Read blueprints to determine the equipment needed for installation Install elevator doors, cables, motors, and control systems Locate malfunctions in brakes, motors, switches, and control systems Connect electrical wiring to control panels and electric motors Use test equipment, such as ammeters and voltmeters, to diagnose problems Adjust counterweights, door mechanisms, and safety controls Test newly installed equipment to ensure that it meets specifications Comply with safety regulations and building codes Any other tasks assigned by superior