Trying to determine what HP motor this is.

Alwayshad1

Well-known member
Oct 11, 2020
92
North central Florida
Good morning. So yesterday the motor went out on my spa pump. Just a loud grinding noise no priming, etc. I went up to my local pool supply store and going by the pictures I took of the metal plate attached to the pump, he said it was a 1 HP motor. The actual labels on the motor itself are long worn off but the house was built in 1989 so I’m sure it had been replaced at some time since then. We bought he house in 2020. This motor/pump/filter operates the spa. There is a separate motor/pump/filter that operates the pool. I also have a heater that can operate either pool or spa independently of one another by switching valves. The spa if I had to guess is about 400 gallons and has 4 returns and several holes in the seats where air is pushed thru via a blower located nearby. The guy wanted $600 to do the job. I remember years ago I changed out a similar motor (when I was younger!) and didn’t find it too difficult. I can get a new 1 hp motor for about $250 if I can do it myself. My question are from what I see online, the Starite pump that I have is a A5F 125L and that it fits several different size motors. If that is so, how does he know it is 1 hp that I have? Also, when we bought the house it had one of those newer style pump/motors with the variable digital stuff on it that operated the pool which I don’t think were even available back when the house was built so I don’t know if that Stariite pump originally did both spa and pool or not. We had to have it replaced two years ago when it burned up. Right before that we had the pool remodeled and added a pool heater and the guy reworked all the external pvc piping and valves to accommodate the configuration. Anyhow..in a nutshell should a 1 hp motor work with this pump and do you think it will be sufficient to do what’s needed for that spa. Thanks and apologize for the long post.
 

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Century (A.O. Smith) 1.5 HP Up Rate Motor, Square Flange 48Y Frame, Single Speed - Model USQ1152​


ALTERNATE PART #'S 1103016463, 13773, 186360, 187333, 3K033, 4205007400, 54004, 5KC38SN2535DX, 5KC39SN2074, 5KC39UN6086X, 90106931,
A100FLL,
B693, B854, B854SE, B854SM, C1246, C48AB46A01, C48AB46A79, C48L2EB103, C48L2EC11C3, C48L2EC15, C48L2EM15, C48L2P103, C48L2PA103A1, C48L2PA103A3, C48L2PA104, C48L2PA104A3, C48L2PA105, C48L2PA105A1, C48L2PA105A2, C48L2PA105A7, C48L2PA105C5, C48L2PM100, C55CXKLT-5007, EB854, J218-824A, SPX2710Z1M, SQD15UP1, USQ1152, V54004, AOSUSQ1152, CRMUSQ1152

Century USQ1152 Details

Voltage 115/230, Max Amps 115V = 19.2 230V = 9.6, Single Speed, Square Flange, RPM = 3450, Threaded Shaft, Frame = 48Y Used on the following models: Sta-Rite Max-E-Glas, Max-E-Glas II, Dura-Glas, Dura-Glas II, Dyna-Glas, Dyna-Max Pentair Whisperflow, Pinnacle and Anthony AR2 Series.

Product Specifications​

HP:
1.5 HP
Frame:
48Y
Volts:
115/230 V
Speed:
Single
Amps:
19.2/9.6 amp
Service Factor:
1.1
Total HP:
1.65 HP
Manufacturer:
Century (A.O. Smith)
Shaft:
Threaded
Flange:
Square
RPM:
3450 RPM
Stock #:
USQ1152
Phase:
Single
 

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Thank you so much. So does that mean a 1 hp motor would work with that pump or does it need to be a 1 1/2hp pump? Being that it is now only running a small spa do you think a 1 hp is sufficient? And lastly, so the pool guy was going to sell me a 1 hp which is what he said that label called for even though that chart says 1 1/2? Thank you.
 
View attachment 586042


Century (A.O. Smith) 1.5 HP Up Rate Motor, Square Flange 48Y Frame, Single Speed - Model USQ1152​


ALTERNATE PART #'S 1103016463, 13773, 186360, 187333, 3K033, 4205007400, 54004, 5KC38SN2535DX, 5KC39SN2074, 5KC39UN6086X, 90106931,
A100FLL,
B693, B854, B854SE, B854SM, C1246, C48AB46A01, C48AB46A79, C48L2EB103, C48L2EC11C3, C48L2EC15, C48L2EM15, C48L2P103, C48L2PA103A1, C48L2PA103A3, C48L2PA104, C48L2PA104A3, C48L2PA105, C48L2PA105A1, C48L2PA105A2, C48L2PA105A7, C48L2PA105C5, C48L2PM100, C55CXKLT-5007, EB854, J218-824A, SPX2710Z1M, SQD15UP1, USQ1152, V54004, AOSUSQ1152, CRMUSQ1152

Century USQ1152 Details

Voltage 115/230, Max Amps 115V = 19.2 230V = 9.6, Single Speed, Square Flange, RPM = 3450, Threaded Shaft, Frame = 48Y Used on the following models: Sta-Rite Max-E-Glas, Max-E-Glas II, Dura-Glas, Dura-Glas II, Dyna-Glas, Dyna-Max Pentair Whisperflow, Pinnacle and Anthony AR2 Series.

Product Specifications​

HP:
1.5 HP
Frame:
48Y
Volts:
115/230 V
Speed:
Single
Amps:
19.2/9.6 amp
Service Factor:
1.1
Total HP:
1.65 HP
Manufacturer:
Century (A.O. Smith)
Shaft:
Threaded
Flange:
Square
RPM:
3450 RPM
Stock #:
USQ1152
Phase:
Single
Okay thank you I know which one to get now, appreciate all your help.
 
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Amazon can be tricky with all of the cheap Chinese junk that they sell.

Century is a good motor.

Orceed is a Chinese cheap generic.



View attachment 586068

View attachment 586069
Aaahhh...thank you for pointing that out. So in this case if I went with the 1 hp motor that is made by Century with 1.65 service factor that would be the correct one for that pump I have even though it says it is for 1.5 hp motor...the service factor is basically the true hp?
 
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As long as the total hp is 1.65, the motor should be fine.

 

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