Worked on a fan in the Umpqua River Lighthouse museum the other day… You see anything wrong with these pictures?
Years of dirt accumulation. Not to fear. One fan was a sealed unit and only needed to be cleaned. The other was “old school” and the motor was exposed to the dust…. Dead from all the dirt and dust caked inside the motor.
Another fun adventure…. We put some “pre-filters” in place to keep most of the dirt/dust out. Should be an easy job in the future….