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UL325 INSTALLATION RECOMMENDATIONS
1. Install the gate operator only when:
a. The operator is appropriate for the construction and the usage class of the gate.
b. All openings of a horizontal slide gate are guarded or screened from the bottom of the gate to a
minimum of 4' (1.2 m) above the ground to prevent a 2-1/4" (6 cm) 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.
c.
All exposed pinch points are eliminated or guarded, and guarding is supplied for exposed rollers.
2. The operator is intended for installation only on gates used for vehicles. 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.
3. 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 the risk of entrapment. Swinging gates shall not
open into public access areas.
4. The gate must be properly installed and work freely in both directions prior to the installation of the gate
operator.
5. Controls intended for user activation must be located at least six feet (6') 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. Outdoor or easily accessible controls shall have a security feature to prevent unauthorized use.
6. The Stop and/or Reset (if provided separately) must be located in the line-of-sight of the gate. Activation of
the reset control shall not cause the operator to start.
7. A minimum of two (2) WARNING SIGNS (supplied with the gate operator) shall be installed, one on each side
of the gate where easily visible.
8. For a gate operator utilizing a non-contact sensor:
a. Reference owner's manual regarding placement of non-contact sensor for each type of application.
b. 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.
c.
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.
9. For a gate operator utilizing a contact sensor such as an edge sensor:
a. One or more contact sensors shall be located where the risk of entrapment or obstruction exists, such
as at the leading edge, trailing edge and post mounted both inside and outside of a vehicular horizontal
slide gate.
b. One or more contact sensors shall be located at the bottom edge of a vehicular vertical lift gate.
c.
A hard wired contact sensor shall be located and its wiring arranged so the communication between the
sensor and the gate operator is not subject to mechanical damage.
d. A wireless contact sensor such as the 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.
e. One or more contact sensors shall be located on the inside and outside leading edge of a swing gate.
Additionally, if the bottom edge of a swing gate is greater than 6" (152 mm) above the ground at any
point in its arc of travel, one or more contact sensors shall be located on the bottom edge.
f.
One or more contact sensors shall be located at the bottom edge of a vertical barrier (arm).
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