A secondary landing would be designated by the fire system in case of fire at the lobby level. Elevator lights and accessories will be on a separate fused disconnect and readily available to inside the door of the mechanical room. On both new and remodeling installations, premium quality heavy duty door operators and track assemblies shall be specified to provide high performance operation. All tracks shall be steel. All roller guides shall consist of three sound reducing wheels and shall be precision type ball bearing steel with Durabond polyurethane tires.
Roller guides shallbe held in contact with the rail by means of adjustable devices.
Roller guides shall run on dry unlubricated guide rails. Car rollers shall be a minimum of six inches in diameter. Counterweight rollers shall be a minimum of three inches in diameter. Elevator car doors are to be protected by full door infrared reversal devices with multiple beams that cover at least every six inch area of the opening. Various types will be required depending on location.