ASME A17.3:2005 pdf download

ASME A17.3:2005 pdf download.Safety Code for Existing Elevators and Escalators.

handrail stand; the uppermost portion of the balustrade that supports and guide% the handrail.
hoistway (shaft), elevator, dumbwaiter, or matenal lift:
an opening through a building or structure For the travel of ele’ators, dumhwaiters, or material lifts, esh’nding from the pit floor to the roof or floor above.
ht)ss:way, blind: the portion of a hoistway where hoistway entrances ate not provided.
hcntu muitipk: a hoistway with more than one elevator, dumbwaiter, or material lilt,
hoist way. single: a hoisiway with a single elevator, dumbwaiter, or material Lift.
hoistway, mine; The area within a mine shaft, and its above ground structure required for the elevator equipment, associated supports. and operations, including a minimum of 450 mm (18 in) around same,
hoistway access switch: a switch, located at a landing, the function of which is to permit operation of the car with the hoistway door at this landing arid the car door or gate open, In order to permit access to the top of the car or to the pit.
haistway door see door.
holstway door electric contact: see door or gafr electric contact.
hoistway door or gate locking device a device that secures a hoistwav dour or gate ni the closed position and prevents it from being opened from the Landing side except under certain specified conditions.
hcNsSuoy door combination mechanical lock and electric contact: a combination mechanical and electrical device with two related, but entirely independent functions, ‘hich are:
(a) to prevent operation of the driving machine by the normal operating device unless the hoistway door is in the closed position
(b) to lock th hoistway door in the dosed position and prevent It from being opened from the landing side unless the car is within the landing zone
NOTE: As ttwre is ni, pisotive mech.intcal sui hon twtwL’vn the drctric contact and the dour Icidang nwdianism. this devior ensures oniy that the door will beckwa’d, but not necessarily locked. when the car Irases the landing. Should the kick mechanran fail to oprraw as intended when released by a statkwurv or retiring car-cam device, the door can be opened from the landing side even though the car is not at the landtng II operated by a stanonary car-cam device, It does not prevent opening the door from the landiii side da the car passes the flour.