Our elevators that run food and dishes between the dining room (one deck below) and the galley was having some major issues. The main issue being the sliding doors behind the opening door to the dumbwaiters were getting stuck and malfunctioning.
During service (putting the food out for a meal) one of our carts got jammed between the floors in the dumbwaiter. Below are pictures of the damage...AND a very good reason for people not to play with the equipment. You know those people who always think it's fun to squeeze into an elevator that's not supposed to carry people, then jump out at the other end and say BOO?
This cart was fairly new, and the elevators seem to go fairly slow (they only travel between two floors) and it seemed to crumple it up pretty bad. Look especially at the handle.