System Operating Features • Capacity & Speed: Retain existing elevator capacity and speed. • Travel: Retain existing floor-to-floor travel and rise. • Stops & Openings: Retain existing number of stops and openings. • Automatic Self-Leveling: Provide automatic self-leveling to bring the elevator car level with floor landings (+/- ¼”), correcting for over/under travel and belt stretch. • Group Control: Provide optimized response to hall calls using a modern dispatching system. 1.5.2 Machine Room Equipment • Controller: Install a new digital closed-loop microprocessor-based elevator control system. • Drive System: Install a new variable voltage, variable frequency regenerative drive system. • Gearless Machine: Replace the existing geared machine with a new gearless AC machine. • Brake: Provide an integral brake for uncontrolled motion protection. • Seismic Switch: Install a new seismic switch to meet code requirements. • Digital Positioning System: Provide a digital positioning system for accurate leveling. • Machine Room Wiring: Replace all machine room wiring as required. 1.5.3 Elevator Car • Door Operator: Install new closed-loop door operators for smooth, quiet, and reliable operation. • Infrared Door Protection: Install new solid-state infrared passenger protection devices. • Emergency Car Lighting: Provide new emergency car lighting with battery backup. • Car Wiring: Replace all car wiring and provide a new car top integration box. • Suspension Means: Install new suspension means (belts/ropes) as required. • Load Weighing Device: Provide a load weighing device for dispatching and hall call bypass. • Firefighter’s Service Cabinet: Install a new Phase II firefighter’s service operation cabinet. • Car Door Hardware & Rollers: Install new car door hardware and rollers. • Car Guide Rollers: Install new car roller guides and seismic retainer plates. • Car Door Finish: Install new brushed stainless-steel car door finish. • Cab Exhaust Blower: Provide new exhaust blower with sound isolation. • Toe Guard: Retain or replace as necessary to meet code...
