Install Entrapment Protection - Chamberlain LA412 Instruction Manual

To prevent SERIOUS INJURY or DEATH from a moving gate:
• ALL gate operator systems REQUIRE two independent entrapment
protection systems for each entrapment zone.
• Entrapment protection devices MUST be installed to protect anyone
who may come near a moving gate.
STEP 9

INSTALL ENTRAPMENT PROTECTION

This operator contains an inherent (internal) entrapment protection system and REQUIRES the addition of an external monitored entrapment
protection system (non-contact photoelectric sensor or contact edge sensor) for EACH entrapment zone prior to gate movement. A monitored
device sends a pulsed signal to the operator so the operator is aware of the device. If the operator does not receive the signal from the device it will
not run.
An entrapment zone is every location or point of contact where a person can become entrapped between a moving gate and a stationary object. Your
application may contain one or many entrapment zones. Property owners are obligated to test entrapment protection devices monthly. Use only
LiftMaster approved entrapment protection devices (refer to the accessory page).
NON-CONTACT SENSORS
If the photoelectric sensor beam gets blocked while the gate is moving, the gate will stop and reverse. The gate will not be able to travel in that
direction until the obstruction is cleared. Monitored photoelectric sensors MUST be used. If a monitored photoelectric sensor is not working or loses
power or the beam is blocked, then ALL gate operation in that direction will stop.
Sensors for Open Cycle
NOTE: If the distance between
the open gate and the wall is
less than 16" (40.6 cm)
entrapment protection for this
area is required.
Entrapment protection is required for the
area between the gate and the curb.
CONTACT SENSORS (EDGE SENSORS)
If the electrically activated edge sensor comes in contact with an obstruction while the gate is moving, the gate will stop and reverse. The gate will not
be able to travel in that direction until the obstruction is cleared.
For a gate operator utilizing
a contact sensor, if the
bottom edge of a swing gate
is greater than 6 inches
above the ground at any
point in its arc of travel, one
or more contact sensors
shall be located on the
bottom edge.
INSTALLATION
• Locate entrapment protection devices to protect in BOTH the open
and close gate cycles.
• Locate entrapment protection devices to protect between moving
gate and RIGID objects, such as posts, walls, pillars, or columns.
(Outside Property)
Edge Sensor for Open Cycle
If utilizing a contact sensor as entrapment
protection, one or more contact sensors
shall be located on the inside and outside
leading edge of a swing gate.
20
(Inside Property)
Monitored Photoelectric Sensors
Sensors for Close Cycle
Edge Sensor for Close Cycle