LiftMaster LA400 LA400 Manual - Page 3
Safety - operator
UPC - 753182403953
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SAFETY » UL325 MODEL CLASSIFICATIONS CLASS I - RESIDENTIAL VEHICULAR GATE OPERATOR I 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 II 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. CLASS III - COMMERCIAL/GENERAL ACCESS III 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. 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. UL325 ENTRAPMENT PROTECTION REQUIREMENTS GATE OPERATOR ENTRAPMENT PROTECTION UL325 Installation CLASS CLASS I CLASS II CLASS III Swing & Gate Barrier (Arm) Operator Primary Type A A, B1 or B2 Secondary Type A, B1 or B2 A, B1, B2 or E 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. 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. 2