Can you convert it to 220V? It could just be you're reaching the boundaries of what it was meant to do. Switching to 220V will help it not work as hard and should push the boundaries out further.
I assume you don't have anything else running on your current 110 circuit it's on. If the 4512 is being starved for amperage, that will cause the overheating/circuit tripping.
I assume you don't have anything else running on your current 110 circuit it's on. If the 4512 is being starved for amperage, that will cause the overheating/circuit tripping.
