it up as soon as it started running. Clean it a few times and see what the pressure settles to.
    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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    Re: Pump Motor Blown

    you can try this website to determine your optimal flow settings and to determine your payback period for a variable speed motor or a two-speed motor.

    www.emersonmotors.com/pool then select the energy calculator

    I believe this will help with your decision making
    24' Round A/G 14,500 gallons, Hayward HeatPro HPABG Deluxe 60K BTU heat pump, Hayward EC50AC DE filter w/1HP Matrix Pump

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    Re: Pump Motor Blown

    Quote Originally Posted by Bama Rambler
    Your new pressure may be prefectly normal for your new pump. Or it could be that sitting without circulation for a few days allowed something to get started growing and your filter started picking it up as soon as it started running. Clean it a few times and see what the pressure settles to.
    Backwashed 4 times so far, 18 PSI each time afterwards.
    Austin, TX, 15,000 Gallon, Sand Filter, IG plaster, 8 Gallon Liquidator

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