Marathon Electric 1 H.P. Round Flange Motor

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MANUFACTURERMarathon Electric

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resources:   Q&A: Ask a Question  | Q&A: View Answers (5) | Documents (2)

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DIMENSIONS14" L x 6.5" W x 6.5" D

ALTERNATE PART #'S5KC39PN2822BX, 5KC39PN2822X, B228SE, UST1102

Product Description

1 HP Up-Rate Motor, 1.0 S.F., Voltage 115/230, Max Amps 115V = 15.0 230V = 7.5, Single Speed, RPM = 3450, Frame = 56J

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Asked on 02/10/2016 by james bowen

What can I replace it with?

Inyo Answer

Answered on 02/10/2016 by Product Specialist Megan C.

The replacement motor for the C1318 Marathon Electric 1 H.P. Round Flange Motor. Is the A.O. Smith 1 HP Round Flange Up Rate Motor PART# UST1102 click here to view. Remember to replace the Shaft Seal every time you replace the motor. If you need more assistance with the shaft seal as they are specific to the Pump Model. Please send us an email under our Contact and Support Icon.


Asked on 06/07/2015 by Ed4Jackie

I've a Marathon Electric 1 HP Motor C1318 installed in a 10,000-gallon pool with Hayward C-750 filter. The filter needs replacing due to corrosion and rust. I may replace the C-750 with a C-500, except if I understand correctly I should reduce the motor to 3/4 HP, right? What are advantages/disadvantages of reducing the HP? What parts would I need? Better to replace the filter with a C-750? I'm concerned that the same corrosion and rust may have also affected the pump but it seems to run OK

Inyo Answer

Answered on 06/07/2015 by Product Specialist Patrick P.

Hi Ed, If you reduced your filter down to a C-500 you would need to reduce the HP of your pump so the small filter could handle the output of your pump. The advantages to reducing your HP is that your cost of operation will be less as the 3/4 HP pump costs less to operate than a 1 HP pump. The disadvantage of reducing the HP is that you will need to also replace your impeller to 3/4 HP so there would be this additional expense. I would suggest replacing your filter with a Hayward C7512 Star Clear Plus Filter and reducing your pump motor to 3/4 HP.


Asked on 03/01/2015 by Glen Powers

Do you have a replacement for this motor?

Inyo Answer

Answered on 03/02/2015 by Product Specialist Robert M.

The replacement for the Marathon C1318 is Century model UST1102.


Asked on 01/19/2012 by Guest

I'm trying to replace the motor on my pool pump but all these numbers and abbreviations on the motor label are really confusing me. What do they mean?

Inyo Answer

Answered on 01/19/2012 by Product Specialist Patrick P.

Replacing a pool pump motor is not as difficult as it seems. You can try looking here. If you need help figuring out what the information on your label means. If you are still having difficulty figuring it out you can call us at our toll free number or you can send us a photo of your motor label here.


Asked on 01/18/2012 by Guest

I'm looking to replace my G.E motor. My model is a C1318. Your description matches but you say this is a Marathon motor. Is this right?

Inyo Answer

Answered on 01/18/2012 by Product Specialist Patrick P.

G.E. and Marathon are one in the same. G.E was purchased by Regal Beloit and is now under the Marathon name. The quality of the motor has not changed.

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