Part # B845
Warranty 1 Year
Manufacturer Code B2845
Dimensions 13" L x 9" W x 6.5" D
Alternate Part #'s 11357, 1203155404, 165267, 177384, 193991, 1K051, 5KCR38PN6146X, 5U158, 816526707, AE100CH, AE100CHL, AE100DLL, B845, B862, B862SE, C1446, EB845, K48J2P100, K48J2P101, K48J2P101A1, K48J2PA101, K48J2PA101A1, K48J2PA105, K48J2PA105A1, K48J2PU100, QC1052, SQ205E, SQ207UE, SQD50FL1E, 35-126-1220, CRMB845
Century Centurion replacement motors for Pentair WhisperFlo, energy efficient, full rated pumps. Specifications: HP = 1/2, RPM = 3450, Voltage = 115/208-230, Amps = 8.8/4.4-4.5, Service Factor = 1.90, Frame = 56Y, Shaft = Threaded.
Note: NOT California Title 20 Compliant.
California Title 20 Compliant Options:
Variable Speed - EVQ165
What is Service Factor?
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.
Why do I need to purchase a new shaft seal?
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.
Why should I purchase a Tune Up Kit?
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.
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?
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.
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?
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.
Less than 1 hr
(5 out of 5 stars) Pool Filter Motor
Reviewed By: DreamBigGoGreen from Bowie, Maryland ()
Pros: Customer service, shipping time, price and product
Cons: None that I can think of
Best of all is the wonderful customer service help provided by Inyopools. The product was here in the time specified and the price was considerably less than the 5 other companies I checked with first. The product was as specified and ordered and hasn't given me any problems to date. It was installed about a month ago.
(5 out of 5 stars) Why pay more for the same or less
Reviewed By: Jerry M. from bonita springs, FL ()
Pros: NEW AOSMITH motor who provides the original to Pentair..
Cons: No downside that I see
In the past, we would haul our pumps to a place the rebuilt them for 3/4 of new price. Now we buy the motors and pump rebuild kits and have a NEW motor, which is usually the problem, and buy the repair kit with all of the seals and we have a new pump... Great deal for about 1/2 the price including our labor.
(5 out of 5 stars) The replacement motor you want
Reviewed By: Jimbob from Raleigh, NC ()
Pros: Easy to install
I installed this motor on a five year old Pentair pump with failing bearings. It took me under an hour and I had never done it before. It's working great and is quieter than the pump was when it was new. You should replace the seal and use the kit they sell at INYO and you can replace some gaskets at the same time.