Quote Originally Posted by polyglot View Post
The pump uses natural oils on felt discs for lubrication and it turns to gum with age. Get the pump out, clean all the gum off the bearings and re-lube it; it'll be fine.
I turned on the Jobo this afternoon (Sunday) and it is pumping water around the machine without a problem. Which is odd considering the lack of operation on May 31st. Perhaps the pump un-seized due to warmer conditions...