NOTE: Specify for three or more adjacent elevators.
**************************************************************************
Provide Group Automatic Operation. Provide a single push button for
terminal landings and dual push buttons, up and down at intermediate
landings. In each car operating panel, provide push buttons numbered to
correspond to each landing. If a car is taken out of service, or fails to
respond to a landing call within a predetermined adjustable time limit of
approximately 40 to 180 seconds, transfer calls to another car until
out-of-service car is returned to the system. Provide a push-button riser
adjacent to each elevator.
][2.2.8
Parking Switch
**************************************************************************
NOTE: Specify parking switch if there is a definite
reason to change the parking station daily or for
security purposes. For example, to provide night
shut down of a car for security purposes.
**************************************************************************
ASME A17.1, Rule 111.8. Provide a two-position parking switch in the car
station service cabinet. One position causes car to remain parked at the
floor landing where last used; the other position causes car to park at
[main][_____] floor.
][2.2.9
Hospital Emergency Commandeering Service
Provide "ON-OFF" key switch and indicator light at [designated][all]
landings to cause one elevator to respond directly to the landing
activated. Turning switch to "ON" position cancels previously registered
"CAR" calls and requires car to bypass hall calls while in route to
activated landing.
On arrival, car will remain at landing with hoistway and car doors open for
predetermined time to permit car to be placed on emergency service. If the
person decides not to use car during predetermined time period, car doors
will close and car will automatically return to normal service. Indicator
lights shall automatically illuminate during emergency service. Key shall
be removable only in "OFF" position.
]2.3
ELEVATOR MACHINE
**************************************************************************
NOTE: Use geared traction machines up to nine
floors with moderate-to-heavy traffic demand,
generally not more than three or four cars in a
group and for speeds not exceeding 1.75 mps 350 FPM.
Use gearless traction for speeds beyond 1.75 to
2.00 mps 350 to 400 FPM, for ten floors or more and
where intensive traffic is anticipated, i.e.,
high-rise hospitals, busy headquarters, office
buildings. Gearless elevators are often used in
large hospitals for six or more stops. However if
2.00 mps 400 FPM is required, the elevator industry
usually supplies 2.50 mps 500 FPMas the standard
entry for gearless traction machines. Use generator
field control for all applications of gearless
elevators and most geared elevators. For motors
SECTION 14210N
Page 15
Previous Page
