We got home last night from a short vacation. So today I was resting up from the vacation & piddling in the shop. This afternoon I decided to mow the yard. I came in the shop for a break & could smell smoke from an electrical source. I could also see it in sun rays. I traced it to the air compressor motor. The overload button on the motor was tripped. The breaker was not tripped. I could not find any problems, so I pushed the reset buttom & turned the power back on. The motor ran fine. Some dust came out of the motor when it started. I got a flashlight & looked inside the motor. The bottom 1/3 of the windings are black from overheating.
What would cause this? This is an 80 gallon 2 stage CH compressor that is less than 1 year old.
What is involved in converting it to 3 phase? I have a 3 phase motor.
I do not know how the pressure switch connects with a starter.