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• A minimum of two (2) warning signs shall be installed, one on each side of the gate where easily
visible.
• The gate must have sufficient room when opening and closing. Swinging gates should open
inwards and not into public access areas. The gate must be properly installed and move freely in
both directions.
• Install the gate operator only when: 1) The operator is appropriate for the construction of the gate
and the usage Class of the gate, 2) All openings of a horizontal slide gate are guarded or screened
from the bottom of the gate to a minimum of 4 feet (1.2 m) above the ground to prevent a 2-1/4
inch (57.15 mm) diameter sphere from passing through the openings anywhere in the gate, and in
that portion of the adjacent fence that the gate covers in the open position, 3) All exposed pinch
points are eliminated or guarded, and 4) Guarding is supplied for exposed rollers, could be UL
approved
• The gate must be properly installed and work freely in both directions prior to the installation of
the gate operator. Do not over-tighten the operator clutch or pressure relief valve to compensate
for a damaged gate.
• For gate operators utilizing Type d protection: 1) The gate operator controls must be placed so that
the user has full view of the gate area when the gate is moving, 2) The placard as required by
52.1.1.6 shall be placed adjacent to the controls, 3) An automatic closing device (such as a timer,
loop sensor, or similar device) shall not be employed, and 4) No other activation device shall be
connected.
• Controls must be far enough from the gate (at least six feet) so that the user is prevented from
coming in contact with the gate while operating the controls. Controls intended to be used to reset
an operator after 2 sequential activations of the entrapment protection device or devices must be
located in the line-of-sight of the gate. Outdoor or easily accessible controls shall have a security
feature to prevent unauthorized use.
• For gate operators utilizing a non-contact sensor in accordance with 30A.1.1: 1) See instructions on
the placement of non-contact sensors for each Type of application, 2) 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, and 3) 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.
• For a gate operator utilizing a contact sensor in accordance with 30A.1.1: 1) One or more contact
sensors shall be located at the leading edge, trailing edge, and post mounted both inside and
outside of a vehicular horizontal slide gate. 2) One or more contact sensors shall be located at the
bottom edge of a vehicular vertical lift gate. 3) One or more contact sensors shall be located at the
pinch point of a vehicular vertical pivot gate. 4) A hardwired contact sensor shall be located and its
wiring arranged so that the communication between the sensor and the gate operator is not
subjected to mechanical damage. 5) A wireless contact sensor such as one that transmits radio
frequency (RF) signals to the gate operator for entrapment protection functions shall be located
where the transmission of the signals are not obstructed or impeded by building structures, natural
landscaping or similar obstruction. A wireless contact sensor shall function under the intended end-
use conditions.
Requirements for UL Compliant Installation
