§ 7.17. Prohibited installations.
(a) No hand elevator shall be equipped with any attachments or equipment for applying power, unless the hoisting machinery is permanently and completely converted into power-driven machinery. In such cases, all requirements for power-driven freight elevators shall be complied with.
(b) No back guide elevator car, except a hydraulic plunger type, shall be constructed and installed unless the plunger is located under the center of the elevator car platform.
(c) The operation of elevators by friction gearing or clutch mechanism is prohibited when such friction gearing and clutch mechanism form the primary means for the transmission of the power required to operate the elevator at normal speed.
(d) The installation or operation of elevators of the multiple or four-point suspension type is prohibited. Existing four-point suspension type sidewalk elevators are not precluded.
(e) The operation of passenger elevators raised and lowered by single hoisting cables is prohibited, except when the mechanism of such elevators is in a reasonably safe condition and may be made to conform to the requirements applicable to existing installations, if the present drums are properly scored to accommodate an additional cable and the additional cable is installed, and new drums are provided with the proper scoring for two or more cables and the additional cable is installed. This requirement also applies to new hand and gravity types of freight elevators but not to existing hand and gravity elevators.
(f) The installation of passenger elevators in blind shaftways is prohibited unless a side emergency exit is provided to a contiguous elevator, or emergency entrances are provided in the blind portion of the shaftway, as required by § 7.54(e) (relating to landing doors and locking devices).
(g) New installations of hand rope control elevators are prohibited.
(h) A platform shall not be located on the car top of any elevator for the purpose of hauling passengers or materials. This does not apply to a working platform while the elevator is under construction or alterations are being made to the hoistway.
Source The provisions of this § 7.17 amended July 22, 1971, 1 Pa.B. 1652.
Cross References This section cited in 34 Pa. Code § 7.251 (relating to general).
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