A.O. Smith 3/4 HP Square Flange 56Y Dual Speed Full Rate Motor - B2981

$291.99

IN STOCK
FREE SHIPPING

Part # B981

By Century Motors

  5 Average  

Details

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Part # B981

Warranty 1 Year

Manufacturer Code B2981

Alternate Part #'s 12070, 165982, 177066, 177132, 177143, 190165, 190180, 193936, 1D186, 35-5375, 5KCR48PN2112X, 5U162, 8-177143-03, 8-190165-01, A100DSHL-Y, B960, B981, C1450, EB981, SQL1072R, SQL75FL2

Product Description

A.O. Smith Centurion replacement motor for Pentair WhisperFlo, full rated, dual speed pumps. Specifications: HP = 3/4, RPM = 3600/1800, Voltage = 115, Amps = 12.4/2.2 amp, Service Factor = 1.67, Frame = 56Y, Shaft = Threaded.

NOTE THIS MOTOR IS SHIPPED LESS HI-LO SWITCH. YOU MAY PURCHASE THE HI-LO SWITCH SEPARATELY BY ORDERING PART # 2512558-001.

Motor Dimensions Motor Dimensions
Motor Image Motor Image

Product Specifications

Motor Name:
0.75 HP B981 & B2981 Replacement Pool Motor
HP:
75/ .10 HP
Speed:
Dual
RPM:
3450/1725 RPM
Volts:
115 V
Amps:
12.4/2.2 amp
Service Factor:
1.67
Total HP:
1.25 HP
Frame:
56Y
Stock #:
B981 or B2981
Shaft:
Threaded
Overload Protector:
Auto
Dimension Letter:
C
Dimensions:
13.1 in.
Commonly Used On:
Pentair WhisperFlo
Flange:
Square
Timer:
No Timer
Notes:
California Title 20 Compliant
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?     Asked on 8/3/2018 by Minhaj

Hi! The part number you gave me for the “v” stationary start switch is for a single speed motor. The motor i have is b981 which is a 2 speed. Are they the same? Thank you.
 Reply

A  Answered on 8/4/2018 by InyoPools Product Specialist Lennox H.

Hi, Minhaj. This B2981 Dual Speed Motor uses a Single Speed Stationary Switch - 629002-001
 Reply


?     Asked on 8/3/2018 by Minhaj

Hi what is the part number for the “v” stationary start switch for the motor b2981/b981. Do you carry it? Thank you.
 Reply

A  Answered on 8/3/2018 by InyoPools Product Specialist Hector F.

The part number for the stationary switch for your model motor is 5270-64 and we do have them in stock ready to ship. 
 Reply


?     Asked on 7/30/2017 by Snider

Hi! What would be toggle switch for this B2981 motor? It has a canopy back. 17590450 toggle switch wont work on this one. Thank you.
 Reply

A  Answered on 7/30/2017 by InyoPools Product Specialist Alex V.

Snider, If your motor has a canopy, you would need the 2512558-001
 Reply


?     Asked on 7/21/2017 by snider

is the toggle switch already installed in this one?
 Reply

A  Answered on 7/22/2017 by InyoPools Product Specialist Lennox H.

Hi, Snider. The Toggle Switch - 17590450 is not included with this motor. 
 Reply


?     Asked on 12/3/2016 by anthony

is this motor the one I would use to replace a Pentair superflo 2 speed motor? .75hp/.10 1.25/.17 sfp pump model SF-N2-3/4A- Part number 341111, 115v Thanks.
 Reply

A  Answered on 12/5/2016 by InyoPools Product Specialist Adam Y.

Good morning Anthony, Yes the 3/4 HP Dual Spd. Motor - Full Rate (B2981, B981) would be a good replacement .I would also recommend changing the Shaft seal and seal plate o-ring. You can find those here.Pentair Superflo Parts
 Reply


?     Asked on 9/26/2014 by Guest

What is the approximate energy/cost savings between a one and two speed motor?
 Reply

A  Answered on 9/26/2014 by InyoPools Product Specialist Patrick P.

Having a 2-speed pump should cut your energy consumption in half.
 Reply


?     Asked on 2/16/2012 by Guest

I just finished replacing the shaft seal on my booster pump. As soon as I turned the pump on water was leaking from the shaft seal. Is it defective or am I doing something wrong?
 Reply

A  Answered on 2/16/2012 by InyoPools Product Specialist Patrick P.

Depending on the model, the installation of a booster pump shaft seal can be slightly different than a pool pump shaft seal. Some booster pump and pool pump shaft seals require that a silicone sealant be used on the outer areas of the metal seat of the shaft seal. The seal will need to be lightly hammered into the body of the pump. You can use a 1 inch PVC coupling or a piece of 1 1/4 inch PVC pipe and a rubber mallet. This procedure will apply to any pool pump or booster pump using a >PS-1000 style shaft seal.
 Reply


?     Asked on 1/19/2012 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?
 Reply

A  Answered on 1/19/2012 by InyoPools 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.
 Reply


?     Asked on 1/18/2012 by Guest

How can I tell whether or not my motor is a dual or single speed?
 Reply

A  Answered on 1/18/2012 by InyoPools Product Specialist Patrick P.

Most dual speed motors will have a toggle switch that will allow you to adjust the motor speed to either high or low. Another way to tell if your motor is dual speed is by looking at the RPM's on the motor specifications label. If there are two RPM's listed such as: 1725/3450 then motor is dual speed. If there is only one RPM, then motor is single speed.
 Reply


?     Asked on 1/18/2012 by Guest

Can you direct me to the proper hi low switch for this motor?
 Reply

A  Answered on 1/18/2012 by InyoPools Product Specialist Patrick P.

Unfortunately the manufacturer does not offer the switch for the 2 speed 220v motors any longer. If you already have a 220 volt timer (on/off) you would need an Intermatic T106R to switch from high to low speed. If you do not have a timer currently you would need the T10604R which is a 220v on/off timer and a high/low timer.
 Reply


?     Asked on 1/12/2012 by Guest

Why should I purchase a Tune Up Kit?
 Reply

A  Answered on 1/12/2012 by InyoPools Product Specialist Patrick P.

A Tune Up Kit includes all of the essential replacement seals and gaskets for the pump. The seals and gaskets should be replaced when installing a new motor on your pump. New seals will prevent the pump from leaking water or losing the prime. A Tune Up Kit will protect your motor and ensure that the pump is working efficiently.
 Reply


?     Asked on 1/12/2012 by Guest

Why do I need to purchase a new shaft seal?
 Reply

A  Answered on 1/12/2012 by InyoPools Product Specialist Patrick P.

We strongly recommend replacing the shaft seal. The purpose of a shaft seal is to prevent water from running down the shaft of the motor and into the motor housing. Water will damage the bearings and cause the motor to fail. A new shaft seal should be installed whenever a motor is replaced. The motor manufacturer can deny the warranty if the motor fails to due to water damage from a faulty shaft seal. To find your shaft seal you will need to visit our Pool Pump Parts Page or the Spa Pump Parts Page and select your make and model.
 Reply


?     Asked on 1/11/2012 by Guest

What is Service Factor?
 Reply

A  Answered on 1/11/2012 by InyoPools Product Specialist Patrick P.

Service Factor(SF) is a multiplier that when multiplied by the horsepower of the motor indicates the total permissible horsepower loading that may be carried when the motor is operating at rated voltage and frequency. The most important thing to remember when replacing a motor is that the replacement motor's horsepower times its service factor must be equal to or greater than the original motor's horsepower times its service factor. The Service Factor rating can be found on the motor label. See Step 4 of our How to Read a Pool Motor Label guide.
 Reply


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