Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 7 - ELEVATORS, LIFTS, ESCALATORS, DUMBWAITERS, HOISTS ANDTRAMWAYS › Subchapter A - PRELIMINARY PROVISIONS › SPECIFICATIONS-ALL HOISTING AND LOWERING EQUIPMENT › Section 7.33 - Operation of elevators under fire or other emergency conditions

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Automatic
					 elevators serving three or more landings in line and having a travel of 25 feet
					 or more above the lowest grade elevation, shall conform with the following:
(1) A three position-on, off and
					 by-pass-keyed switch shall be provided at the main floor for each single
					 elevator or for each group of elevators. The key shall be removable only in the
					 "on" and "off" positions. When the switch is in the "on" position, elevators
					 controlled by this switch which are on automatic service shall return nonstop
					 to the main or approved floor and the doors shall open and remain
					 open.
(2) Elevators without a
					 terminal landing at grade level shall be returned to that landing closest to
					 grade level or other approved level.
(3) An elevator traveling away from the main
					 or approved floor shall reverse at the next available floor without opening its
					 doors.
(4) Elevators equipped with
					 automatic power operated doors and standing at a floor other than the main or
					 approved floor with doors open shall close the doors without delay and proceed
					 to the main or approved floor.
(5)
					 Door reopening devices for power operated doors which are sensitive to smoke,
					 heat or flame shall be rendered inoperative.
(6) Elevator and corridor call buttons shall
					 be rendered inoperative and call registered lights and direction lanterns shall
					 be extinguished and remain inoperative.
(7) An elevator stopped at a landing shall
					 have its "Emergency Stop" switch rendered inoperative as soon as the doors are
					 closed, and it starts toward the main or approved floor. A moving elevator,
					 traveling to or away from the main or approved floor, shall have its "Emergency
					 Stop" switch rendered inoperative immediately.
(8) A sensor in each elevator lobby which
					 when activated prevents elevators from stopping at that floor may not be
					 substituted for the requirements of this subsection.
(9) In addition to the keyed switch required
					 in this subsection, an approved type heat and smoke or products of combustion
					 sensing device shall be installed in each elevator lobby at each floor except
					 the main or approved floor. The activation of a sensing device at any floor
					 shall cause all elevators in the group that serves that floor to return nonstop
					 to the main or approved floor. The operation shall conform to the requirements
					 of this section. The keyed switch required, when moved to the "bypass"
					 position, shall restore normal service independent of the sensing device.
(i)
Exception No. 1.
Sensors
					 are not required in each elevator lobby of buildings which are completely
					 protected by an approved automatic sprinkler system, providing a smoke sensor
					 is installed either on each elevator car top or at the top of the elevator
					 hoistway the activation of which shall return the elevators to the main or
					 approved floor.
(ii)
Exception No. 2.
Sensors are not required for elevators
					 located in or opening into manufacturing areas or elevators serving unenclosed
					 landings, providing a smoke sensor is installed either on each elevator car top
					 or at the top of the elevator hoistway the activation of which sensor shall
					 return the elevators to the main or approved floor.
(iii)
Exception No. 3.
As an
					 alternate to sensors a building equipped with an approved fire alarm system may
					 arrange such system so that when activated it shall cause all elevators to
					 return nonstop to the main or approved floor in an operation conforming to the
					 requirements of this section.