Variable speed conversion

Jim Savage

Active member
Jul 5, 2020
34
West Gardiner, ME
Hey folks! My 30k gallon inground is currently running a Superpump 120v 1hp. It's eating about $100 a month during pool season. I'd like to switch this to a VS motor but I'm struggling to find one that isn't 240v. Now, I'm not 100% positive but I might have 240v going to the pump pad... the breaker looks like a 240v breaker. I've yet to look closely or meter the wiring. What I am sure of is that the current motor is wired to 120v.

Any suggestions about a replacement motor? I known120v VS motors are a bit rarer, but I think that makes for the simplest swap.
 

cowboycasey

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Jul 3, 2013
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Fletcher, OK

Jim Savage

Active member
Jul 5, 2020
34
West Gardiner, ME
I appreciate the response. I was mainly looking for options on motors and keeping the superpump head. It's in great shape and all plumbed. I'll certainly be doing some investigating into what I have for voltage. It's a weird wiring setup. Looks like a 240 breaker. The wiring is baby blue and white. I'll need to pull out the meter and my thinking cap to figure out exactly what's going on in there.
 

mas985

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May 3, 2007
13,777
Pleasanton, CA
I appreciate the response. I was mainly looking for options on motors and keeping the superpump head. It's in great shape and all plumbed. I'll certainly be doing some investigating into what I have for voltage. It's a weird wiring setup. Looks like a 240 breaker. The wiring is baby blue and white. I'll need to pull out the meter and my thinking cap to figure out exactly what's going on in there.
If each wire is going to a separate breaker of the tandem breaker, it is 240v. If one of the wires is going to the neutral bar, it is 120v. It would be odd to use a white wire for 240v but not unheard of. Sometimes the ends will be tapped or colored to indicate a hot wire.
 

mas985

TFP Expert
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May 3, 2007
13,777
Pleasanton, CA
The only after market VS motors that I am aware of are 240v.



However, for pretty much the same price, you can get a new pump:


But it too is 240v.

If you want 120v, you may need to go with a new pump.
 
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cowboycasey

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Fletcher, OK
So the V green is 400 and if you buy the external part to adjust times from the pool and move the freeze temp it is almost 200 so the same price as the new pump...

I love my V green and would recommend it every time and it would be better to have your pump run at 240v instead of 120... With that said it is up to you the way you want to go :)
 

Jim Savage

Active member
Jul 5, 2020
34
West Gardiner, ME
You mentioned might having a 240 breaker. Can you post a picture of the breaker box?
I'll see if I can get to it. It's kind of buried behind a wall of garage stuff. I'm pretty savvy with residential electricity... used to build houses for a living. It's definitely a big bar breaker occupying 2 positions in the box. I just hate to state it to be 240 until I both verify that it actually shuts off power to the pad and that it is what it looks like.

I think my uncertainty revolves around how they turned the 240 into 120 at the pad and how I'd have to go about undoing it. Again, I didn't dig deep into the wiring but the wire colors are not what I would have expected. There's also a gfci box, an outlet, a timer, and a light box. The light is a separate circuit. More to come when I can get some pics and more info.
 

JamesW

TFP Expert
Mar 2, 2011
21,145
Here is a variable speed motor that is 115 volts. The total hp is 0.85 or 1.0. Not sure of the exact number.

The page shows that it can replace a 1.0 total hp motor but the specs say 0.85 total hp.

You could drop the impeller down to a SPX2605C to be safe. Or, contact the manufacturer to verify the total hp.


https://www.regalbeloit.com/product...-1-phase-3600-rpm-115-v-56j-frame-tefc-elv08c
 
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JamesW

TFP Expert
Mar 2, 2011
21,145


If you get the NPTT165, it's a 1.65 total hp motor. You can use a SPX2610C impeller and that will give you better performance or you can use the existing impeller and the NPTT125 motor.

Note that the frame type looks like it's mislabeled in the brochure. The SuperPump uses the 56j frame. It's right in the title but not in the description.

 
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