What is Service Factor?
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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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Why do I need to purchase a new shaft seal?
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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.
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Why should I purchase a Tune Up Kit?
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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.
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does this motor come with the gasket kit?
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Hi Brad - No this motor does not come with the the Tune up Kit. Here we carry a full selection of Tune up Kits.
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I bought this motor about 4 years ago, Today when I try to run the motor, it makes a humming sound but does not run. Is the motor shot and need of replacement or could something else be wrong?
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Hi Brad - The humming noise typically indicates that your capicator needs to be replaced. We have a great guide on How to Replace a pool motor capacitor I would take a look through it as it should be helpful on showing you how to replace your capictor. If you decide you are going to replace your capacitor then we have a second guide which shows you How to select your pool pump capacitor.
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What size wire do run to power this pump?
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This document shows the Wire Sizing Guide for Pool Pumps and should help you determine which wire you will need.
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will3 hp sq1302 a. o smith motor fit pentair challenger pump?
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Technically speaking yes this motor would fit a Challenger pump but whether it is actually compatible with your current Challenger pump parts would depend on the impeller and diffuser model currently used.
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I have a Challenger Pentair 2-1/2 HP Pump, Model # CHII-N1-2 1/2 AE. I need to replace the motor, but it doesn't have a model #, the Part # is 0-168786-07. The problem is, none of the motors on this web site match the pump model #. Do you think this motor will work on my pump, also would it be better to pay the extra $40 and get the energy efficient model. Thx for your help.
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Give correct impeller and diffuser part numbers for B2840 motor
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The part information would be identified by the make and model of your PUMP, the front half that the motor attaches to. If you can provide me that information, I will be better able to answer your question.
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Whisperflo-30: my current motor is a B855 (2 HP) but the pump is a 2.5 HP and this seems like it is the right one.
I had a home warranty when they replaced the last one.
How long is ground transportation?
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Hello David, yes the A.O. Smith 2.5 HP, 56Y Frame, Up-Rate Motor (B840, B2840) is the correct replacement motor for the WF-30 Whisperflo Pump. I would also recommend replacing your seals with the Tune Up Kit Pentair/Purex Whisperflo - GOKIT32. The tune up kit contains all o-rings and the shaft seal for your pump.
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Hi there, I have a Jandy Stealth SHPM2.5-2 2 speed pump & motor. I just wanted to check and see if this is the correct replacement motor and inquire which is the correct tune up kit. The pump tries to turn on (makes the initial noise) and shuts off almost immediately, breaker does not trip. Thanks!
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Hello Albert- The A.O. Smith 2.5 HP, 56Y Frame, Up-Rate Motor (B840, B2840) B840 is the correct replacement motor. There is not tune up kit for this pump, but to determine the correct shaft seal it would be determined by the serial number on your pump. The Shaft Seal OEM (R0445500) is used on Stealth Pumps with Serial #'s of P08FF0001 and earlier. Models with serial numbers later than that would use Shaft Seal (R0479400) OEM.
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I purchased the motor March 2015. This morning the motor quitted and did not start after turning the switch. The capacitor appears to work fine. Is there anything I should do? What is the warranty coverage for the unit? Thanks!
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All motors we sell are warranted for one year. You can try removing the motor from the housing to see if debris is jamming the impeller. You can also inspect between the motor and the motor mounting plate for corrosion on the face (metallic front) of the motor. This would indicate the pump/shaft seal failed. This water damage (if present) would have damaged the bearing in the motor. Replacing the bearings would be another option to repair the motor. Here are a couple of links that may help you with this problem: How To Determine Why a Motor Won't Start or Shuts Off and How To Replace AO Smith Motor Parts - Overview.
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I am about to order a B840 from you. What is the part number for the gasket/seal kit for this unit?
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Can this motor replace the pentair 011773 1.5 hp motor on my current pump? Will it fit proper and operate with the same impeller? Looking for my pump to not need to work so hard to push water up through my roof top solar heater.
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Hi. Yes, this B840 motor will operate the Pentair pump 011773 without changing the impeller. I will recommend that you get the Whisperflo Tune Up Kit - GOKIT32 or GOKIT32SALT.
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Will this motor replace the motor on a PEAAXSSG-184 Max-E-Glass Sta-Rite pool pump? I use the pump for a shellfish hatchery and it is crucial that the internal metal parts be stainless steel thus the "SS" in the model number. Copper or bronze parts are toxic to the shellfish. Thanks.
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Hi, Rick. This Century B840 motor can be used as a replacement. The Stainless steel parts are for the pump assembly, not the motor.
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I need to replace the motor from my Jandy Stealth SHMP 2.5p.
The pump motor is a Century Centurian
A.O. Smith Part# 7-193995-07
Do you have this motor?
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I have a Pentair whisperflo 2.5 hp pump . Model #011775. That was placed 2013. The pump is not working and making a loud banging noise , is extremely hot to touch and will burn your hand and smells like something is burning . I believe I just need a new motor . What motor do I need and what other parts to go with it ?
Thank you
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Yes, this would be a compatible replacement motor for your original Whisperflo pump model and we recommend replacing the seals and gaskets as well. For your pump that would be either the GOKIT32 or the GOKIT32SALT for a saltwater pool.
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can I replace my old B855 motor for this model?
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Hi, Victor. Yes, you can. If you also want to increase the water flow, you will have to replace the impeller and or the diffuser of your pump.
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Can you quote the impeller and diffuser and the seal and gasket kit
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I have a 2hp 56y pentair pump. Looking to replace w/ B2840. Is this a viable option?
Any other info you need for correct capacitor
Thank you
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Hello, Unfortunately, we do not have that information available. Please call 937-667-2431 (ao smith) for them to get you the right part numbers.
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Hi, I need to replace the AO Smith motor on the SVL56 Waterways pool pump. The motor part no is 7-177897-22, serial No BZ05-11. Specs look comparable to part no B840 motor you sell. There's another descrition on the motor sticker that shows FR Y56Y. Am I ordering the right motor? Thanks.
Hello - Your motor part number 7-177897-22 most closely matches the 2 HP Square Flange 56Y Up Rate Motor - B855
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Thanks, now I know the correct motor. I also just received a very helpful video from INYO showing step by step how to replace the motor. That is really useful!! I now also know that I need to buy a Go-Kit so that I have new gaskets and o-rings. I checked your site and I cannot locate one for a Waterways pump. It's a SVL66 unit. Do you have one?
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The Waterway SVL does not have a gasket kit, so you would need to buy the gaskets individually.
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Hi,
I have a Jandy Stealth Pump SHPM2.0, SN: M07FF2120. I'd like to upgrade it to a 2.5HP (uprated). I believe I can use the following:
B840 motor, R0807200 impeller. Is this correct? If so, what shaft seal should be used?
Also, I believe I can re-use the same diffuser, correct?
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Hi. That is correct, this B2840 motor, and Impeller Kit - R0807200 is correct. I would recommend replacing the Diffuser Kit - R0445400 since you are replacing the Impeller along with the Pump Shaft Seal - R0479400. You should only make this upgrade once you've confirmed that your system can handle the increased water flow.
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I need to replace the motor for Century Centurion A.O Smith 2.5 hp part 7-186237-01 serial CA07-19. What do I replace it with? I can't find it.
Based on the information provided the A.O. Smith 2.5 HP Square Flange 56Y Up Rate Motor - B2840 would be correct.
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Can I please get some help to replace the following B840 pump? Also, that tune up kit do i need to match the pump for my salt water pool
thank you
This is the correct replacement and in order to locate the correct seal kit, we will need the model name or number of the front pump housing that the motor attaches to. If you cannot locate that information please send images to upload@inyopools.com so we can review and further advise.
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I have a Century Centurion - CAT BPA452, Serial 10114CH, Part 0-F56AB04A01-03, TYPE cx, FRAME Y56Y, HP 2.60
SF 1.00, PH 1, HZ 60, RPM 3450, VOLTS 208-230, AMPS 11.0-10.2
Is this the correct replacement motor?
Hi Robert, yes this is the correct replacement motor for your motor included in the photos. When replacing a pool motor we do suggest a Seal Kit. Could you send us a few photos of your pump so we can suggest the proper seal kit? If so then please take a wide shot of the complete pump to include the pipes going in and out of the pump. To supply photos simply click the reply link below and upload your photos. Once we get those photos we can make the proper recommendation for your seal kit.
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I guess my motor is broken because it makes really loud whining noise when it runs.
Can you help me which one I need to buy? I have whisperflow (WF-30), but my current motor is B2748. They have different HP. one for 2 HP, and the other is for 2.5 HP.
It seems either B2843 or B2840 is right one, but I am not sure whether I need to buy B2748. Please help me.
Thx
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Hello, you can actually use either the B2748 or the B2840 as they both have the same total horsepower. It can be confusing based on the way the manufacturer labels these. Here is a guide that we put together called "How To Understand True Pump Horsepower - Up Rated vs Full Rated" that better explains.
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What's the difference between B2840 and B2843? Can I use either one for my WF-30 2.5 HP?
I have no idea between energy efficient vs standard efficiency. Could you let me know which one is better and why?
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Both the B2840 and the B2843 have the same total horsepower however the B2843 uses slightly less amperage making it a more energy-efficient motor.
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It seems B2843 has 2 HP, not 2.5 HP. Can you please check? Also, which one do you recommend for whisperflo WF-30 2.5 HP? B2840 or B2843?
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Yes you are correct and we would suggest the B2840 2.5 HP Motor for a WF-30 2.5 HP Pump. You will also need this 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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Hi,
Do you know if this would replace the Pentair 7-186237-01 2.5 HP motor? It is currently used to power my water features but the motor is not working. Thanks!
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Hello, yes the Magnetek Century 2.5 HP Square Flange 56Y Up Rate Motor - B2840 would be the correct motor.
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Folks,
My current motor is B840 (old one). Looks like B2840 is a direct replacement. Is it just a matter of swapping out the motor - no additional parts necessary?
Thanks, Andy
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Hi Andy, Yes the B2840 is a direct replacement for your B840 Motor. Whenever you replace a pool pump motor we recommend a tune-up kit. Could you send us a few photos of your pump and motor? Please take a close up shot of the motor label as well as a wide shot of the complete pump to include the pipes going in and out of the pump. To supply photos simply click the reply link below and upload your photos. Once we get those photos we can make the proper recommendation for your tune-up kit.
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Is this motor a direct replacement for Jandy SHPM2.5 HP (part # R0479305)? Do you have a tune up kit including the shaft seal to go with it?
Thanks!
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Hi James, could you send us a few photos of your pump and motor? Please take a close up shot of the motor label as well as a wide shot of the complete pump to include the pipes going in and out of the pump including the label with the serial number. To supply photos simply click the reply link below and upload your photos or quickest using our live online chat feature. Once we get those photos we can make the proper recommendation.
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Need replacement 2.5 hp motor and tune up kit for water feature pump
The correct motor replacement is the 0-193988-20 is the Century 2.5 HP Square Flange 56Y Up Rate Motor - B2840. The Jandy WFTR Water Feature Pump does not have an associated gasket kit. The required shaft seal needed to complete the motor installation is the PS-4280 (Heavy Duty).
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Is this the correct motor replacement for this pump?
Are there any other parts I will need to complete?
Thanks!
Hello Larry. The Magnetek Century 2.5 HP Up Rate Motor is a compatible replacement for the Pentair Pool Products Motor model 186237. It is recommended that the motor shaft seal, seal plate gasket, and diffuser o-ring be replaced at the same time. These parts are specific to the manufacturer/model of the pump and not the motor. Please provide this information and a recommendation can be made. If this information is no longer available or visible on the pump, please provide several photos of the pump inclusive of the intake and discharge plumbing which will assist in identification.
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The motor will be installed without shelter from rain. Is this motor weather resistant?
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Hello Tarik. The Magnetek Century 2.5 HP Up Rate Motor model B2840 is weather resistant. There are several steps that can be taken to maximize the life span of the pool pump motor. Keep debris away from the motor's cooling ports to prevent overheating, do not expose the motor to landscape irrigation water, maintain a clean pool filter, make sure the installation site has proper water drainage - water drains away from equipment and no standing water is present around the motor area. The use of a Protective Motor Cover can be beneficial. Protective Pool Motor Cover - R221016
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Will this pump replace Century Centurion A.O. Smith 7-193987-24. If not do you have one that will?
Hello Kenneth. The Century 2.0 HP Square Flange 56Y Up Rate Motor - B2859 is the direct motor replacement for the Century Centurion Motor model 7-193987-24. Technically, the Century Magnetek Motor model B2840 is a compatible motor replacement but is rated 1/2 HP higher than the 7-193987-24.
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I need to replace my century Hp 2.6 , SQ1202
Hi Del, the correct replacement motor for you pool pump is the SQ1202. We also recommend replacing the seals and gaskets when replacing a pool pump motor. In your case those would be key numbers 6, 7, and 10 on this Sta Rite Dynapro parts diagram.
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Hi,
I have pump CAT B2854 with part number 0-F56AA40A01-24, would this model (B2840, 2.5HP) fit? if so, what's the advantage of running with HP 2.5 vs the old HP 1.5 when the RPm is the ame at 3450.
Thanks in advance
Hello Joe, so the B2854 is the correct replacement motor. If you were to try a larger horsepower motor of that magnitude it could cause issues in your system due to the increase of suction and pressure. I advise to go with the original HP for a single speed replacement. We also recommend replacing the seals and gaskets when replacing a pool pump motor. Here is our "Finding the Tune-Up Kit for Your Pool Pump' guide that should assist.
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could this be a replacement motor for my current one
Hello Carlos, yes this would be a suitable replacement motor for your motor part number f56ab34a01. We also recommend replacing the seals and gaskets when replacing a pool pump motor. Here is our "Finding the Tune-Up Kit for Your Pool Pump" guide that should assist you with that as well.
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i have a hayward tristar pump and need a new motor. is this the correct replacement? what else should i buy in so far as seals, etc when i change the motor out?
Hello, yes, the Century (A.O. Smith) 2.5 HP Up Rate Motor, Square Flange 56Y Frame, Single Speed - Model B2840 will be the correct replacement for your motor, and you would want to purchase the Saltwater Tune Up Kit Hayward TriStar/EcoStar - GOKIT81SALT to replace your seals.
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Will this replace the motor this this Pentair WF-30 pump?
Hello Jeff. The Century (A.O. Smith) 2.5 HP Up Rate Motor, Square Flange 56Y Frame, Single Speed - Model B2840 is the appropriate replacement motor for the Pentair motor 196241 installed on the Pentair WhisperFlo WF-30, 011775. The Pentair WhisperFlo Pool Pump Seal Kit - Model GOKIT32 contains the seals and gaskets necessary for the new motor installation. Attached please find the Pentair Whisperflo exploded parts diagram for reference.
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