The provisions of this subchapter are not retroactive except that the provisions of this section are retroactive. Existing elevators moved to new hoistways shall conform with all the requirements for new installations. All alteration work on existing installations required by this section must be completed no later than December sixth, nineteen hundred seventy.
(a) Emergency interlock release switch. Emergency interlock release switches in elevator cars, where provided, shall be of the key-operated, continuous-pressure type and all other types now in use shall be removed or replaced with approved key-operated, continuous-pressure type switches.
(b) Machines – belt and chain-driven. Single-belted and chain-driven machines shall be permitted only on freight elevators and only when equipped with electrically released, spring applied brakes and with terminal stopping devices and electrical safety devices as required in reference standard RS 18-1.
(c) Machines – drum winding. Drum winding machines shall be equipped with electrical machine limits as set forth in reference standard RS 181.
(d) Car gate switches – additions, replacement, or relocation of. Car gate electric contacts where such devices are not provided or are found to be tied or blocked so as to render them inoperative shall be added, replaced or relocated as required by the commissioner. Installation or replacement of car gate electric contacts shall conform to the requirements of reference standard RS 18-1.
(e) Elevator hoistway-door interlocks. All existing elevators not presently equipped with hoistway doors having door interlocks shall be provided with hoistway landing doors equipped with approved type hoistway-door interlocks conforming to the requirements of reference standard RS 18-1. Approved-type interlock switches may be installed in connection with existing hoistway door closers, provided the combination door closers and interlocks conform to all the requirements for approved hoistway-door interlocks. The use of elevator parking devices and hoistway door unlocking devices for opening hoistway doors from the landing side shall conform to the requirements of reference standard RS 18-1. Exceptions: Interlocks or electric contacts shall not be used on hydraulic elevator landing doors or gates except where such elevators are provided with electric control and operating devices.
(f) Emergency signal or telephone. Automatic operation elevators or any elevator operated at any time without a designated operator shall be provided with an audible emergency signal, and except in buildings classified in occupancy groups J-1, and J-2, the cars shall be provided with a telephone, in accordance with the requirements of reference standard RS 18-1.
(1) Elevators with car switch operation shall be provided with a signal system by means of which signals can be given from any landing whenever the elevator is desired at the landing.