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 now have a square flg.motor. will any square flg. motor fit my pump
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Hi Tony, To determine which motor you would require we would need to know the model of the pump itself, this should be on the side of the pump near the basket. We would need the manufacture name and model # of the pump. Examples of the Manufacture would be Hayward, Pentair, Purex, Sta Rite, Jacuzzi, etc... Examples of model names would be Super Pump, Super II, Whisperfo, Magnum, Dura Glas etc.. Please provide this information along with any of the following information Horse Power, Volts, SF, RPM & Amps and we will be able to determine which motor you would need.
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I have an AR205-L Anthony pump, it's a one horse A.O. Smith. Will the AR206-L replace it? Thanks.
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Hi, The A.O. Smith 1 HP Square Flange Full Rate Motor (SQ1102) will be the correct replacement motor for the 1 HP Anthony AR205-L Pump. You will also need to replace the Shaft Seal (U109-93SS-50).
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I see the "tune-up" kit contains the motor shaft seal which is essential to be replaced with the motor, but also contains a housing gasket, diffuser gasket, and pump lid o-ring. Do all of these need to be replaced with the motor? If think the housing gasket is for the impeller housing (not the motor), the pump lid o-ring goes on the clear plastic lid which screws on the basket in front of the impeller (also not related to the motor) and I'm not sure what the diffuser gasket is for.
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Michael, The kit contains o-ring associated with the pump. Since the motor is more or less generic (it fits onto multiple pumps), the seals would all be based off and related to the pump. There is usually a shaft seal that goes behind the impeller and in the seal plate (part of the pump that bolts to the front of the motor), the diffuser o-ring is for the cone like part that goes over the impeller, the housing gasket which is for the body where the two halves of the motor match up. It is highly recommended that you change the shaft seal every time you take off the impeller. As for all the other seals, they are recommended but optional, it just gives you a change to do a complete overhaul on all the gaskets on that pump.
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I have an 20+ year old Sears Centrifugal pump Model 390.262501. It has an A.O. Smith motor 1.5HP C48L2EC11 which shows as a cross ref. for this motor. The wet end of the pump is relatively new and I believe the original pump was STA-Rite mfg. Is there anyway you can tell if the SQ 11O2 is a good replacement to fit the wet end?
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Hi Paul, The A.O. Smith 1 HP Square Flange Full Rate Motor (SQ1102) will replace the current motor that you have with the mod # C48L2EC11. It will also fit onto the wet end of the pump that you have.
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Hi,
I have a sta rite well pump with an a.o. Smith motor with what appears to be the following number a.o. smith c48k2ec11. I also see that it is a 1 hp on the tag. Your cross ref puts it at a 3/4 hp model. Can you tell me what the correct motor is for the SNE-1 sta rite pump? Thanks
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is this the right replacement motor for C48K2PM100?
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The correct replacement motor for model number C48K2PM100 would be the A.O. Smith 3/4 HP Square Flange Full Rate Motor SQ1072.
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is this motor compatible to a C63737543?
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Hi David, I was unable to cross reference p/n C63737543 to this or any other motor. If you can provide the model # of the pump housing or a photo of the motor label we can locate the correct replacement.
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This looks to be the replacement for my Sta-Rite Duraglass w 1hp P2RA5E-181L motor. Is there an optional 1HP 2-Speed replacement that would work?
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Hi, The USQ1102 is the correct replacement motor for the P2RA5E-181L pump. The UQS1102R, B2981T (115V) or B2980T will be your dual speed replacement options. Whichever motor you choose I will recommend that you get the Sta-Rite Dura Glas & Max E Glas Tune Up Kit (Pre-1998) GOKIT6 or (Post-1998) GOKIT54.
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Just bought a SQ1102 replacement motor for a A100EHL motor on my P6E6E-206L max e flo pump. Impeller broke in getting off old motor. What is correct replacement...C105-238Por C105-238PB
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Jim, Based on the pump model, the correct impeller would be the C105-238PB.
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Hello. I have this motor and it just took a crap on me. What is the best valued energy efficient motor that you have that will fit to like?
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Hey Kimo, What motor do you currently have just need the model #.
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I have an A O SMITH motor Model C48k2 ra104a3, (AS FAR AS I CAN READ), USG1102, 1HP this motor works but not pulling water to the irrigation pump, took it apart and impella assembly needs replacing. Do you have these parts or give me info. Thank you
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To identify the correct replacement impeller I will need the pump model, not the motor model#. If you do not know what that is, if you attach a picture of the pump I can try to identify it for you. We do not really deal too much with irrigation pumps, but I will see what I can do by looking at the picture.
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if SQ1102 motor is fit my sta-rite max-E glas II. P4E6E-187L pump and what model impeller and pumpshaft seal do i need for replacement. thank you!
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Hi, Lee. Yes, the SQ1102 standard motor or QC1102 EE motor can be used with the P4E6E-187L pump. You will need the Impeller C105-238PB, and the Shaft Seal Pre-1997 (U109-372SS) or Shaft Seal After-1997 (37400-0027S) (without Seal Insert).
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My sta-brit dyna glas model numberMPRA8E 147-L , motor number 048K2PA105. just died what is the replament
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Hello Greg- The replacement motor for the Sta-rite Dyna-Glas (motor C48K2PA105) is the A.O. Smith 1 H.P Square Flange Up Rate Motor - USQ1102. Whenever you change out the motor, we also recommend replacing the seals. The seal kit you would need is the Tune Up Kit Sta-Rite Dyn Glas & Dyna Max - GOKIT47. Feel free to click on the links provided to view the recommended items. Thank you for your question.
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CAN THE SQ1102 IN PLACE OF P6E6E
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Hi, JB. Yes, the SQ1102 motor or QC1102 (Energy Efficient) motor can be used with the P6E6E pump. We also recommend that you get the Sta-Rite Max-E-Pro Tune Up Kit - GOKIT79 which includes all the o-ring needed.
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What motor will replace Motor Mod C48K2PA105 SER 1CW, Type UAC A.O. Smith Corp?
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Hello Dennis- The correct replacement motor for your C48K2PA105 is the Motor, Sq Flange 1hp (small Barrel) (usq1102, B886, 718690720) 5232A.
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I have a Franklin 1 Hp 15.617amps 115/230volts .21,00 gallon pool What is the cheapest replacement motor?
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Hi, MAT7115. We would need additional info like the SF #, FR # and or the pump model to locate the correct replacement.
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have an A.O. Smith motor mod C48K2EC11 that is starting to get hot. it is used on a lawn irrigation pump. what is the cost to replace this motor and seals on pump {Sta-Rite}
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What is the correct motor for my current Sta Rite P4E6E-187L pump? I currently have a model #C48L2PA105C4. Thank you.
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Hi. You can use either this Century SQ1102 standard motor or the Century QC1102 energy efficient motor as a replacement. I also recommend getting the Max-E-Glas II / DuraGlas II Tune Up Kit - GOKIT38.
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need to replace a Sta-rite pool pump 115/230V 60Hz 1PH .75kW 3450 RPM S.F 1.25 MAxAmps 15.3/7.6 Thermally protected Type B Code J
Pump Model No. P2RA5E-181L
Can you help me and suggest which one to get?
Thank You
Alberto Betancourt
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my old motor Sta Rite model no C48K2PA106,. I AM ATRYING TO MATCH UP THE MOTOR
TO THIS PUMP, BUT NO HAYWARD OR OTHER OCOMPANIES ARE MATCHING THIS
NUMBER CAN YOU HELP QUICKLY,
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The motor's label shows A.O. SMITH CENTURY CENTURION, HP=1, SF 1.65, FR = Y56Y, TYPE = CX...will an SQ1102 be the correct replacement motor? Thx!
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I have a USQ1102 motor can I replace it with this one? I believe this one is supposed to be more energy efficient and this one also has a bigger service factor.
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which model do i need SQ1102 or USQ1102 to replace ao smith C48B96c09 1hp 3450 sf 1.65 48y amps 13.4/6.7? what's the difference between sq1102 and usq1102?
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I have an A.O. Smith 1 HP Square Flange Full Rate Motor - SQ1102. I am looking for the seal that mounts in the square flange behind the slinger ring. The configuration has the bearing mounted on the motor side of the flange and the seal on the pump side of the flange. I am not looking for the shaft seal.
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Hi, Larry. The seals are specific to the pump housing, not the motor. You will need to provide the model of the pump housing in order to locate the correct seals.
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My pump smells and keeps kicking breaker. I am going to replace the motor. What other parts will I need to complete replacement properly?
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Hi, Ron. You will need to replace the seal of the pump. You will need to locate the pump housing model or name.
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Does this motor require an impeller locking screw?
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Hi, Ron. The impeller screw will be base on the type of pump that this motor is operating. This motor does have threads to accept an impeller if your pump requires one.
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My old motor had an impeller locking screw but it was damaged because the motor was several years old. I am using the same pump. I found a part number (355389) and ordered one but it is obviously not the right one as it is not close to fitting. My motor has a small hole in the end of the shaft but I'm not sure it is threaded to accept a screw. Can you tell me the correct part number for the impeller screw for the SQ1102 motor and if you have it? Thanks!
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Hi, Ron. You can reassemble the pump without using the impeller screw. It will not harm the pump or hinder the performance of the pump.
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I have a Max-E-Glas II P4E6E-151L. The motor have quit and I was wondering if there was a single speed replacement that was more energy efficient?
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What would the compatible tank body and seal plate be for this model?
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So the tank body and seal plate are based on the model of the front pump housing that the motor bolts to. If you are not sure of that model then you can always send images of the housing to upload@inyopools.com so we can confirm for you.
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I'm installing a new motor part# sq1102, what pump seal do I need. Also have an hsq165 motor, what pump seal for that 1 also.. Thank you
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To determine the proper seal kit we will need to know your pump make and model information, common pump names would be Pentair Whisperflo, Pentair Challenger, Jandy Stealth, etc.. To supply this information click the reply link below, also if you could send a few photos those are always helpful as well. If you send photos then 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 any of this information we can make the proper recommendation.
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hi there, I have a sta-rite max-e-pro that I need a motor and seal kit for. the current motor is a k48k2pa105c3 AO Smith. is this a compatible replacement motor? could you also recommend the seal kit? thanks!
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Drew, the model number k48k2pa105c3 did not reference anything in our system. Do you happen to have the HP and service factor of the existing motor?
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I also have a sta-rite Pump :p6e6e-206l with motor number: k48l2pa105c3 do you know/have the motor I need On my model number plate the 0 is worn it’s possible it’s a 6? (K48l2pa165c3) maybe
The Century 1.0 HP Square Flange 48Y Up Rate EE Motor - UQC1102 with the Tune Up Kit Sta-Rite Max-E-Pro (Pre February 2015) - GOKIT79 **Note: All Sta-Rite Max-E-Pro models February 2015-Current will have to purchase the Seal Plate Gasket PART # 357099Z salt pool owners add the Extra Heavy Duty PS3868 with the Gokit purchase to sub. out the chlorine shaft seal. How To Replace the Motor on Your Pool Pump
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Pool running at high pressure (20-30) off &on for >3y. Replaced grids mult times. Is pump installed the right one for system. Pool is approx 14k gal w/48sf DE filter (label image provided). Plumbing system has 1 1/2 pvc. Unsure if TDH calc correctly. May be around 64. Pool is kidney shape with L29', W15' and W11'; Avg depth of 5.5'. This should give roughly 29 gpm flow rate. Would having a pump too big cause high pressure? I have provided the motor specs in an image also. Thanks for your help!
Hi, Edna. The pump is sufficient for your size DE filter. As for the high pressure, due to the very green pool, the filter will need to be backwashed constantly until the pool is cleaned.
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Thanks for your reply. Previous backwashing has not resolved the high pressure. Even drained the pool. Recently added Purge, no change in the pressure and is running at 8 psi with grids removed. Is it possible for a tree root to penetrate the plumbing of the pool? Has to be another issue causing the high pressure. Pump is the last thing on your blog left to try. Plumber is coming to scope the lines. If that shows clear, what else could it be? The motor was rebuilt a couple of years ago.
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Edna, You will need to look into replacing the Grid Assembly - NS48 48 Sq Ft - 192326 or Grid Pack 48 Sq.Ft. (7 Full&1Partial) - FG1004PACK.
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the pump starts but it wont pump water, do i need to replace pump century SQ1102
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You may have a pump-priming issue if the motor turns on but there is no water flow. Please check out this guide called "How To Determine Why a Pool Pump Won't Prime" that may assist in locating and resolving the issue.
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Will this 1HP SQ1102 fit my Sta-Rite MX E Glas II 1HP pump?? Image of pump tag attached, Thanks
Hi Scott, This is NOT the correct replacement motor for the motor included in your photo. You will also require this Max E Glas II Seal Kit when you replace your motor. We also 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, if this SQ1102 1 HP motor will NOT fit my Sta-Rite Max E Glas II pump, what is the correct motor that will fit this pump? I need a motor and so far the website has not helped me determine the exact one I need. Attached is the current motor tag again to help determine the proper motor I need, Thanks
with impeller
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Hello, 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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I need to replace the motor for my Anthony pump. The label on the motor has worn off so I'm not sure of the type or the power. I took it apart and there was part number on the impeller: C105-138PEC. The diagram on your site led me to this 1 HP pump. Can you please confirm that this is the right pump? I ask because this one is about a half inch longer and doesn't have the capacitor housing on top like my current one. Also can you let me know what else I may need to replace the motor?
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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 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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I have a Sta-Brite pump model number P2RA5E-124 Code # 1K87D will this motor work with it?
Hi Laurel, You will actually need the USQ1102 Replacement motor and not the SQ1102 replacement motor. When replacing your motor you will need this Sta-Rite Dura Glas Seal Kit Pre 1998 or this Sta-Rite Dura Glas Seal Kit 1998 and after. If you don't know if your pump is from before or after 1998 then we put together this Video on How to Determine if your Sta-Rite Pump is Before or After 1998.
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Will the SQ1102 replace a STA-RITE P6E6D-205L / K48K2PA105C1? Thank you.
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What is the flow rate (gallons per minute) of a Century SQ1102, 1 HP pool pump.
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Hello Octavio. Flow rate (gallons per minute) information is tied to the Manufacturer/Model of the specific Pump. Single-speed motors, like the SQ1102, rotate at (3450rpm), but it is the impeller, diffuser and pump design that determines the flow rate. Please provide pump manufacturer/model information and the flow rate can be determined.
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I am interested in replacing my pool pump on my Anthony pool. I found your pump model Century 1.0 HP Square Flange 48Y Full Rate Motor - SQ1102. Is this a replacement for the pump I currently have? I am attaching a couple of images for you to look at. Thanx for your assistance. - Steve
The proper replacement for your pool pump motor 7-165199-05 is the...Century 1.0 HP Square Flange 56Y Full Rate EE Motor - B2841V1
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Old brass Anthony pump /motor runs very hot. Impossible to hold hand on it. Run capacitor leaked, foam melted, but still measured ok. Paint blackened. Do I need to replace the motor? Or capacitor? What is the correct replacement for motor and seals if I do?
Pump is AR206-L, Anthony metal filter 51sf. Label on the motor K48L2PA105, 115/230v, kw1.1 HP 1.5. SF 1.1, 16.0/8.0Amps, Frame 48Y. 3450rpm
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Hi Edward, it might be time to replace your old K48L2PA105 with this 1.0 HP Full Rate Motor - QC1102 on your Anthony Centrifugal Pool Pump. We recommend also replacing the motor shaft seal with this OEM shaft seal as well as the seal plate o-ring and the diffuser seal ring. Be sure to put some lubricant on the new o-rings to keep them leak-free for a long time.
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i believe i have a sta rite pool pump model p2ra5e-181l from what I can read on label, the motor has gone bad, would this motor work to replace? Do i need a 56y or 48y how would i determine the difference?
Hi Tim, it looks like you may not have the original motor on that pump - this Century 1.0 HP Square Flange 48Y Up Rate Motor - USQ1102 would be the same as the motor that was originally there. The 48 and 56 barrel sizes are interchangeable as long as the frame shape matches, which this one does. See our article on What Does My Pump Motor’s Frame (FR) Rating Mean? for a better explanation. Manufacturers have slowly but surely started to include a rubber gap filler in 48-frame motors to make it fit when replacing a 56-frame motor, since the 48-frame motors are 1" smaller in diameter. It will be a perfect replacement!
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You are correct, we had the motor replaced about 10 years ago and this is what was put on. Thanks for your reply!
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I have a Century SQ1102 1HP pump motor. Just purchased APKC1046/GOKIT5 repair kit based on my search. Before I get to it, I just want to double check that this is the correct repair kit for Century SQ1102 1HP pump motor. Thanks for the input.
hello guys, I have a Sta-Rite Max E Glas II pool pump model number P4E6E-151L. It is a 1 HP pump, square flange, 48 Y body. the pump has died. Would this motor be a good replacement for my pump. Please help!
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Hello Joel, the correct single speed replacement motor options for the original Sta Rite Max E Glass pump model P4E6E-151L are the QC1102 or the B2841V1. We also recommend replacing the seals and gaskets when replacing a pool pump motor. Here are the possible kits you can use for your pump. They are based on the year manufactured.
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Is this motor the same as the attached rating plate photo?
Hello Jim, yes this is the correct motor replacement for your motor model number c48l2pa105c4. 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 we put together that should assist you with that process.
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