Nice 7251 Installation And Programming Manual page 7

UL325 USAGE CLASSES
The UL325 standard covers gate operators. Within this safety
standard several Usage Classes are described that define
different types of installations where gate operators can
be applied. Some operators are restricted in their usage
application. All Nice USA operators are approved for use
in all four UL325 Usage Classes. Appropriate Usage Classes
are shown in the Specifications.
CLASS I RESIDENTIAL GATE OPERATOR: Intended for
use in a location of one to four single family dwellings or
a parking area associated with one to four single family
dwellings.
CLASS II COMMERCIAL/GENERAL ACCESS GATE
OPERATOR: Intended for use in a commercial location or
building such as a multi-family housing units (five or more
single family units) hotels, garages, retail stores or other
buildings servicing general public.
CLASS III INDUSTRIAL/LIMITED ACCESS GATE
OPERATOR: Intended for use in an industrial location or
building such as factories or loading docks or other locations
not intended to service general public.
CLASS IV RESTRICTED ACCESS GATE OPERATOR:
Intended for use in guarded industrial locations or buildings
such as an airport security area or other restricted access
location, not servicing general public, in which access is
monitored by security personnel or via closed circuitry.
VEHICULAR TRAFFIC ONLY
This automatic gate operator is not designed nor is it
intended for pedestrian traffic. Vehicular gate operators must
by their nature be powerful to function reliably. This power
can cause injury or death. Accordingly, direct all pedestrian
traffic to a separate walk-through gate.
GATE INSTALLATION REQUIREMENTS
Install this gate operator only when:
• The operator is appropriate for the construction of the
gate and the usage Class of the gate;
• All openings of a horizontal slide gate are guarded or
screened from the bottom of the gate to a minimum of
1.83 meters (6 feet) above the ground to prevent a 57.2
mm (2-1/4 inches) diameter sphere from passing through
the openings anywhere in the gate, and the portion of the
adjacent fence that the gate covers in the open position;
• All exposed pinch points are eliminated or guarded;
• guarding is supplied for exposed rollers;
• When utilizing a Nice 936 or 1050 board, a maximum of
8 entrapment protection devices (6 BlueBUS and 2 pulse
outputs may be connected.
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7251 / 7351 Slide Gate Operator
INSTALLATION AND PROGRAMMING MANUAL
PEDESTRIAN TRAFFIC
The operator is intended for installation on gates used for
vehicles only. Pedestrians must be supplied with a separate
access opening. The pedestrian access opening shall be
designed to promote pedestrian usage. Locate the gate
such that persons will not come in contact with the vehicular
gate during the entire path of travel of the vehicular gate.
GATE CLEARANCES
The gate must be installed in a location so that enough
clearance is supplied between the gate and adjacent
structures when opening and closing to reduce entrapment
risk. Swinging gates shall not open into public access areas.
GATE CONDITION
The gate must be properly installed and work freely in both
directions prior to gate operator installation. Don't change
operator Force Sensitivity setting to compensate for an
improperly installed, improperly functioning, or damaged
gate.
GATE CONTROL ACCESS
Permanently mounted controls intended for user activation
must be located at least 1.83 m (6 ft) away from any moving
part of the gate and where the user is prevented from
reaching over, under, around or through the gate to operate
the controls. Exception: Emergency access controls only
accessible by authorized personnel (e.g. fire, police, EMS)
may be placed at any location in the line-of-sight of the gate.
STOP/START BUTTON LOCATION
The Stop and/or Reset button must be located in the line-
of-sight of the gate. Activation of the reset control shall not
cause the operator to start.
WARNING SIGNS
A minimum of two (2) WARNING SIGNS shall be installed, in
the area of the gate. Each placard is to be visible by persons
located on the side of the gate on which the placard is
installed.
PHOTO EYE SENSORS
For gate operators using a non-contact sensor (Photo Eye):
• See instructions on the placement of non-contact sensors
for each type of application.
• Care shall be exercised to reduce the risk of nuisance
tripping, such as when a vehicle trips the sensor while the
gate is still moving.
• One or more non-contact sensors shall be located where
the risk of entrapment or obstruction exists, such as the
perimeter reachable by a moving gate or barrier.
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