Check for signs of corrosion or rust. Inspect for any physical damage to the enclosure. Ensure that all labels and warning signs are legible. OK p meets requirements; NG p insert number to identify comment on back of this Checklist; NA p not applicable. 2-2014, by permission of The American Society of Mechanical Engineers. Elevator maintenance is the inspection process of finding, diagnosing, and fixing issues that may cause elevator malfunction or breakdown. Internal Inspection Open. Home Resources Checklist Building Elevator Inspection Checklist Download this free checklist to ensure your elevators are free of hazards and compliant with regulations, and reduce maintenance costs.