UL 325 is a standard for safety that addresses the automatic operation of garage doors, vehicular gates, louvers, and windows. EMX manufactures a group of products that meet the UL325 standard and allow installers to meet a specific subset of requirements related to automatic gate and overhead door installations.
It is important to understand some of the core requirements and concepts set forth in the UL325 standard to ensure you are meeting the safety requirements on the job site.
Four distinct types of classifications have been established:
The UL325 specification calls out the comomon gate types and required protections for each in the technical data sheet #353. They are described by their mechanical function as outlined below:
Each gate type requires 2 means of independent protection in entrapment zones on open and close (with the exception of vertical lift gates, which only requires one method of entrapment protention on opening.) The most common devices to meet these two requirements are the use of photo eyes and safety edges.