Safety Installation Information - Chamberlain LiftMaster LA412 Owner's Manual

1. READ and FOLLOW all instructions.
2. The gate operator is intended for use with Class I
vehicular swing gates.
Class I denotes a vehicular gate operator (or system)
intended for use in a home of one to four single
family dwellings, or a garage or parking area associated
therewith.
Install the gate operator only when the operator is
appropriate for the construction and the usage class of
the gate.
3. Gate operating system designers, installers and users
must take into account the possible hazards associated
with each individual application. Improperly designed,
installed or maintained systems can create risks
for the user as well as the bystander. Gate system
design and installation must reduce public exposure to
potential hazards. Install the gate operator only when
the operator is appropriate for the construction of the
gate and the usage class of the gate. All exposed pinch
points must be eliminated or guarded.
4. A gate operator can create high levels of force during
normal operation. Therefore, safety features must be
incorporated into every installation. Specifi c safety
features include safety sensors.
5. The gate must be properly installed and work freely in
both directions prior to the installation of the gate operator.
6. The gate must be installed in a location so that enough
clearance is provided 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.
7. The operator is intended for use 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. The
pedestrian access shall be located such that persons
will not come in contact with the moving vehicular gate.
8. Pedestrians should never cross the pathway of a
moving gate. The gate operator is not acceptable for
use on any pedestrian gate. Pedestrians must be
supplied with a separate pedestrian access.
Introduction

SAFETY INSTALLATION INFORMATION

9. For an installation utilizing non-contact sensors (safety
sensors), see product manual on the placement of
non-contact sensors (safety sensors) for each type of
application.
a. Care shall be exercised to reduce the risk of
nuisance tripping, such as when a vehicle trips the
safety sensor while the gate is still moving.
b. One or more non-contact sensors (safety sensors)
shall be located where the risk of entrapment or
obstruction exists, such as the perimeter reachable
by a moving gate or barrier.
10. For a gate operator utilizing a contact sensor such as
an edge sensor:
a. 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.
b. 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.
11. Never mount any device that operates the gate
operator where the user can reach over, under, around
or through the gate to operate the controls. Controls
are to be placed at least 6' (1.8 m) from any part of the
moving gate:
• A hard wired control device shall be located and its
wiring arranged so that communication between the
control device and the gate operator is not subject to
mechanical damage.
12. 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, or easily accessible controls shall have a
security feature to prevent unauthorized use. Never
allow anyone to hang on or ride the gate during the
entire travel of the gate.
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