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Your 3 phase unit should not have a capacitor. I'm guessing it's single phase. If it's a single capacitor than the compressor should not be going to it also. To test the motor, common to start plus common to run should equal the ohms you get between start and run. For instance, 1.2 ohms+ 2.2 ohms= 3.4 ohms. Follow the wiring diagram on the inside of the door, send model number!!
You can't run a 3-phase motor on 110V unless you use a 3-phase inverter. Depending on the size of your motor, these will probably run you around $150 for the least expensive type. Take a look at---
http://americanrotary.com/static-phase-converters.html
I do not have a diagram for you, but depending on the motor, I can tell you a couple of things. 1. All capacitors are wired in series with the start winding. Most multi-speed motors, that require capacitors, have two brown leads, along with the motor winding leads. If this is the scenario, then just connect line power to neutral and the speed you wish to use, and connect the two brown leads, one to each side of the capacitor. Hope this helps.
does it have capacitors on the motor (humped covers on top) If not then it may ot be a single phase. also on the motor name plate or on the inside cover of the connector box it should have wiring diaphragm that will tell you how to wire the motor, single phase motor will show 2 line connections and a three phase will show 3 line connections,,, line connections are represented by L-1 L-2 L-3 these mean incoming power.
if it has a brown/purple,and black wires and is a single phase motor, the purple and black are your 2 hot phase wires, and the brown goes to the motor capacitor and on other motor cap term that goes back to the purple phase wire
all you have to do is (a) open the connection box of the motor look for the two wires of the starting or running coil, inverse only one coil wire.(a) If there is no centrifugal switch in the rotor, try this it might help open the motor both end,change the direction of the shaft ,which i mean pulley side goes to fan side and fan side goes to pulley side and tighten all bolts.
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