Garage door industry magazine for garage door dealers, garage door manufacturers, garage door distributors, garage door installers, loading docks, garage door operators and openers, gates, and tools for the door industry.
Issue link: https://idoi.epubxp.com/i/603426
1 Entrapment-Protection Devices. Gate operators are required to have a minimum of two independent means of entrapment protection where the risk of entrapment or obstruction exists. A manufacturer can use two inherent-type systems, two external-type systems, or an inherent and an external system to meet the requirement. However, the same type of device cannot be used for both means of protection. 2 Monitoring Required. An external non-contact sensor or contact sensor may be used as a means of entrapment protection. However, the sensor must be monitored once every cycle for (1) the correct connection to the operator and (2) the correct operation of the sensor. If the device is not present, not functioning, or is shorted, then the gate operator can only be operated by constant pressure on the control device. Portable wireless controls will not function in this case. MANAGEMENT Continued on page 78 By Rick Sedivy, DoorKing Director of Marketing and Regulatory Affairs [left photo] and Tom DeSilvia, LiftMaster Director of Engineering for Regulatory and Test Services [right photo] V O L U M E 4 9 I S S U E 6 D E C E M B E R 2 0 1 5 77 3 Entrapment Risk Identifcation. As in the past, it's up to the installer to examine the installation and determine where a risk of entrapment or obstruction exists. Manufacturers are required to provide instructions for the placement of external devices, but they give only examples of suggested entrapment protection in their installation manuals. If the installer identifes a risk of entrapment or obstruction, at least two independent means of entrapment protection are required. 4 Terminology Change. The terms "primary" and "secondary" have been removed in the description of entrapment protection devices. This was done to emphasize that all entrapment protection devices are equally important. 5 The End of Type E. Type E (audible alarm) devices can no longer be used for entrapment protection. This change was made because the Type E device is really a warning device, not an entrapment-protection device. Also, all gate operator classes are now required to have an audio alarm that sounds when two successive obstructions are encountered via a contact-type system. CHANGES COMING TO UL 325 GATE OPERATORS for