Huebsch JTD32DG Dryer Won’t Start

Operations reported the Huebsch JTD32DG Dryer wouldn’t start. Investigation revealed the unit had power and quarters could be used to add time to the controller, but when start is pushed, although the controller counts down the time as if its running, the tumbler doesn’t turn and the burner doesn’t ignite.

When browsing the documentation in the Maintenance office paper file, I noticed the «Preventative Maintenance» section recommended regular removal of lint from the machine by dis-assembly of the unit’s panels. I had noticed when examining the machine initially a build op of lint behind the drum, so I decided to perform this maintenance. I ended up removing 2-1/2 tall kitchen bags of lint (plus some rat poop).

Tools Required for Lint Removal Disassembly:
Phillips driver (front panel)
T-15 driver (side panels)
5/16″ driver/ratchet (braces, ducts, and guards)
5/16″ wrench (braces, ducts, and guards)
adjustable wrench (for door removal)

I attempted to test the machine while the panels were off, but I kept getting the «Door Open» error on the controller. Turns out there are three switches that sense open/missing doors, panels, and components: (1) the front door switch, (2) the lint collector switch, (3) the motor guard panel switch. I missed this last one until the end.

Once cleaned out, I re-assembled the unit with same symptoms. Currently, I’m working with the wiring diagram (found in the paper file) to attempt to isolate the issue. Since the controller seems to be working normally, I’m focusing on the motor. It seems to me that the motor runs first and the sends a signal through the safety switches, which in turn allow the igniter to fire the unit up. If for some reason the motor fails, of course the tumbler won’t turn and nothing else will happen. I’m going to attempt to swap motors with the top unit to test this theory.

• Este debate fue modificado hace 1 mes, 1 semana por Ben Cheek.