Timing, based on the distance between the farthest call button and the elevator door, begins with visible and audible signaling of car arrival....
Search Results "Door Timing"
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Door and Signal Timing for Hall Calls [4.10.7], Door Delay for Car Calls [4.10.8]
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Door Closing Speed Tool
Door Closing Speed Tool This handy tool was developed by Evan Terry Associates to assist its surveyors in measuring door closing speed....