I have an Rheem outdoor A/C unit, I just replaced the motor and need help hooking up then new motor and capacitor. The new motor is a.O Smith 220 vAc. Single phase. My old capacitor was used on both the compressor itself and the fan motor. My new capacitor also only has 2(4posts) while the old had 3(four posts). Do I need an extra capacitor for the fan?

My old motor only had 3 wires while the new has 5, Green=ground, brown which it says goes on either side of the cap. A black that I am assuming goes to a relay
And a yellow??
I have 2 wires that went to the existing cap. Purple from the compressor and red from the incoming contactor. Where do they go on the new cap?

My question is where does the yellow go from the motor and where should I put the 2 previous wires that were on the cap. Should I get a second cap?

motor

brown------------0
brown------------0<------cap.

----------------------yellow
Line
----------------------Black
Any help from anyone on this would be greatly appricated.

Thanks

The two brown wires will go to the new capacitor,(and no others) the black will go to the contactor and the yellow will go to the "C" (with the red) on the old cap. The purple(will be connected to Herm.) will remain and the red will remain.
You will have two capacitors, one for compressor and one for fan motor

Quote:

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Originally Posted by SAMG

I have an Rheem outdoor A/C unit, I just replaced the motor and need help hooking up then new motor and capacitor. The new motor is a A.O Smith 220 vAc. Single phase. My old capacitor was used on both the compressor itself and the fan motor. My new capacitor also only has 2(4posts) while the old had 3(four posts). Do I need an extra capacitor for the fan?

My old motor only had 3 wires while the new has 5, Green=ground, brown which it says goes on either side of the cap. a black that i am assuming goes to a relay
And a yellow???
I have 2 wires that went to the existing cap. purple from the compressor and red from the incoming contactor. Where do they go on the new cap?

My question is where does the yellow go from the motor and where should i put the 2 previous wires that were on the cap. should I get a second cap?

motor

brown------------0
brown------------0<------cap.

----------------------yellow
Line
----------------------Black
Any help from anyone on this would be greatly appricated.

Thanks

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The shop says I need a dual cap. Do you know what mf. Size cap I need for the compressor?

acetc is correct. Two capacitors is usually the same as a dual-capacitor and would be in this case.

The old capacior has a common terminal and 2 likely different values of capacitances marked on the capacitor. There is usually room to mount both of them (old and new together) in the outside unit.

The dual capacitor is cheaper for the OEM. The old capacitor will have nothing connected on one of it's terminals.