Trying to wire a 1/3 hp 2 speed electrical motor.

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Old 08-03-11, 12:22 PM
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Trying to wire a 1/3 hp 2 speed electrical motor.

I am trying to figure out how to wire a small 1/3 hp Westinghouse electrical motor. It has 4 wires; black, red, yellow, and green. The motor is type # 123D17-1. It is 120v and 60 hz and 4.5 amps. It is labeled on the side with: SERT75. The Westinghouse part # is 322P437. I want to hook it up to run at either speed and to turn on and off. I don't not care about reversing the direction. I was looking at a SPDT switch with an off position in the middle. How would I wire it? Or is there a better way? Thanks in advance. Jeffrey13
 
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Old 08-03-11, 12:50 PM
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Are you sure it's a green wire and not a blue wire? I ask because black, red, yellow, blue is a standard color set for a single phase motor. Do you know for sure it's a two speed motor?
 
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Old 08-03-11, 01:10 PM
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I do not get a hit on Google for the part number. Is this a motor you bought new or did it come off of a piece of equipment. If the latter what did it come off of. Was that a 2 speed device?
 
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Old 08-03-11, 01:13 PM
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Yes it is blue and not green and No I am not sure it is a 2 speed motor. I was just told that.
 
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Old 08-03-11, 01:16 PM
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It came off some type of a ceiling ventilation fan.
 
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Old 08-03-11, 01:31 PM
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Okay based on the colors it is probably a single-phase, single-speed, reversible motor.

To make it rotate clockwise, hook the blue and black wires to the incoming hot wire; hook the yellow and red wires to the incoming neutral wire.

To make it rotate counterclockwise, hook the blue and red wires to the incoming hot wire; hook the yellow and black wires to the incoming neutral wire.

Ground wire goes to a grounding lug/screw somewhere on the metal frame.
 
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Old 08-03-11, 04:07 PM
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Thanks so much. I will try it tomorrow. jwr
 
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