style="font-size:15px;"> ■ Car door interlock: A device having two related and interdependent functions, which are to prevent the operation of the driving machine by the normal operating device unless the car door is locked in the closed position; and to prevent the opening of the car door from inside the car unless the car is within the landing zone and is either stopped or being stopped.
■ Car door or gate electric contact: An electrical device, the function of which is to prevent operation of the driving machine by the normal operating device unless the car door or gate is in the closed position.
■ Overslung car frame: A car frame to which the hoisting rope fastenings or hoisting rope sheaves are attached to the crosshead or top member of the car frame.
■ Underslung car frame: A car frame to which the hoisting rope fastenings or hoisting rope sheaves are attached at or below the car platform.
■ Car lantern: An audible and visual signaling device located in a car to indicate the car is answering the call and the car’s intended direction of travel.
■ Car platform: The structure that forms the floor of the car and directly supports the load.
■ Compensating rope sheave switch: A device that automatically causes the electric power to be removed from the elevator driving-machine motor and brake when the compensating sheave approaches its upper or lower limit of travel.
■ Motion control: That portion of a control system that governs the acceleration, speed, retardation, and stopping of the moving member.
■ Operation control: That portion of a control system that initiates the starting, stopping, and direction of motion in response to a signal from an operating device.
■ Automatic operation: Operation control wherein the starting of the elevator car is effected in response to the momentary actuation of operating devices at the landing, and/or of operating devices in the car identified with the landings, and/or in response to an automatic starting mechanism, and wherein the car is stopped automatically at the landings.
■ Motion controller: An operative unit comprising a device or group of devices for actuating the moving member.
■ Motor controller: The operative units of a motion control system comprising the starter devices and power conversion equipment required to drive an electric motor.
■ Elevator control room: An enclosed control space outside the hoistway, intended for full bodily entry, which contains the motor controller. The room could also contain electrical and/or mechanical equipment used directly in connection with the elevator, but not the electric driving machine or the hydraulic machine.
■ Control system: The overall system governing the starting, stopping, direction of motion, acceleration, speed, and retardation of the moving member.
■ Designated level: The main floor or other floor level that best serves the needs of emergency personnel for firefighting or rescue purposes identified by the building code or fire authority.
■ Displacement switch: A device actuated by the displacement of the counterweight, at any point in the hoistway, to provide a signal that the counterweight has moved from its normal lane of travel or has left its guide rails.
■ Door or gate electric contact: An electrical device, the function of which is to prevent operation of the driving machine by the normal operating device unless the door or gate is in the closed position.
■ Electrical/electronic/programmable electronic (E/E/PE): Based on electrical (E) and/or electronic (E) and/or programmable electronic (PE) technology.
■ Hydraulic elevator: A power elevator in which the energy is applied, by means of a liquid under pressure, in a hydraulic jack.
■ Roped hydraulic elevator: A hydraulic elevator in which the energy is applied by a roped-hydraulic driving machine.
■ Hoistway door or gate locking device: A device that secures a hoistway door or gate in the closed position and prevents it from being opened from the landing side except under certain specified conditions.
■ Hydraulic jack: A unit consisting of a cylinder equipped with a plunger (ram) or piston, which applies the energy provided by a liquid under pressure.
■ Driving machine: The power unit that applies the energy necessary to drive an elevator.
■ Geared driving machine: A direct driving machine in which the energy is transmitted from the motor to the driving sheave, drum, or shaft through gearing.
■ Traction machine: A direct driving machine in which the motion of a car is obtained through friction between the suspension ropes and a traction sheave.
■ Gearless traction machine: A traction machine, without intermediate gearing, that has the traction sheave and the brake drum mounted directly on the motor shaft.
■ Hydraulic driving machine: A driving machine in which the energy is provided by a hydraulic machine and applied by a hydraulic jack.
■ Direct hydraulic driving machine: A hydraulic driving machine in which the driving member of the hydraulic jack is directly attached to the car frame or platform.
■ Roped-hydraulic driving machine: A hydraulic driving machine in which the driving member of the hydraulic jack is connected to the car by wire ropes or indirectly coupled to the car by means of wire ropes and sheaves. It includes multiplying sheaves, if any, and their guides.
■ Elevator machine room: An enclosed machinery space outside the hoistway, intended for full bodily entry, which contains the electric driving machine or the hydraulic machine. The room could also contain electrical and/or mechanical equipment used directly in connection with the elevator.
■ Maintained pressure: The hydraulic pressure between the pressure source and the control valves of a maintained pressure hydraulic elevator.
■ Compensation means: The method by which unbalanced forces due to suspension means are reduced, utilizing one or more compensation members and their terminations.
■ Elevator nonstop switch: A switch that, when operated, will prevent the elevator from making registered landing stops.
■ Inspection operation: A special case of continuous-pressure operation used for troubleshooting, maintenance, repair, adjustments, rescue, and inspection.
■ Phase I recall operation: The operation of an elevator where it is automatically or manually recalled to the recall level and removed from normal service because of activation of firefighters’ emergency operation.
■ Phase II emergency in-car operation: The operation of an elevator by firefighters where the elevator is under their control.
■ Elevator pit: The portion of a hoistway extending from the sill level of the
