go to google and put in "colorado schindler 3300 maintenance manual"
you will find the MCP & inspectors guide which is useful for tests. You will never get through a test without these documents. Make sure to check/verify the time & date on each PM visit. The unit will lock up if you don't do this. Schindler sets it up this way because the belts have a time or run life span. I.e. that car is shutting down at 5 years or a million runs, I think.
Overall, they are okay but definitely not something you want to give full service on, it can eat your lunch and drive you crazy. each **** represents a portion of the safety string. Make sure it was a good installation before you proceed.