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36th year apprentice & Floor Sweeper
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requirement that an indicator light be installed in each car which would backlight the outline of a traditional firefighters helmet. That would warn that the timer had started which would energize the shunt trip. I don't remember what the timer was to be set for. This would allegedly provide people with enough time to exit the car and avoid entrapment. No instruction sign was required by the language of that addition of the Safety Code For Elevators And Escalators. Firefighters could be trained to keep a careful watch on the trip warning light and react appropriately but with no instructions the general public wouldn't have any idea what the light meant.
Around here there is no timer. The smoke in the shaft sends the elevator to the primary or secondary recall floor. Then the elevator is disabled and the hat flashes. The public doesn’t need to know what a flashing hat means because the elevator is disabled. A fireman can override the elevator, but does so at his own risk, especially if the hat is flashing. While there are several smoke detectors that will send the elevator to recall, only the one in the shaft turns on the flashing hat. That would be the pre-action. Next is the heat which sets off the shunt trip.

Around here sprinklers are only required in the shaft if there is hydraulic fluid, or non-fire rated traction belts. It’s cheaper to sprinkle the elevator than it is to get fire rated traction belts.
 
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