A friend asked me to look at an exhaust fan.
The motor is probably 1/4 horse, and the fan blade is about 9" in diameter.
He thought it was "single phasing", but when I looked at it, it is a 110v single phase motor, with a frozen rotor shaft.
I put some automatic transmission fluid on the bearing journals, and hooked it up to my drill motor and gave it a spin to see if I could free it up.
That didn't work, but as it was hesitantly spinning, I saw one of the two wires (for the plug) touch the metal shroud it was mounted in, and the wire was sparking. It was a white spark.
I did it once more to be sure I wasn't just hungry os something, and it sparked again.
What kind of electircal energy was it producting? Just curious.
Thanks,
Gary
The motor is probably 1/4 horse, and the fan blade is about 9" in diameter.
He thought it was "single phasing", but when I looked at it, it is a 110v single phase motor, with a frozen rotor shaft.
I put some automatic transmission fluid on the bearing journals, and hooked it up to my drill motor and gave it a spin to see if I could free it up.
That didn't work, but as it was hesitantly spinning, I saw one of the two wires (for the plug) touch the metal shroud it was mounted in, and the wire was sparking. It was a white spark.
I did it once more to be sure I wasn't just hungry os something, and it sparked again.
What kind of electircal energy was it producting? Just curious.
Thanks,
Gary