- Joined
- Dec 18, 2013
- Messages
- 87
Cincinnati 2MLWhat kind of machine are we dealing with here?
Post a picture of the tag on your motor.
I see your in Michigan. I probably have a good used contactor with overloads.......if you pay for shipping
Main motor
Overarm motor
It was originally wired for 440. I rewired for 220. I am unsure if the machine even has heaters as it looks like they have all been jumped. I believe this is the case with the overarm.Do you know the history of the machine? If it's a 3 phase machine it's likely it could be wired either 220V or 440V. If it was originally wired 440 and is now running on 220 it's likely the overloads (heaters) are too small. I had a similar problem with a Bridgeport. It was originally run on 440 and later changed over to 220. It would run a few minutes, or sometimes only a few seconds then quit. A little investigation found whoever changed over the wiring hadn't replaced the overloads. At 220V the overloads were undersized and couldn't handle the current.
I would also check the coils for the contactors. If they're 440 coils they likely won't pull in or hold the contactors when run on 220 volts.
I have already done this and the coil seems to lock up solidly.Take the wires off the coil. Wire in a pigtail that you can plug into a wall to energize the coil with the coil energized use your meter to check the far right set of contacts on the motor starter. These appear to be the latch circuit. A latch circuit is what holds the contactor on when the on push button is not depressed.