Electric Motor Problem

[rustydog]

I have a Dayton 3/4 hp thermally protected motor. It is an internal automatic Klixon protector.

The problem is that the motor turns over at about 40 RPM unloaded and will not turn over at all on the horizontal band saw it has been successfully running for 3 years.

There is no humming. There are no roasted coils and the bushings are in good shape and run freely. The slow speed is not fast enough to trip the start circuit switch.

Is this characteristic of a specific problem? .

 

[jumps4]

you may have a bad capacitor or centrifical start switch inside the motor. the motor switch could be just dirty contacts sawdust or something.
steve