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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My pump makes a loud high pitched screaming noise when running. The pump moves the water well but the noise is very loud. Would replacing the seals eliminate my noise problem?
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What is the part number and bearing type for motor number ST1102? I can find the motor and I can find individual parts such as seals and bearings but I cannot find bearing listed for specific motors.at your website.
Regards, Tom
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Hello Tom - The ST1102 would require two 203 bearings.
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The capacitor in my pool pump is suspect. The motor hums when turned on and is free to turn, not frozen or jammed. There is no marking on the capacitor so I can't evaluate it without knowing the capacitance value. The pump is a WMC AT 1800 that uses a magnetek century/centurion 1 HP motor. The label is badly faded but as near as I can tell the motor part no. is B-184981.21 and the cat No. is 8226SE type CX. Can you help me determine the capacitor value?
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Based on the motor number you provided B-184981-21 the run capacitor is a 25MFD 370V. You can call Century at 866.887.5216 to verify.
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I have a Hayward Super pump, 1H.P. motor, Model C48K2N143, 3450 rpm serial 8L95, frame 56-J. What is the correct motor, and what else do I need to install the motor ?
Clyde
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1102 AO Smith motors say ST1102 or UST1102 with a difference in price, are they interchangeable or what is the difference? have an old Hayward Super pump attached to it, old motor is CL48L2N133, pump in SX1610
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Hi Phil, The UST1102 and ST1102 are not interchangeable the ST1102 is a full rate motor and the UST1102 is an uprate motor. Could you email us your service factor (sf), amps, volts and HP off of your motor label, this would let us know which motor you need.
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I need to replace st 1102 motor c48l2n134c2 what do I order
Hayward pool pump
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The ST1102 is just the replacement motor. If you need to replace the entire pool pump then we would need the complete Hayward pump model. That model number is usually located on a small rectangular label on the pump housing and for the Hayward models it begins with an "SP".
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What size 0-ring/gasket is needed to seal connection between motor and housing? How can I tell from the label?
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Hi Bill, We would need to know the model of the pump housing in order to get you the replacement o-rings/gasket. If you can reply with that information I can help you locate those parts.
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Hi
I have this kind of pump k48l2n105
My question is what pump is Mach the one I have ? And what about if I go with the cheapest 1 hp that you guys have
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Hi Feras, The A.O. Smith 1 HP Full Rate Round Flange Motor (ST1102) can be replace the A.O. Smith 1 HP Full Rate Round Flange Energy Efficient Motor (CT1102) which would be the direct replacement for the MOD K48L2N105 motor. The ST1102 is cheaper up front but will cost more to operate than the CT1102 motor.
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IS US SEAL 200 THE CORRECT SHAFT SEAL FOR ST1102 PUMP MOTOR
I ALSO HAVE A 201 PUMP SEAL
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Hi Mitch, We would need to know the manufacture and model of the pump housing that the motor connects to in order to confirm which shaft seal is needed.
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I have an AO Smith ST1102 motor model # C48L2N134C2 which has a base on it. It is flange mounted to a Hayward pump.
Does the motor come with a base?
Thanks
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The motor does not come with a base so you'd need to take the base off the old one.
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Hi, my question is..i have a Magnetec Century Centurion SP1610-Z-1-BEP, Part # 8-182260-C4, It has a Leslies Pool label Hydromax 2, Best replacement 1hp motor ?
Thank you,
Jeff
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Hello, Jeff. You may use the Motor 56j Thrd Full Ee 1hp (b654) PART#5222AX or the A.O. Smith 1 HP Full Rate Round Flange Motor PART#ST1102. Do not forget to replace the SHAFT SEAL 201 (GENERIC) PART#5110-11 anytime you replace the motor. You may use the Leslie's Hydromax II Parts diagram for any other parts you may need.
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We have a Hayward pump housing and are looking to buy this ST1102 replacement motor. Can you tell us which seal we need to order, please?
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The best way to determine the correct pump seal would be to identify the PUMP you have. The most common seal for Hayward pumps is the SHAFT SEAL 201 (GENERIC). Please verify the pump you have to ensure you are selecting the correct shaft seal.
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We have a Hayward pump housing and are looking to buy this ST1102 replacement motor. Can you tell us which seal we need to order, please?
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The best way to determine the correct pump seal would be to identify the PUMP you have. The most common seal for Hayward pumps is the SHAFT SEAL 201 (GENERIC). Please verify the pump you have to ensure you are selecting the correct shaft seal.
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What is the flow rating on this pump in GPM?
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This MOTOR does not have a GPM rating as found on pumps. The specs on this motor are: A.O. SMITH, ST1102, B128, HP 1.0, RPM 3450, Volts 230/115, Frame Size M56J, Phase 1, Motor Type CX, Frequency 60.
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I have AO Smith ST1102 1HP C48L2N134C2 MOTOR AND THE START UP CAPACITOR HAS GONE OUT ON IT AND I CANNOT READ THE MARKINGS. DO YOU HAVE THE RIGHT SIZE CAPACITOR FOR THIS MOTOR?
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I need to replace the motor on my jandy jhp1.o pool pumps Stealth. The motor is labeled ST1102 115/230 rpm 3450. What gaskets etc. would I need to replace.
Thanks
Dave
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You may use the Tune Up Kit Jandy JHP + JHPU Pump Series - GOKIT77 . To view the complete Jandy Stealth Original (2006 and Prior) JHP & JHPU Parts Diagram, click here.
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I have a A.O Smith ST1102 pump. when I shut the switch on the outside electric panel, the breaker inside the garage also switches off. What would solve this problem. The pump starts after it sets for about 15 min.s and will run for hours with no problem. motor stays cool to the touch.
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Hi, Steve. We can troubleshoot your motor using the info in our Pool Motor Troubleshooting Blog.
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We need to replace our century pool motor. Here are the specs on the side part#184981 Fr U56J hp 1.0 sf 1.0 rpm 3450 volts 230/115 amp 6.9/12.0 Will this pump be a proper replacement?
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Our pump has power when you turn it on, but it does not spin. It never fully comes on then shuts off. It's the AO Smith c48l2n134b1, by Hayward.
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Is this replacement for: C48L2N134C2?
I am pretty handy and hope to change it myself. The current pump has gotten really loud (suspect bearings).
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This ST1102 is the correct motor replacement for you.
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We're switching out our current ST1102 with a new ST1102, so we shouldn't need different gaskets or seals - correct?
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Hi, AmAtHome. Yes, you will need a new pump shaft seal and gaskets for your pump. To locate the correct seal and gaskets, you will need to provide us with the pump housing model.
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I have a Jacuzzi Magnum Force pump with an AO Smith 1.0 HP motor (Part #7-184948-22) Type: CX, Volts: 230/115, RPM: 3450 and it sounds awful (bearings are shot after 13 years). Do you sell a suitable replacement motor and if so, do I need to buy anything other than the motor to replace it?
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I have a Century T1102 Model C48L2DB11 1 HP frame 56J 3450 rpm motor on my water well
can you please tell me which motor I need to replace it with ? Thanks
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I need help finding a wet to dry seal for hayward sp2607x10. Thank you!! I will be getting a ust1102 pump for the hayward pool pump so I need a seal that would fit both.
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Hi, Is this the right motor to replace my AO Smith C48A95A06? What else will I need to install the new pump?
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My Centurion 1081 pump has shorted out. Is the ST1102 pump the correct replacement pump for a motor with part number 8-182260-04 and housing from Hayward SP LE40014? It is a six hole configuration.
Should I replace all parts except for the housing?
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Hi, Edna. This ST1102 motor is the correct replacement. You will also need to get the Tune Up Kit - GOKIT2 or GOKIT2SALT.
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I found my motor but its in inch too long .. it hits my house and buzzez the wall model ST1102 FR56j 1hp MOD c48L2N134C2 is there one thats shorter than 12'' that fits my hayward flo max pump?
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Hello, I currently have a century ust1102 with model #C48K2N143C1C (picture attached). It's 3 years old and on it's way out. I want to replace it with this motor (st1102 made in mexico from your website). Would this work? And what seal kit would I need? Thank you so much
No, unfortunately this motor is not a match to the UST1102 as it actually is a stronger motor and in order to cross reference the correct seal kit we will need the model name or number of the front pump housing that the motor bolts to. If you are not sure of that model you can always email pictures of it to upload@inyopools.com so we can confirm for you.
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Thank you, the pump is a Hayward SP2607X10.
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After a recent power outage, motor is making a loud buzzing noise. Seems to still work. Is there a way to correct this issue?
The buzzing noise is likely a bad capacitor; the replacement start capacitor for the ST1102 is the START CAPACITOR, 161-193 MFD (610807-002)
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Can I replace a bad pool motor that is "uprated " with the same HP fully rated without changing impeller or any other pump parts ?
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Hi. Yes, you can as long as the Total HP is equal or greater.
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I need to replace a pool pump motor. I have attached a photo of the one that is bad. Will the A.O. Smith 1 HP Round Flange 56J Full Rate Motor - ST1102 work as a substitute? Is there anything else I need to consider prior to ordering this pump, if it will interchange with my bad one?
Yes this would be the correct single speed replacement motor. We recommend also replacing the seals and gaskets however in order to confirm which seal kit that you need you will need to know the model name or number of the front pump housing that the motor attaches to. If you cannot locate that information then you can always email us images of it to upload@inyopools.com we can review and further advise.
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I need to replace my pool pump motor, sounds like the bearings are going, I believe I replace it with the st1102. Attached are pictures of the motor and pump, I am not sure which components I need to update the pump. I am having trouble with the pump leaking around the gasket area. So, need part advice on that as well.
Hello, I have an old American Products pump model # 382204 serial# 14980. My pool motor has failed and I need a replacement. Can't read the model # it is 1 hp 3450 rpm type c.
Is this enough info
Do you have information on the front half of your pump? The best place to find your pump model information is on the pump housing tag. Pool pump manufacturers label each housing with make and model information as well as serial numbers. The pump model number is the golden ticket to finding the proper tune-up kit, so we will want to find that most of all. The tag is usually placed on the side of the strainer basket or near the discharge port for easy access. Model number formats vary depending on the manufacturer but should be marked clearly.https://www.inyopools.com/Blog/pool-parts-101-the-difference-between-a-pump-and-a-motor http://www.inyopools.com/Blog/finding-the-tune-up-kit-for-your-pool-pump/
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Just bought st1102 century motor. On the wiring, which wire to L1 and L2. Brown and black wires
Hi, Mark. We will need to confirm the input voltage. Use our How To Wire A Pool Pump guide as a reference.
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I have a hayward head with smith motor model#C48L2N134C2 When I put it in the search box it brings me to a replacement that is round and my is a square flange. What is the proper pump model to replace it?
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Hi John, yes this is the correct replacement motor for your motor model C48L2N134C2. You may have a plastic square flange bolted to the round motor face. 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 am putting in a solar system on my roof which is about 22' above my pump. Is there going to be an issue with pumping to this height?
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Hi Jeff, there are a few variables to consider when sizing a pool pump. Here is a guide that we put together called "How to Size a Pool Pump for Your In-Ground Pool" that may assist. You may also want to consider having a site evaluation performed by a solar company or a CPC(certified pool contractor)
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We need to replace our Hayward Super pump. We cannot read the information on the pump itself cause its so old its not legible. The model number looks like C48L2N131A1 SER 8K93. Can you please tell me which replacement would be correct? what accessories would I also need? attached are 2 photos.
Thank you.
We have the ST1102 motor, and need to replace our current Tork DTU40 pool timer. Do you recommend a specific pool timer based on the 115/230 voltage?
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If you are wiring the pump 115V then go with this T101 115V Pool Timer and if your are wiring the pump 230V then go with this T104 230V Pool Timer
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I have this motor model, it's about 5YO. Tried starting it today and it only buzzes, no suction at all. Is there a capacitor to check? If not any suggestions other than taking it apart and cleaning it?
Thanks.
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Hi Luke, this could be a sign that the capacitor has failed or is failing. Here is a guide that we created called "How to Test a Pool Pump Capacitor" that may assist you.
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is the ST1102 the correct replacement pump for my 15 yr old-ish Leslies Pools Hyrdamax II (is this also the hayward super pump?) - here's the details form pump motor label
Leslie’s Hydromax II – also Hayward Super Pump?
Magnetek Century Centurion 1hp Model# 182260
Model/Part# 8-182260-04
Volt 208-230/115
SF or AMPS? 6.4-5.9/11.8
SF Service Factor 1.4
Frame X56J
Hi John, yes this ST1102 is the correct single-speed replacement motor for the motor part number 182260. If this is the original motor on your Leslies Hydromax II pump then the seal kit for a chlorine swimming pool is the GOKIT2 and for a saltwater pool is the GOKIT2SALT.
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Do I need to buy a gasket separately?
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Hi Carla, 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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Is this a replacement for c48k2n143b1?
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Hi Jeremy, the correct single speed replacement motor for your motor model c48k2n143b1 is the UST1102. 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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Hello, is this the correct replacement for C48L2N134C2? Also, what seal pack do I need to purchase for salt water systems?
Thank you
Yes, this is the correct replacement motor for the motor included in your photo. You will also need a Hayward Super Pump Salt Water 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 I have an old wmc pump at5200 will this replacement motor work with my model
Hello Bruce. According to the information you provided, the current motor has a total HP of 1.5. The ST1102, which is a full rated motor, has a total HP of 1.5. An alternative motor, the up-rated UST1152 also has a total HP of 1.5. The UST1152 is a less expensive alternative. When replacing the motor, the manufacturer also recommends replacing the motor shaft seal, seal plate gasket, and o-rings. The pump model AT5200 is very similar to the Hayward Super Pump. The GOKIT3 contains all these necessary parts and is compatible with the AT5200. Tune Up Kit Hayward Super Pump - GOKIT3 Century 1.5 HP Round Flange 56J Up Rate Motor - UST1152
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Is this the correct replacement for this pump?
No, the correct replacement is part number 5222AX.
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Are the attachment dimensions same as AO Smith 7-196261-24 1 hp about 3000 gallons /minute flow - its for a waterfall
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Hello Don. The Century Motors 1.0 HP Full Rate Motor model B2848 is the compatible replacement for the A.O. Smith Motor model 7-196261-24. The gallons per minute flow rate is determined by the pump/impeller and not the motor. Century 1.0 HP Square Flange 56Y Full Rate Motor - B2848
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Which capacitors do I need for this motor?
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Hi Clarence, your ST1102 motor only has this Start Capacitor 161-193 MFD - BC-161.
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My pool motor is humming. I think i need a new capacitor. If not, i want a new motor. I will send you a copy of the info off the motor. It is a magnum force pump. Can you tell me what all i need ? Including capacitor and/or motor and/or pump ? Thanks! Kevin Chason
Hello Kevin. Century motors 7-184948-22 (from photo) cross-references to the Century Motors UST1102. The Start Capacitor 161-193 MFD - BC-161 is compatible with the motor UST1102. Please confirm Voltage (110-125V) and Microfarad (161-193 uF, MFD) ratings with the current capacitor. The Century 1.0 HP Round Flange 56J Up Rate Motor - UST1102 is the direct motor replacement. The Tune Up Kit Carvin/Jacuzzi Magnum Series - GOKIT14 contains the necessary seals and gaskets for the motor replacement. The PowerFlo Matrix Pump 1 HP - SP1592 - W3SP1592 would be the equivalent replacement pump.
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