I have been searching for wiring specifications for a Rotron motor and have been unable to find any documentation regarding the wiring of this 4 wire motor.

I assume two of the wires are for the capacitor which is stated on the motor as 4.0 MFD but am unsure which two wires should be used as the color codes are not standard nor marked.

Resistance between Red-Green is 27 ohms and Yellow-Blue is 44 ohms

Any help would be greatly appreciated. I've attached a few photos of the motor:

-r

 

Measure the windings, if equal, should not matter which winding is the start and run, if one is higher than the other, then this is the start and should have the cap in series.
Reverse one of the winding terminations to reverse.
Max.

 

Thank you for your response. I still need to get a 4 MFD cap but I tried both "windings" and both make the motor run, faster on the lesser (hotter) pair at 27 ohms, only need to give it a "push". Interesting that it will run in either direction depending on which way I manually start it.

When you say reverse one of the winding terminations, are you referring to the starter cap winding?

 

You have to use both windings to start properly, do not try it without cap, you can burn the motor our, did you take a resistance reading of each winding?
By reversing one winding you should reverse the motor, either winding will work.
At present if no cap, giving it a spin it will run in either direction.
Use a AC motor start cap only, in series with the highest resistance winding.
Max.

 

Thank you.