Old Polar 3d

The Motor for the polar vortex (bottom motor) is shot. Grinds, over heats and is broken.

Did you make sure the plate isn't pressed down too tight? I've had similar issues that were a result of too much friction caused by the plate being mounted too tight.

This was happening even with no plate. It caused the whole unit to overheat. Jon was nearly burnt feeling it. (This was when no one was running it)

I have spare motors… which one is it?

The polar vortex plate motor I believe