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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If this motor is installed without the two speed switch, and hooked up to an existing single speed timer will it function as a single speed motor?
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Yes, without the switch it will stay at high speed the whole time.
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If my old pump is already wired up to a timer switch that controls the high/low do I still need to purchase a separate hi/low switch?
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Hello, You would not need the manual switch if you already have a dual speed timer.
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I am trying to match up my existing with this, I think its the same one. Attached are photos of the labels, let me know if this is the correct part before I place the order. What is the warranty on this part as well and can it be returned if it does not fit my pump?
Hello, This will be the correct motor you will need. http://www.inyopools.com/Products/07501352022130.htm?Keywords=b985
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What is the expected life of this motor ? How do I know if the motor went bad or the pump?
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Hi Maynor, I would say on average the life expectancy of a pool pump motor is 7-10 years. 90% of the time the issue is a bad motor, typical signs are running loud, humming, running hot or not turning on at all.
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thanks can you send me the info for the rest of the items that I would need for the pump, Diffuser O-ring, Shaft seal so that I can order all at once please
Hi Maynor, It looks like you have a Sta-Rite Dura Glas and Based on the year your pump was manufactured You will also need this Sta-Rite Seal Kit Pre 1998 or this Sta-Rite Seal Kit 1998 and After. If you are not sure if your pump is from before or after 1998, then we put together this Video on How to Determine. Could you also send a close up photo of the motor label which shows the amps, HP, etc.. so we can suggest the proper replacement motor.
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I’ve had this motor less than 7 years. All of the sudden it’s tripping the internal circuit when i turn it on. I have replaced the capacitor. What could be causing this?
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Assuming the breaker is still in good shape, the phase windings have likely failed with the motor. In that case, the motor needs to be replaced.
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I need a motor, shaft seal kit, and anything else you typically replace when a motor goes bad. Please see attached photos of the motor and the pump.
Thank you for contacting Inyo Pools, Century 2.0 HP Square Flange 48Y Dual Speed Up Rate Motor - UQS1202R and GOKIT32 should be the right parts for you.
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Can you tell me the difference between the Century B985 and the B2984? The B2984 says high efficiency but uses 11.0/1.8 compared to the B985 which uses 10.0/3.5 amps is there just a savings on low?
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Hello John. The Century Motors model B985 is a 2.0 HP Up Rate Dual Speed Motor (2.2 THP). The Century Motors model B2984 is a 2.0 HP Full Rate Dual Speed Motor (2.6 THP). Horsepower (HP) X Service Factor (SF) = Total Horsepower (THP) The B985 Low-Speed HP is 0.33. The B2984 Low-Speed HP is 0.25. The difference in horsepowers accounts for the difference in amperage draw. B985 B2984
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.jpeg?format=jpg&scale=both&anchor=middlecenter&autorotate=true&mode=pad&width=650&height=650 "Century (A.O. Smith) Pool Pump Motor, 2.0-.33 HP, 1 Ph, 60 Hz, 230 V, 3600 RPM, Y56Y Frame, DP - B985")
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