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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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?
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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.
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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?
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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.
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Hi,
I have to replace a AO Smith B738 pool/spa motor. Do you have an energy efficient version of the same motor?
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Gen, the AO Smith 2HP EE Full Rate B843 would be the EE version of the B748.
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is this the correct replacement motor for centurion/pac fab part # 7-168786-07. 2HP,3450RPM FRAME Y56Y.if so what is o-ring kit.
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How do you disassemble a pol pump?
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We have a good Video here On Taking apart a Pool Pump.
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Does this motor fit on the pentair challenger pool pump number 346201
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Hi, The A.O. Smith 2 HP, 56Y Frame, Up-Rate Motor (B855) will be the correct replacement motor for the Pentair Challenger 346201 Pump.
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I have a pentair 2hp superflow will this motor work and do I need to buy any thing else like o rings or seals and ?? I have never done this before, but can not afford having a company do it.. so not sure exactly what I will need to purchase
Thank you for you help
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Hello, Kathy. Yes, the 2 HP Standard Motor - Full Rate (B748, B2748) is the replacement motor for the Pentair SuperFlo. The suggested replacement parts can be viewed on link http://www.inyopools.com/pool_parts_pentair_superflo.aspx or click here. When viewing the Schematics, I will suggest the most common replacement parts used when replacing a motor. Key (#16) Seal Diffuser (#14) O-Ring Valve Adapter (#22) Shaft Seal- (This item must be replaced). Magic Lube O-ring Lubricant 1 Oz. Teflon is applied to the rubber O-Rings is best-suggested. Click here to view "How To Replace the Motor on Your Pool Pump". We have many other resourceful guides available, click here to view them.
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I have previously used Century B748 motors on the Challenger applications. Today, I was supplied with the B2748 motor for that same application. Has B748 been superceded by B2748?
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Hi Eddie, The B748 and the B2748 motor are the same motors just a more current part number.
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Need to replace Magnetek 56Y, B748, 2HP. It is running at 230 V is the AO smith pre wired at 230 and how do I double check that?
Magnetek P/N 10-186016-02, SF 1.30
Thanks
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Hi Chris, This motor is only able to operate using 230 volts so it will come set for 230 volts.
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Does this pump come with seals?
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Hello Kimberly - The motor does not come with seals. The seals are not included because this motor is used on several pumps. The seals are determined by the make and model of the pump. If you know the make and model, we can recommend a seal kit. If not, email us a picture of the complete pump and we'll make a recommendation.
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i would like to verify a replacement pool pump for pentair whisperflo 2 hp. The pump label is century centurion a.o. smith part 8-177452-03. type cx, fr y56y.
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Hi This motor or the B843 which is an energy efficient option will work as a replacement for p/n 8-177452-03 motor you have. I would also recommend getting Pentair/Purex Whisperflo Tune Up Kit p/n GOKIT32 or GOKIT32SALT.
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I have a Pentair Challenger 2hp pool pump part number 345218. Is this motor the correct replacement part?
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Hi Keith, Yes this is the correct replacement motor for the Pentair 2 HP Challenger 345218. We would also suggest a Pentair Challenger Tune Up Kit when replacing your motor.
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I have a 2HP Spa Motor that burned out. AO SMITH 227T. CX SERIAL #BX10-28.
PART NUMBER 7-177452-03; 18808001.
TYPE CX.
THE TYPE OF PUMP IS A WHISPER FLO. PLEASE ADVISE COST AND AVAILABILITY. THANKS
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The correct replacement motor is the A.O. Smith 2 HP SQ FL B2843. You can click on the link for current pricing information.
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What is the difference between a "full rate" and an "up rate" motor? Is there any advantage to using an "Up Rate" motor?
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Michael, The main difference is that a full rate motor has a higher amp draw and higher total horsepower than an up rate motor. You will need to match the specs on the existing motor otherwise, you can damage the motor and.or impeller.
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is the B748 the replacement for the B859?
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The B748 can replace the B859, but it would be working at a high amp load because it is a full-rated 2 HP. Unless you plan on replacing the impeller of your pump to increase the water output, there is no true upside.
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I believe I need to replace a Pentair Whisperflow pump. Part#7-177476-20, FR Y56Y , volts 230/115, amps 11.2/22.4, 2 hp single speed, 3450rpm,60 hz.
Can you suggest replacement product and price?
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The replacement motor that matches model #7-177476-20 is the 1.5 HP Standard Motor - Full Rate (B2858).
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can I replace my 1hp motor with a 2hp motor and it match up to my exixsting pump?
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Hi Jeffery, You can replace your existing 1hp motor with a 2hp motor if your system can handle the water flow. You will also need to replace the impeller and or diffuser along with the pump's shaft seal and o-rings.
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How soon can I get a pool motor shipped and delivered?
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If you get it ordered before NOON ET it will ship the same day. Regarding estimated delivery date, that will depend on what state you live in.
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my neighbor has a 7-168786-07 motor. what replacement should i buy.
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Good afternoon Frank, You are looking for a A.O. Smith 2 H.P Square Flange Full Rate Motor - SQ1202 You are also going to most likely need a shaft seal and o-rings. We sell gokits for a lot of different pumps that include all of these parts. If you let us know what kind of pump it is for. We can let you know the correct gokit.
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Can I replace my B2840 2.5HP pump with a 2.0HP pump
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Hi, TC. Yes, you can replace a 2.5 HP motor with a 2.0 HP motor. However, you will have to change the pump's impeller to match the HP of the motor. If you can provide us with the pump model number or the current impeller p/n we can locate the correct size impeller for the 2.0 HP.
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Just triple checking before I place the order. Is this the correct motor replacement and seal shaft? I have a Jandy SHPF2.0 Stealth, Century Centurion, AO Smith Motor. Frame Y56Y, Part 0-193995-07, AMPS SF11.0-10.0, VOLTS 208-230, SERIAL 00511CH. The Jandy Serial# on the Wet End is T11FC2113.
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I have a Pentair Challenger 2HP part # 7-184214-02 and it is getting louder and louder each year. Was looking to replace the motor with a quiter model but didnt want to have to replace the entire pump. Can I get a quiter model.
Also, the electric panel on the inside of this pump has shatter, but I can still make connections and it still runs. Do you have a part number to just replace that electric panel. Would be nice to have a back up if I do make a switch. or fix this one atleast. Thank
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Hi Joseph, The quietest motor we have is the 2.7 HP Variable Speed Replacement Motor this motor is great because it is also extremely energy efficient. Normally with a variable speed motor you are looking at saving 50%-80% on your operational costs over a standard single speed motor. The variable speed motor allows you to have a full range of HP's from .75 all the way up to 2.7 HP. You have the ability to ramp up your pump to the higher HP to run things like spa jets, vacuum cleaners, water features, solar, etc.. however for the majority of the time for general pool filtration you will have the motor dialed down to a low HP and this is where you will see all of your energy savings. If you wanted to stay with a single speed then the B748 would be the correct motor for you and it should be quieter than your current motor as they have made design improvements of the years.
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My Pentair WhisperFlo WF-28 filter pump is powered by an AOS Centurion 7-184214-02 motor. The motor appears to be responsible for throwing the pool sub panel circuit breaker. when the breaker is reset, however, the motor does not come on. it appears to be locked up. is it possible the motor just needs a new capacitor? if not, what is the correct replacement motor?
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David, If you have the WF-28, the replacement would be the B859 motor. Be sure to replace the seals when you replace the motor.
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What would be the replacement motor for A.O.Smith BX1028
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Hi, Ed. Unfortunately, the serial number can not be used to locate the motor's replacement. We will need the PART, CAT or MOD # of the actual motor in order to locate the replacement.
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Will this motor replace mine which is marked "Part 0-193987-24" and also "Volts: 230/115" ?
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If I want to replace just the motor (not the other pump half) with a Variable Speed unit, can I just bolt on the new motor? I read there are some seals that I should also replace, do you sell those seals as well? I have this Centurion B2748 currently with a SF of 1.3 and 2 HP. If you could link to a recommended VS replacement motor and the associated gaskets, I would appreciate it! Thanks
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I just bought replacement motor 7-186016-20. What new seals do i need with this?
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Hi. Mike. The Pump Shaft Seal is specific to the pump housing, not the motor. You will need to provide us with the pump housing model or name.
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My spa pump is a b748 coupled to a sta-rite p4 pump. I have tried in vain to remove the impeller from the motor. Tried to twist off, but no movement. Removed nut connecting impeller to motor shaft, still can’t twist or pry off shaft.
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Hi, Al. That pump model has an impeller screw. Before removing the impeller, you will have to first remove that screw. You can use our How To Replace a Sta-Rite Max-E-Pro Pump Impeller guide.
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I have a Pentair superflo 340040, can you tell me what motor replacement options I have?
Can I replace with variable or 2 speed and would it integrate with aqualogic ps8 software rev 2.86 ?
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Hi, Mark. The B2859 or PL2859 are your single speed replacement options. The ECM27SQU as a variable speed upgrade and or the B2984T dual speed motor. Whichever option you choose, you'll need to get the Pentair SuperFlo Tune Up Kit - GOKIT78.
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Is this compatible with the Jandy Stealth Pump Model # SHPM2.0
Serial# M07F343
And if so- what go kit should I get?
Hello, The replacement for the SHPM2.0 is the B859 motor. There is no tune-up kit for the Jandy Stealth. At the very least, you will need the shaft seal. Based on your serial number, it would be this one. I would also recommend replacing the back plate o-ring.
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Is this the motor I need? I’ve attached a photo of the data sticker. Is there a kit that includes all the o-rings and shaft seal, etc for my Pentair Challenger pump? Anything else I need? I’d also like to replace the diffuser 35-5545.
Hi Steve, yes based on your photos you will need this B748 replacement motor. We would also suggest the Pentair Challenger Tune Up Kit which includes all of the o-rings and shaft seal for your pump. We do carry your 35-5545 Pentair Challenger Diffuser. We also have a Video on How to Replace a Pool Pump Motor which you may find helpful when you tackle this project.
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is this motor a compatible replacement for a Jandy Plus HP 2 HP PHPF2.0 pump
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Good Afternoon- The A.O. Smith 2 H.P Square Flange Full Rate Motor - SQ1202 is the replacement for your Jandy Plus HP 2 HP PHPF2.0 pump.
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Is this a replacement for an older B748 Model ....serial # 106073M.....all of the specs seem to be the same. Also what would be the capacitor model # for the B748?
Hi, Leon. Yes, this is the correct replacement motor. The replacement capacitor is part # 628318-307.
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Have a AO Smith 2 hp Century Centurion motor part #7-193995-07 and a Jandy Stealth pump model SHPF2. OCP is the B2748 the correct replacement? Thank You
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Hi, Tom. This B2748 motor is the correct replacement motor your model pump. You will also need to replace the seal for the pump which all listed on the Jandy Stealth (2006-Current) SHPF & SHPM Parts Diagram page.
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Is this the correct motor replacement?
Hello, Yes, that will be the correct motor replacement, This will be the tune-up kit you will need as well.http://www.inyopools.com/Products/00500000040110.htm
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Trying to replace impeller but not clear as to whether I have to take the back off the pump to secure the shaft. Pls take a look at the pictures and tell me what you think Thank you !
The rear of that shaft should have a plastic cap on it that you can remove and expose the shaft allowing you to hold it steady with a wrench.
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Trying to replace impellar on my challenger but not sure how to remove the back cover to secure the shaft could you pls look at the pics and advise thank you !
challenger 10-168786-07 Y56Y
The black button looking thing surrounded by the circle of dirt should b a pop-off cap that covers the backend of the shaft. Once the cap is removed there would be a slit or hexagonal shape you can secure the shaft with.
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What wires go on what leads for this pump?
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Hi, Robert. This motor is 230 volts only, so each terminal L1 and L2 will both have a lead. See our How To Wire A Pool Pump guide.
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Hi, It comes wired from the factory at 230 volts. The wiring diagram on the motor shows both 230 volts and 115 volts. My wiring from the panel is only low voltage. I need to know where I put the black and white wire. I know where the green goes. I will have to change the wiring in the motor from high to low voltage and there is a diagram. If you are correct regarding this motor only being 230 volt then there shouldn't be a diagram on the motor showing low voltage wiring.
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What is the correct replacement motor for the Centurion Challenger 2HP 168454-25
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Hi Richard. The correct replacement motor you will need is the A.O. Smith 1.5 HP Square Flange 56Y Full Rate Motor - B2858.
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Will this motor be a suitable replacement for my Jandy Stealth Model SHPF-1.5 pump with a AO smith motor part number 7-193994-06?
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Hi,
Can I replace my B855 2 HP motor with a B2748 for a Whisper Flo pump? Thanks
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Looking for the Pump Pot cover that conncects to this pump. The Century B2748 is the pump. In front of this is the pump pot and I need the cover. Both photos are attached. One of the pump and one of the pump pot cover.
Hello, Are there any part numbers on the pump?
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Are there any part numbers on pump trap? Any idea how old it might be? We are not familiar with this manufacture. Did someone put two different brands together?
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I have a Pentair SuperFlo 34-0039 which I believe is a 1.5 HP motor (side of the motor shows 177475-20 Y56Y).
I need a replacement motor. It started rattling and just quit. What other seals/kits would i need when replacing this motor. Which replacement motor do you recommend?
I have a Jandy stealth 2 hp pump for pool & spa. It runs & moves water on high speed. It runs but doesn’t move any water on low speed. Any suggestions what the problem is?
Thanks, Jim
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Hi, Jim G. The issue could be that the Total Dynamic Head (TDH) of your pool is too high so the pump is not able to move water at low speed.
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My pool currently has a B2854 1.5 hp motor. I need to replace it and was wondering, since they appear to be the same size, if it could be replaced with a B2748 or B2843 2 hp motor. Is this possible? Is it recommended? Would there be a noticeable improvement with my pump by increasing .5 hp? Definitely need some help with this one.
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Hi Tim, You could see some improvement by bumping up your HP. 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.
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What is the difference between the century B2748 and the Century B2843?
Is one uprated vs full rated?
Same RPM's
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Hi Joseph, yes the B2843 is the full rated model. Here is a guide called "How To Understand True Pump Horsepower - Up Rated vs Full Rated" that may better clarify the difference.
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My pool pump has been noisy and may probably need replacement. Please see enclosed photos for the pump brand. I want to make sure I order the correct repalcement. Please advise.
Hi, yes this is a correct replacement single speed motor for your motor part number 177452. 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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Hi! I’m attaching a photo of the pump plate to be replaced, I believe it is this one B748. Is there an energy efficient unit that could be used instead?
Hi Glenn, the energy-efficient single speed replacement motor for your motor catalog number B748 is the B842. 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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Hi! What is the correct seal replacement kit for my setup? My pump failed last week and needed to order the correct parts.
For us to suggest the proper seal kit could you send a photo of a wide shot of your complete pool pump to show the pipes going in and out of the pump? To supply this photo simply click the reply link below and upload your photo. Once we get this photo we can make the proper recommendation for the seal kit.
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Need info to replace century 2.0 hp 56y b2843 to mate up with Superflo Part # 340040. all gaskets and what not.
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Just purchased a Century B 2748. Hooked up motor and all I got was a buzzing sound??? Black to line 1 and neutral white to line 2.
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It sounds like you are trying to wire it for 115v. The B2748 is a 230v motor. There should be no neutral wire. One hot line would go to L1 and the other hot line would go to L2.
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I’m replacing the motor pictured with this one. I’m wondering which seal kit to order. Thanks
Hi Karen, you will require this Pentair Challenger Seal Kit
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Hi. The motor on my Jandy 2.0 shpf 2.0 model 193995 froze up. Will this motor work and what other parts will I need to replace it (sealing kits, etc)? thanks.
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Yes, this is the correct replacement motor for the motor included in your photo. You will also need a Jandy Stealth Shaft Seal 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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I currently have a 184214-02 Centurion Pac-Fab Challenger motor servicing a inground spa hot tub and pool combo. says 3450 RPM ... Is this the correct replacement and if so what else (seals etc) do I need to do a push pull .
Yes, this is the correct replacement motor for the motor included in your photo. You will also need a Pentair Challenger 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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I see there may be different Horse power ratings... the one recommended is 2 hp what does 5 hp do ?
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Hi John, A 5 HP would pump more water but your pump and filter would need to be set up to accommodate 5 HP and there would be a lot of parts that would need to change out to go to 5 HP. 99.9% of the pools would be sufficient with a 2 HP motor and your pump is currently set up for a 2 HP.
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Just want to say thank you for your help. I appreciate it. I reached out to two pool places with all the info local to do the job, no one got back to me. Again than you, take care
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Thanks John! If you ever need any help with your pool in the future don't hesitate to reach out to us.
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The impeller was very difficult getting off (18 yrs old) a piece broke off.. need to order a new one.... is part number 35-5604 correct ?
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Is the Century 2.0 HP square flange 56Y Full Rate Motor - B2748 the correct replacement motor for the Pentair Model #184214?
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Hello Greg. The Century Motors 2.0HP Full Rate Motor B2748 is the correct motor replacement for the Pentair Model 184214.
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Is the replacement motor for the Centurion 2HP Model# 193990XCN
No, this is a single-speed motor. You have a 2-speed motor. The 2-speed replacement motor is model B2983. B2983 is listed as a 1.5HP full rated motor but the total HP rating is 2.21. That would match what you currently have.
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Need replacement motor, impeller, diffuser and necessary seals/hardware (that aren’t reusable from the original) for a jandy stealth shpf2.0 pump with a 7-193995-07 motor.
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Hello Robert. The Century Motors 2.0 HP Full Rate Motor model B2748 is compatible with the Jandy Stealth SHPF Series Pump with motor number 7-193995-07. The part numbers for the replacement Impeller, diffuser, and motor shaft seal are R0807200, R0445400, and R0478400 respectively. Please note: the motor shaft seal is specific to the serial number of the pump. Pump serial numbers P08FF0001 and later utilize the shaft seal R0479400. Attached please find an exploded parts diagram for the Jandy Stealth SHPF Series Pool Pump. This diagram will assist in visualizing the parts necessary to complete this project. Jandy Stealth SHPF & SHPM Series Pump (2008-Current)
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Hi I need a pump to replace this one. please advise if you have one.
Hello Mike. The Century Motors 2.0 HP Full Rate Motor model B2748 is the direct replacement for your Century Motors model 7-193988-20. Century 2.0 HP Square Flange 56Y Full Rate Motor - B2748
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I have a Pentair whisper flo pump and need a replacement motor. What do you recommend?
Model: WFE-8
Part Number: 011515
Motor: 196235
HP: 2.0
SFHP: 2.60
Thank you for contacting Inyo Pools, Century 2.0 HP Square Flange 56Y Full Rate Motor - B2748 would be the motor replacement. Tune Up Kit Pentair/Purex Whisperflo - GOKIT32
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I have a Jandy shpf2.0 and need the replacement motor and seal kit. I believe the b2748 is the correct motor but don't see the seal kit
Yes, the B2748 will be a perfect motor for your Jandy SHPF2.0 pump. Unfortunately, we do not have seal kits for those pumps, so be sure to get the Jandy Pump Shaft Seal 5/8" - R0479400, a Backplate O-Ring O-521, Diffuser O-ring - R0622000, and some lubricant to keep them sealed for a long time.
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i have Pentair motor # 196240 Pump WF-28 hp2.0 S.F. hp2.20 3450RPM S.F. 1.10 looking for correct replacement motor part Number.
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Hello Daniel. The Century Motors 2.0 HP Up Rate Motor model B2859 is a compatible replacement for the Pentair Motor model 196240. 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 parts necessary to complete this project. GOKIT32 Attached please find the Pentair WhisperFlo exploded parts diagram for reference. Pentair Whisperflo Pump
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This motor looks to be a direct replacement for my old pump motor (see photo's), but would like verification. Additionally, my pump is a MPRA6G-155L - what tune-up/refurbishment kit is required to support the change-out of the motor? And, are the motor and kit both in stock?
J
Hello James. The Century 2.0 HP Square Flange 56Y Full Rate Motor - B2748 is the correct motor replacement for the Century Centurion motor model 7-186016-20. The Tune Up Kit Sta-Rite Dyna-Glas & Dyna-Max - GOKIT47 contains the seals and gaskets necessary to complete this project. Both items are currently in stock.
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My Pentair Challeger's motor went bad and attached is the motor and the pump pics. Can you please advise the replacement motor and the seal kit? thanks
Hello Hung. The Century 2.0 HP Square Flange 56Y Full Rate Motor - B2748 is a compatible replacement motor for the Challenger model CHII-N1-2F/345218 and motor model 196252. The Pentair Challenger Pump Tune Up Kit (CHII Series) - GOKIT5 contains the necessary seals and gaskets to complete the motor replacement.
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The pump motor (Model B2748) needs to be replaced.
Please tell us the seal kits suitable for the PHPF2.0 model.
And I need the part number too.
Hello Dave, most often the seals and gaskets replaced for your series pool pump will be key numbers 5(second), 13 and 15 on this parts diagram of your pool pump.
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Hello. I need to replace my century motor 7-193995-7 connected with Jandy Stealth pro series SHPF2.0 (I guess the serial # BH EH01 0100 3720 0371)
What motor model would be compatible and what type of seal I should get?
Hello, the correct replacement motor for your pump would be the Century (A.O. Smith) 2.0 HP Up Rate Motor, Square Flange 56Y Frame, Single Speed - Model B855 - B2855, and the correct seal would be Pump Shaft Seal, Old Style, 3/4" - R0445500.
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How long do they typically last? I think this one was installed when the pool was built in 2000.
The "jet Cleaner" breakers trip often.(see photos)
I'll be checking the AMP draw, today. Thank you!
The lifespan depends on the elements around the motor. If the motor is covered and well-ventilated, it can last 10+ years. If the motor is exposed to heat and water, you might get 5 years. The breaker could be faulty but it could also be caused by a failing motor. Common issues would be worn bearings, shorted windings, or a bad capacitor.
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