Serviceability is good, quality is better. Just like any box... must stay clean... but they always end up next to a fryer or breading station. The filter screen is easy to pull and clean. Recommend training the staff to pull it every two weeks.
Doors are well made except for the early model handles. They are push cart high and get hit repeatedly. Gaskets are a little pricy but easy to replace.
Mechanics aren't hard but like every other box out there they have their quirks.