ASME A17.3-2020-pdf download

ASME A17.3-2020 pdf download.Safety Code for Existing Elevators and Escalators.
installation, existing: an installation that has been completed or is under construction prior to the effective date of this Code. installation, new: any installation not classified as an existing installation by definition, or an existing elevator, dumbwaiter, escalator, material lift, inclined lift, or moving walk moved to a new location subsequent to the effective date of this Code. intended car movement: controlled movement of an elevator car, including starting, leveling, running, and stopping, due to (a) operation control (b) motion control (c) continuous pressure on an operating device during inspection operation, inspection operation with open door circuits, or hoistway access operation. NOTE: “Stopping” includes movementofan elevatorcartowards rest once stopping is initiated and any movement ofan elevator car due to suspension system elasticity that occurs after the brake is set, since this movement was the result ofthe intended operation. interlock: see car door interlock and hoistway door inter- lock. labeled/marked: equipmentormaterial to which has been attached a label, symbol, or other identifying mark of an approved or accredited independent certifying organiza- tion, concerned with product evaluation, that maintains periodic inspection of production of labeled/marked equipment or material, and by whose labeling/marking the manufacturer indicates compliance with appropriate standards or performance in a specified manner. NOTE: For the purpose ofthis definition, accredited means that an organization has been evaluated and approved byan Author- ized Agency to operate a Certification/Listing program, and is designated as such in a publication of the Authorized Agency. landing, dumbwaiter: thatportion ofa floor, balcony, plat- form, or landingdoor used to discharge and receive mate- rials. landing, bottom terminal: the lowest landing served by the dumbwaiter that is equipped with a hoistway entrance.
worm-geared machine: a direct driving machine in which the energy from the motor is transmitted to the driving sheave or drum through worm gearing. driving machine, indirect: anelectricdrivingmachine, the motor ofwhich is connected indirectly to the driving sheave, drum, gear reducer, or shaft by means of a belt drive or chain drive. belt driving machine: an indirect driving machine equipped with a belt system as the connecting means. chain driving machine: an indirectdrivingmachine with a chain system as the connecting means. driving machine, rack-and-pinion: an electric driving machine in which the motion of the car is obtained by a power-driven rotation pinion(s) mounted on the car, traveling on a stationary rack mounted in the hoistway. driving machine, screw: an electric driving machine, the motor of which drives a nut on a vertical screw or rotates a vertical screw to raise or lower an elevator car. driving machine, hydraulic: a driving machine in which theenergyis providedbyahydraulicmachine andapplied by a hydraulic jack. chain-hydraulic drive machine: a hydraulic driving machine in which the drive member of the hydraulic jack is connected to the car by chains or indirectly coupled to the car by means of chains and sprockets. direct hydraulic driving machine: a hydraulic driving machineinwhichthedrivingmemberofthehydraulicjack is directly attached to the car frame or platform. roped-hydraulic driving machine: a hydraulic driving machineinwhichthedrivingmemberofthehydraulicjack is connected to the carbywire ropes orindirectlycoupled to the car by means ofwire ropes and sheaves. It includes multiplying sheaves, if any, and their guides. machine room, elevator, dumbwaiter, material lift: 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 useddirectlyinconnectionwiththeelevator,dumbwaiter, or material liftmaintained pressure: the hydraulic pressure between the pressure source and the control valves of a maintained pressure hydraulic elevator.