?     Asked on 1/11/2012by Guest

What is Service Factor?
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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.
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?     Asked on 1/25/2020by Brad Schroeder

I need to replace a common motor ao smith b855 2hp 56y, does it matter what pump the motor is driving,except for gaskets ,seal and o rings , and is there a universal gasket seal kit
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A  Answered on 1/29/2020 by InyoPools Product Specialist Joe S.

It would not matter for the pump as long as the specs match what is currently installed. For the seals and gaskets we would need the information off the pump housing in order to find that information. 
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?     Asked on 3/25/2020by Robert Conrad

I have a Century Centurion part # 7-177476-20 pump that I need to replace and I am trying to make sure that this pump is the proper replacement pump. Thank you
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A  Answered on 3/25/2020 by InyoPools Product Specialist Lennox H.

Hi, Robert. This B855 motor can be used as a replacement if you have 230 volts. 
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?     Asked on 1/7/2021by Curtis P. Goettel

Is this a replacement for my B855? I have a "0" at the beginning of 0-177897-22. The site shows "7" and "8" but no "0". All spec's look the same. Also, what is the "GO" kit number for this? Please see photos

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A  Answered on 1/8/2021 by InyoPools Product Specialist Hector F.

Hi Curtis, yes, this is the correct replacement motor for the motor included in your photo. You will also need a Pentair Whisperflo seal kit when you replace your motor. We put together this Video on How to Replace a Pool Pump Motor which you may find helpful when you tackle this project.
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?     Asked on 4/20/2021by Barry Barrington

HAVE MAGNETEK CENTURY CENTURION 2HP PUMP;CAT B843;PART 7-165201-07 SAME STATS AS YOUR PUMP;WILL YOUR PUMP BE REPLACEMENT FOR THIS MODEL
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A  Answered on 4/20/2021 by InyoPools Product Specialist Charlie R.

Hi Barry,Based on CAT# B843, you can view your replacement HERE. Don't forget to purchase a new seal, too!
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?     Asked on 5/8/2021by Inyo Visitor

Hi, I have to replace my pool motor. would you please recommend. The old one is Century Centurion AO Smith, CAT B124, Part B-159987 -05, Type CX, Frame X56C, HP 2.0, SF 1.20, HZ 60, RPM 3450. what would be the equivalent of this? Thank you, Tess
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A  Answered on 5/9/2021 by InyoPools Product Specialist Patrick P.

Hi, You will require this B124 Replacement Motor.
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?     Asked on 5/11/2021by Rich

Hi - Pump motor needs replaced. Current is: Century Centurion CAT: BPA451V1. Serial: 15218J2. Type: CX. Frame: 56Y. HP: 2.20. SF: 1.00. PH 1. HZ 60. RPM 3450. Volts 208-230. Amps SF 9.6-8.8. Time CONT. Encl DP. Form KJM. California installation. Please recommend an appropriate motor. Thanks!

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A  Answered on 5/11/2021 by InyoPools Product Specialist Patrick P.

Hi Rich, Thanks for the information and photos. For California, you will require this 2.7 HP Variable Speed Motor to take advantage of the higher HP range of this motor I would suggest also getting this 2.5 HP Whisperflo Impeller. When replacing your motor you will need this Whisperflo Seal Kit.
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?     Asked on 5/18/2021by Mike

Have to replace this motor. What is compatible?

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A  Answered on 5/18/2021 by InyoPools Product Specialist Danny R.

This is not the correct motor for your FHPM1.5.  The correct replacement motor for your pool pump is the... Century 1.5 HP Square Flange 56Y Up Rate Motor - B2854
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?     Asked on 5/24/2021by David N Fredrickson

What "Go Kit" gaskets do I need?

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A  Answered on 5/24/2021 by InyoPools Product Specialist Danny R.

The go-kits are based on the pump manufacturer and model.  The picture you provided has the motor manufacturer and model, but I need to know what pump this motor is going on.If you know the manufacturer and model number you can find the Gokit on this page...Go-Kits
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?     Asked on 6/4/2021by Paul Henderson

need to confirm correct replacement electric motor Century A.O. Smith B855 Square Flange 2 HP Y56Y (pic attached) What type of mechanical pump seal needed? Lead time? also need a lid for the Pump (pic attached) 770-789-2401 (cell)

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A  Answered on 6/4/2021 by InyoPools Product Specialist Craig C.

Hello Paul.  The Century Motors 2.0HP Square Flange Up Rate Motor model B2855 is the direct replacement for your current motor model B855. Century 2.0 HP Square Flange 56Y Up Rate Motor B855 is No Longer Available Replaced by B2855 The replacement Locking Ring, Lid, and O-ring for the Jandy HP Plus pool pump is part #R0448800.   Lock Ring, Lid, & O-ring - R0448800  The motor shaft seal is part #R0445500 for your pump serial number J06FK0175,  Pump Shaft Seal 3/4" - R0445500
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?     Asked on 7/28/2021by David

0-I need to find a replacement for a pool pump motor that I have. Current motor is a Centurion 2 HP, Model #193994XCN, Part #0-193994-06 Type CX Frame Y56Y 3450 RPM 208-230V This motor fits a Jandy Pro Series Stealth pump assembly Model #SHPM2.0 Please recommend a motor to replace. Thanks
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A  Answered on 7/29/2021 by InyoPools Product Specialist Craig C.

Hello David.  The Century Motors 1.5 HP Full Rate EE Motor model B2842 is the correct replacement motor for the Centurion motor model 0-193994-06.  The B2842 is a 1.5 HP Full Rate motor with a total horsepower (THP) of 2.21.  It is recommended that the motor shaft seal, backplate gasket, and diffuser o-ring be replaced at the same time.  Century 1.5 HP Square Flange 56Y Full Rate EE Motor - B2842   Jandy Pump Shaft Seal 5/8" - R0479400     Backplate O-Ring, Generic - R0446300 9-1/2" ID, 3/16" Cross Section O-521      Diffuser O-ring - R0622000
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?     Asked on 9/16/2021by Peter Rawlins

what is the difference between a B855, and a B2855 century motor. will either motor fit a Pentair 2 hp whisperflo and what shaft seal is needed
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A  Answered on 9/16/2021 by InyoPools Product Specialist Craig C.

Hello Peter.  The Century Motors 2.0 HP Up Rate Motor model B855 is No Longer Available and is automatically replaced by the Century Motors 2.0 HP Up Rate Motor model B2855.  The Century Motors model B2855 is compatible with the Pentair Whisperflo 2.0 HP Pool Pump.  It is recommended that the motor shaft seal, seal plate gasket, and diffuser o-ring be replaced concurrent with the new motor.  The GOKIT32 contains the necessary parts to complete this project.  Tune Up Kit Pentair/Purex Whisperflo - GOKIT32   The motor shaft seal is U. S. Seal Manufacturing PS-1000   Pump Shaft Seal 5/8" - PS-1000
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?     Asked on 9/16/2021by Suggested parts please

Good evening, I see the replacement for the b855 2 hp but please recommend other parts to fit FHPM 2.0 Flow pro so that I can have a proper replacement set.

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A  Answered on 9/17/2021 by InyoPools Product Specialist Craig C.

Hello.  It is recommended that the motor shaft seal, backplate gasket, and diffuser o-ring be replaced concurrent with the new motor.  Pump Seal, Extra Heavy Duty PS4280 (Saltwater Pools) - PS-4280   Diffuser & Impeller Hardware - R0480400  Attached please find an exploded parts diagram for the Jandy FloPro FHPM Series Pump for additional parts reference.  Jandy FloPro FHPM Series Pump
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?     Asked on 11/10/2021by Inyo Visitor

Is this Motor fit mine? (Picture attached)

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A  Answered on 11/10/2021 by InyoPools Product Specialist Rich N.

The better replacement for your 0-193994-06 motor is this Century 1.5 HP Square Flange 56Y Full Rate EE Motor - B2842.  Let us know what model pump this hooks up to so we can recommend a new motor shaft seal or tune-up kit to ensure a leak-free installation. 
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?     Asked on 2/3/2022by Cary Hilt

MagneTek Century Centurion part# 7-177452-03 replacement motor needed
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A  Answered on 2/3/2022 by InyoPools Product Specialist Craig C.

Hello Cary.  The Century Motors 2.0 HP Full Rate EE Motor model B2843 is the direct replacement for the Magnetek Century Centurion Motor model 7-177452-03.   Century 2.0 HP Square Flange 56Y Full Rate EE Motor - B2843
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?     Asked on 2/6/2022by Kami Yamaguchi

I have to replace pool motor pump which is a Centurion model B855, 2 HP, Y56Y, 230V that is attached to a Jandy Stealth. Can you help me with what I need to replace failing pump with as well as recommended associated rings, diffuser, prop, etc...

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A  Answered on 2/7/2022 by InyoPools Product Specialist Craig C.

Hello Kami.  The Century Motors 2.0 HP Up rate Motor model B2855 is the correct replacement for the Centurion Motor model B855.  B2855  It is recommended that the motor shaft seal Jandy Pump Shaft Seal   backplate o-ring  Backplate O-Ring  and diffuser o-ring   Diffuser O-ring    be replaced concurrent with the new motor.  Attached please find an exploded parts diagram for the Jandy Stealth SHPF & SHPM Series Pump for reference.  Jandy Stealth SHPF & SHPM Series Pump   
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?     Asked on 3/7/2022by JOHN BIES

Hello, What is the proper motor replacement for a Century Centurion 2.0 hp B855? Also the proper seal kits and capacitor for a Hayward pump.
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A  Answered on 3/8/2022 by InyoPools Product Specialist Craig C.

Hello John.  The Century Motors 2.0 HP Up Rate Motor model B2855 is the direct replacement for the Century Motors 2.0 HP Up Rate Motor model B855.  B2855    The U. S. Seal Manufacturing Run Capacitor 5VR0303 is the capacitor installed on the Century Motors model B2855.  RUN CAPACITOR, 30 MFD (5VR0303)  The seal kit containing the motor shaft seal, seal plate gasket, and diffuser o-ring is specific to the model of Hayward Pump.  Please provide the model of your Hayward Pump and a recommendation can be made.  
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?     Asked on 3/22/2023by Jonathan

what is the proper capacitor for this unit?
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A  Answered on 3/23/2023 by InyoPools Product Specialist Craig C.

Hello Jonathan.  The Pool Pump Run Capacitor, 30 MFD, 2444 - 5VR0303 is the B855 Run Capacitor.  Attached please find a B855 available parts list for reference.  Century 56Y Up Rate Single Speed Series  B855
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?     Asked on 8/30/2023by Josh Webb

I’m purchasing a new pool pump, wet end and new motor, the wet end I purchased is the 2 HP WhisperFlo Pump Wet Fluid End 075455, will this motor mount to this pump? Thanks

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A  Answered on 8/30/2023 by InyoPools Product Specialist Jacob F.

Hello, the B2855 motor will be compatible with your Whisperflo wet end-- you will just need to use a shaft seal to bond the motor shaft to the wet end. 
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?     Asked on 10/30/2023by David Summerlin

I need a seal kit for the motor and pump. From reading what I can on the pump- it says Challenger AC-FAB 2 1/2. And then on another sticker it says CHII- N1-2 2 1/2 and below that 1-??-L98 / 34-6209 Can you help me with the seal kit. DO I need the Pentair Challenger CH11 Series Seal Kit- GOKIT5 ?
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A  Answered on 10/30/2023 by InyoPools Product Specialist Craig C.

Hello David.  The Pentair Challenger CHII Series Pool Pump Seal Kit - Model GOKIT5 or the Saltwater Pool seal kit Pentair Challenger CHII Series Pump Seal Kit - Model GOKIT5ALT - GOKIT5SALT is the appropriate Seal Kit for the Pentair Challenger CHII-N1-2- 1/2.  Attached please find the   Pentair Challenger Pump Parts  diagram for reference.
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