« on: January 29, 2015, 11:56:22 AM »
I have an 809 that I bought from someone retiring. It has always run well for me. This past weekend I had some issues with air locks causing free wheeling. Whenever this occurred I would immediately shut the pump off. I then would find it would not restart and I would notice the fan would pulse when the switch was turned on, but it would not turn. The fan was magnetically held in place. After a few minutes (potentially as the motor cooled) it would run.
Is there a potential dead spot in the motor windings or could it be overheating?
We would have to see the motor and test it....but from what you said in the posting i would venture to guess the clearance on the impeller ID is too tight and its sticking on the shaft when it heats up. it could be tight from the molding process or you may have sugar buildup from not cleaning it out good enough.....easiest thing you can do is drill the impeller center section out with a 17/64" drill bit to give it more clearance.