I have a 20 year old Sears compresor that sometimes would not start, just ssort of hum and pop the motor breaker. It was complicated by a loose pump pully that would jam. That's fixed now. Now, when power is
applied, the motor runs slow for several seconds, then the motor breaker pops, even with the belt removed. Applying power turns the motor slowly but the shaft is not binding. I disconneced what I thought was the start capicator, on top of the motor, 704 uf, 110v and tried running the motor. It still started to turn slowly with the cap removed, which makes me wonder if this is a run capicitor. Also, I removed the cap to test it with an ohmmeter, and it acts normally, no shorts or opens, resistance builds.
The motor is 110v, 17amp, 3450rpm, a case like a 1/3 or 1/2 horse size.
Do you think replacing the cap will solve the problem or is it something more serious?
applied, the motor runs slow for several seconds, then the motor breaker pops, even with the belt removed. Applying power turns the motor slowly but the shaft is not binding. I disconneced what I thought was the start capicator, on top of the motor, 704 uf, 110v and tried running the motor. It still started to turn slowly with the cap removed, which makes me wonder if this is a run capicitor. Also, I removed the cap to test it with an ohmmeter, and it acts normally, no shorts or opens, resistance builds.
The motor is 110v, 17amp, 3450rpm, a case like a 1/3 or 1/2 horse size.
Do you think replacing the cap will solve the problem or is it something more serious?