Current through Register Vol. 54, No. 50, December 14, 2024
Section 7.53 - Shaftway clearances(a)General. Passenger elevators, except hydraulic plunger elevators, shall be so constructed that the minimum clearance between the highest point of the elevator car, the top of the crosshead, and any overhead construction when the car platform is flush with the upper terminal landing and that the minimum clearance between the lowest point of the elevator car and the bottom of the shaftway or the top of any construction contained in such shaftway when the elevator car is at the lower terminal landing shall conform to the following:(1) Shaftway clearances as provided in sections 106 and 107 of the ANSI (A17.1-1971).(2) In existing installations, shaftway clearances and over travel may be accepted, except when insufficient for the safety of repairmen, oilers, and inspectors, subject to change at the discretion of the Department.(b)Plunger elevators. Shaftway clearances for plunger elevators shall comply with the following: (1)New installations. Plunger hydraulic and plunger hydro-steam elevators shall be so constructed that the minimum clearance between the lowest point of any overhead construction and the top of the crosshead shall be two feet when the car platform has reached its highest limit of travel. The installation of plungers longer than necessary for present travel is prohibited unless the plunger is provided with a positive mechanical stop which would be adequate to absorb the maximum impact load. The clearance at the bottom, however, shall be the same as for electric passenger elevators, with an overrun of not less than six inches.(2)Existing installations. Shaftway clearances and overhead travel may be accepted, except when, in the judgment of the Department, changes are necessary for the safety of repairmen, oilers, or inspectors.(c)Clearance between car and sill. The clearance between the elevator car sill and the landing sill shall not be less than 1/2 inch nor more than 1 1/2 inches.The provisions of this § 7.53 amended September 23, 1977, 7 Pa.B. 2696. This section cited in 34 Pa. Code § 7.71 (relating to conflicts); and 34 Pa. Code § 7.274 (relating to shaftway clearances).