Hi all -
I'm new to the forum - need your help with a question about a garage door opener electric motor that I removed from the Sears Lift Master opener.
Unfortunately I did not note the wiring before I disconnected it all (initially I had no intentions of saving the motor, but then I had second thoughts).
THe motor is rated at 115V - it's Chamberlain. It has three wires: white, red and blue. Connecting the power directly to white and either red or blue wires makes the motor humm, but it will not spin. I thought that maybe it needs a starting capacitor to get it going, so I hooked up the saved capacitor (230V 53-64mFd) in series with the blue wire and connected the white cable to the white lead of the power cable - it made a softer humm but still it would not start...
Measuring resistance of the three wires between the following pairs:
Blue and Red - 7.8 ohms
white and red - 3.2 ohms
white and blue - 3.2 ohms
How should these three magic wires be connected to make this motor run...
Help me out plz -
Thanks,
James
I'm new to the forum - need your help with a question about a garage door opener electric motor that I removed from the Sears Lift Master opener.
Unfortunately I did not note the wiring before I disconnected it all (initially I had no intentions of saving the motor, but then I had second thoughts).
THe motor is rated at 115V - it's Chamberlain. It has three wires: white, red and blue. Connecting the power directly to white and either red or blue wires makes the motor humm, but it will not spin. I thought that maybe it needs a starting capacitor to get it going, so I hooked up the saved capacitor (230V 53-64mFd) in series with the blue wire and connected the white cable to the white lead of the power cable - it made a softer humm but still it would not start...
Measuring resistance of the three wires between the following pairs:
Blue and Red - 7.8 ohms
white and red - 3.2 ohms
white and blue - 3.2 ohms
How should these three magic wires be connected to make this motor run...
Thanks,
James