LiftMaster LA400 Residential DC Linear Gate Operator - Manual (Page 3)

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CLASS I – RESIDENTIAL VEHICULAR GATE
OPERATOR
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.
CLASS II – COMMERCIAL/GENERAL ACCESS
VEHICULAR GATE OPERATOR
A vehicular gate operator (or system) intended for use in a commercial location or
building such as a multi-family housing unit (five or more single family units) hotel,
garage, retail store or other building servicing the general public.
UL325 ENTRAPMENT PROTECTION REQUIREMENTS
NOTE: UL requires that all installations must have warning signs placed in plain
view on both sides of the gate to warn pedestrians of the dangers of motorized gate
systems.
GATE OPERATOR ENTRAPMENT PROTECTION
CLASS I CLASS II A, B1 or B2 A
UL325
Installation
Primary Type Secondary Type
Swing & Gate Barrier (Arm) Operator
SAFETY
» UL325 MODEL CLASSIFICATIONS
I
II
The chart above illustrates the entrapment protection requirements for
each of the three UL325 classes.
In order to complete a proper installation you must satisfy the entrapment
protection chart shown above. That means that the installation must have
one primary means of entrapment protection and one independent
secondary means of entrapment protection. Both primary and secondary
entrapment protection methods must be designed, arranged or configured
to protect against entrapments in both the open and close directions of
gate travel.
For Example: For a slide gate system that is installed on a single-family
residence (UL325 Class I) you must provide the following: As your primary
type of entrapment protection you must provide Type A inherent (built into
the operator) entrapment sensing and at least one of the following as your
secondary entrapment protection: Type B1- Non-contact sensors such as
photoelectric eyes, Type B2- Contact sensors such as gate edges.
CLASS III – COMMERCIAL/GENERAL ACCESS
VEHICULAR GATE OPERATOR
A vehicular gate operator (or system) intended for use in a industrial location or
building such as a factory or loading dock area or other locations not intended to
service the general public.
III
CLASS III
CLASS
A, B1 or B2 A, B1, B2 or E
SAFETY ACCESSORY SELECTION
All UL325 compliant LiftMaster gate operators will accept external entrapment
protection devices to protect people from motorized gate systems. UL325 requires
that the type of entrapment protection correctly matches each gate application.
Below are the four types of entrapment protection systems recognized by UL325 for
use on this operator.
ENTRAPMENT PROTECTION TYPES
Type A:
Inherent obstruction sensing system, self-contained within the operator.
This system must sense and initiate the reverse of the gate within two
seconds of contact with a solid object.
Type B1: Connections provided for a non-contact device, such as a photoelectric
eye can be used as a secondary protection.
Type B2: Connections provided for a contact sensor. A contact device such as a
gate edge can be used for secondary protection.
Type E: Built-in audio alarm. Examples include sirens, horns or buzzers.