Compy's were turned off because of cracks in the frame of the mechanism that moved them across the track, instead of fixing it, they just turned it off.
Mama Ceradactylus was turned off because the cable used to move it back and forth kept coming off the track, instead of fixing it, they just turned it off.
At Kali, remember the logging truck that was stuck and teetering and as your raft came by, the logs on the back of the truck would swing out, then they found a crack in the frame and instead of fixing it, they just turned it off.
At Everest, the Yeti has a crack in its movable foundation, so instead of fixing it, they turned it off.
So it is all in the name of safety, that is the way they like to fix things at DAK, just turn it off and then you don't have to worry about it.