1. Phase I: A three (3) position (on, off, bypass) key operated switch will be provided at a  (main, lobby) floor of the elevator. When the switch is placed in the “on” position, or if the smoke sensors (provided by others) are activated, the elevator will return non-stop to the main floor. 

A) An elevator traveling away from the main floor will reserve at the next available floor, without opening the doors, and proceed to the main floor without stopping for car or hall calls. 

B) Door reopening devices for power operated doors (Rule 112.5 of the ANSI 17.1 Code) and EN-81. which may be affected by smoke or heat so to prevent the door closing will be rendered inoperative. 

C) Elevators standing at a floor other than the main floor will close their doors, and proceed to the main floor without stopping for car or hall calls. 

D) The hall buttons will be rendered inoperative 

E) The elevators may be restored to normal operation by furnishing the lobby key switch to the “off” position. 

F) Once the car has started to return, the emergency stop switch will be disconnected. 

G) Combustion sensors (furnished and installed by others) will imitate the forgoing operation by providing a signal to terminals on the elevator controller. Third position lobby hey switches will bypass such sensors. The key will not be removed in this third position. 

2. Phase II: A three (3) position (off, hold, on) key switch designated for a key acceptable to local authorities will be provided in or adjacent to the car operating panel of each elevator. This switch when operated, will initiate the following special services. 

A.) The elevator will be operated by a person in the car, and will not respond to hall calls.

B.) Operation will be by one or more registered calls in the car, causing the doors to close by operating the door close button. Release of pressure on the button prior to full close will allow the doors to immediately reopen. 

C.) Car calls operated in error will be reset by momentary operation of the initiating key switch.

D.) Upon completion of door close, the car will run to the car floor and stop with doors closed. Door open will be by constant pressure of the door open button; if pressure is released prior to full open, the doors will immediately re-close. 

E.) Special emergency service will be terminated by placing the key operated switch in the Lobby floor and in the car in the off position