- Joined
- Dec 7, 2018
- Messages
- 653
This is a single phase, 3 hp motor. At first I thought it was the drive belt because some smoke came out before it stopped. Upon inspection the contacts located at the top of the motor had some arcing present so those were changed out as was the large capacitor.
The unit fired back up and within 30 seconds of the start, smoke came pouring out of the vent where the belt can be changed out and before I could get to the switch I could see fire inside the vent coming down from the motor and the circuit breaker kicked open.
So what would cause that to happen? This is a knee mill and I had a 1/8” end mill cutting a small piece of aluminum. So I am trying to understand if it just happens from time to time or manufacturer’s defect. Motor has been in use since January. My use at most has been sporadic, I am guessing less than 24 hours of actually cutting with it over that period. It is a motor from Taiwan. Maybe it’s just one of those things where infant mortality occurred. I know electronics have those.
Thoughts or comments?
The unit fired back up and within 30 seconds of the start, smoke came pouring out of the vent where the belt can be changed out and before I could get to the switch I could see fire inside the vent coming down from the motor and the circuit breaker kicked open.
So what would cause that to happen? This is a knee mill and I had a 1/8” end mill cutting a small piece of aluminum. So I am trying to understand if it just happens from time to time or manufacturer’s defect. Motor has been in use since January. My use at most has been sporadic, I am guessing less than 24 hours of actually cutting with it over that period. It is a motor from Taiwan. Maybe it’s just one of those things where infant mortality occurred. I know electronics have those.
Thoughts or comments?