I have the 3650 and rewired it to 220/240v and it runs cooler and has better startup and power. I did still have some vibration . I noticed that the cooling fan was rotating off axis. I removed the end cover and found th set screw was sticking out of the ring about 3/8" and the fan was bent. Further looking, the set "bolt" was the same or longer on the start up clutch behind the fan. Both fasteners were in the same oreintation as to create an off balance.I shortened the fan screw to be flush and used a caliper to get the fan straight. I also replaced the clutch bolt with a setscrew that was also flush. It is now very balanced. This was not a good design but easily modified.
No announcement yet.