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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how do i get the inpeller off my 1.5 hp pentair pump
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We have a great Video on How to Replace a Pool Pump Impeller which goes into full detail on how to remove your impeller.
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Will this motor fit my older Anthony bronze pool pump. If yes, what is your return policy if it doesn't fit in the space available? Thanks
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Hi John, If you have the Anthony ASAC Pump then this motor can be used with that pump. However, if you can provide the motor's part, cat or mod # I can confirm which motor you need as a replacement.
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Will this work for replacing my MagneTek Centurion motor B750 8-164718-02 1.5 HP FR=N56C ? It is attached to Purex equipment.
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Hi Craig, Yes. This motor can be used as a replacement for p/n 8-164718-02.
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I have a PAC FAB Hydropump with a 1hp Goulds motor part # 8-152540-21. I need an external capacitor but the number in unreadable. do you have one or could you provide me a part #? Also, will the 1.5 Hp (b123) replace my motor.
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The capacitor for that motor is part number 5270-14, and yes, your B123 will replace your current motor but you would also have to upgrade your impeller as well, part number 5000-3049.
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i have a 1993 centurion switchless motor HP1.2, SF1.60, fr K56C, rpm 3450, time continuouis motor that will not spin. i hear the the power getting to it but it will not spin. im looking form a pump to replace this one for a pond/fountain. any suggestions please i need asap
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If you have the pump model and the motor part or model number I can help you with the motor and shaft seal replacement. If you are wanting the complete pump I just need the pump model. If you do not have this information please attach a picture so I can identify it for you.
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Looking to replace a motor...how do I know if keyed or not without disconnecting? I have a magnatek 1.5 hp. From Data label on motor: (part 10-164300-23) SF 1.3 / 3450 RPM/ Frame N56C/Serial B84-24/Type CX/CAT B123
Thanks
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Hello, The motor that replaces is a Motor 56c Keyed Full 1.5 Hp (b123)
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I have a MagneTeK Century Electric Pool and Spa Duty; 1081 pool pump duty mount horizontal with vent holes down; Thermally protected KA; HP 1.5; SF 1.3; Volts 230/115 Amps; SFA 18.4/9.2; Frame N56C; Time CONT; RPM 3450; CAT B123; Part 8-461300-20; AMB 50 degree C; Insul class B; Form K JM; Hz 60; Encl DP; PH 1; Code H; Serial BG8-113 that works but I would like to replace with a variable speed motor to save electricity. Can you point me to a replacement? Thank you.
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Hi, David D. Unfortunately, there is not a replacement variable speed motor that will replace this B123 motor.
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I have an advantage manufacturing motor for residential use 1.5 up, 3500 rpm 60 hz, 56 fr, 115/230 volt would this work
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Hi, Omar. Unfortunately, I unable to confirm using the info provided. Please provide the motor # or the SF #.
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I have a failed Magnetek Century Centurion B123, Part B 164300-23, FR N56C, Type CX, pump.
Is what you have the correct replacement?
I have heard that brushless permanent magnet motors have higher efficiency and reliability than the old
coil motors. Is there a possibility for me to get one of the newer design?
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Hello Roger. The correct replacement for your Magnetek Century Centurion Motor model B123 is the Century Motors model B123. Motor 56c Keyed Full 1.5 Hp (b123) Brushless permanent magnet motors (variable speed) are more energy-efficient than conventional copper-wound motors. They are totally enclosed which helps prevent moisture from entering the motor, lending them to a longer life span. According to Regal/Beloit (manufacturer of Century/A. O. Smith copper wound and variable speed motors), there is currently no brushless permanent magnet motor available as a direct replacement for the Century Motors B123 motor.
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