certificate.
][2.5.5
Semi-Selective Door Operation
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NOTE: Use semi-selective operation for elevators
with rear openings but no landing with both front
and rear openings. Use full selective if, at any
floor, there are both front and rear openings. This
applies to both passenger and freight elevators.
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For elevator with rear opening at elevations differing from front opening,
provide semi-selective door operation so that only car door or gate
adjacent to hoistway door opens when car stops.
][2.5.6
Full-Selective Door Operation
For elevator with one or more rear openings at same level as front opening,
provide full-selective operation with car and door operating buttons
clearly marked for front and rear openings, front and rear car button for
each such floor, and front and rear "DOOR OPEN" and "DOOR CLOSE" buttons.
Only door for which the button was operated opens or closes.
]2.5.7
Switches and Devices
Provide elevator manufacturer's standard grade for switches and devices on
car operating panel. Legibly and indelibly identify each device and its
operating positions. Locate car dispatching buttons in identical positions
in car operating panels for corresponding floors.
2.5.8
In-Car Position and Direction Indicator and Signal
In-car direction indicator shall be included in the in-car position
indicator fixture.
2.5.8.1
In-Car Position Indicator and Signal
Provide horizontal electrical or electronic digital position indicator
located minimum of 2135 mm 84 inches above car floor. Arrange indicator to
show floor position of car in hoistway and its traveling direction.
Indicate position by illumination of numeral or letter corresponding to
landing at which car is passing or stopping. Provide audible signal to
alert passenger that elevator is passing or stopping at a floor. Provide
audible signals exceeding ambient noise level by at least 20 decibels with
frequency not higher than 1500 Hz.
2.5.8.2
In-Car Direction Indicator and Signal
Provide visual and audible car direction indicators in car, indicating car
traveling direction. For visual directional signal, provide arrow of
minimum 65 mm 2 1/2 inches in size. Use equilateral triangles for arrows,
green for upward direction and red for downward direction. Provide audible
signal that sounds once for upward direction and twice for downward
direction.
2.5.9
Landing Position and Direction Indicator and Signal
Provide a single fixture containing the landing position and direction
SECTION 14210N
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