Special requirements for electric or oil-electric platform elevators are the following:
- (1) The rise shall not exceed 20 feet.
- (2) The capacity shall not exceed 2,500 pounds.
- (3) The speed shall not exceed 30 feet per minute.
- (4) The platform shall not exceed 36 square feet in area.
- (5) The winding drums and sheaves shall not be less than 14 inches in diameter.
- (6) The machine, motor and controller shall not be placed in the pit, but drums may be placed in the pit under the elevator car.
- (7) Guide rails shall extend from the pit to the top of the shaft and be constructed of steel or iron.
- (8) An elevator shall have at least two cables of not less than 1/2 inch diameter.
- (9) Platform elevators may be used from the basement to the first floor only.
- (10) Spring buffers shall be provided and so placed that the car cannot rest on the drums or drum shaft.
- (11) A pit shall be not less than four feet deep, but is exempt from application of § 7.274 (relating to shaftway clearances).
- (12) Elevators may be of the two-point suspension type, but not of the four-point suspension type.
- (13) Cars shall be provided with a safety device of the broken rope or governor type.
- (14) Machines shall be provided with automatic terminal stops and shall have shaftway limit switches at the top and bottom.
- (15) Shaftway enclosure gates or doors and locking devices shall comply with the requirements for freight elevators, except that shaftway enclosures shall be flush from top to bottom.
- (16) Control shall be of the car switch, double-button constant pressure or full automatic pushbutton type. Hand rope control is prohibited.
Cross References
This section cited in 34 Pa. Code § 7.291 (relating to general).