As security and door control grow in popularity, the variety of delayed egress products is also increasing, with many different models to suit a variety of installation environments. Along with the increase in the use of Special Locking Arrangements, the number of building codes addressing these...
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As security and door control grow in popularity, the variety of delayed egress products is also increasing, with many different models to suit a variety of installation environments.
Along with the increase in the use of Special Locking Arrangements, the number of building codes addressing these installations have also increased, with different code writers specifying different requirements. Therefore the first step the locksmith must take before repairing or installing a delayed egress system is to determine the requirements his LAHJ (local authority having jurisdiction). Life Safety issues must be taken seriously.
Recently we were called to perform a service call on a delayed egress system installed on the shipping and receiving door of a large supermarket. The system which required service was an Alarm Lock #715 delayed egress electronic exit door locking system which had been pretty much destroyed by forklifts smashing into it.
We knew from first-hand experiences that the local authority having jurisdiction (LAHJ) was tolerant of Delayed Egress installations which conformed to the 2003 International Fire Code (paragraph 1008.1.8.6).
The #715 is somewhat unique in that it is a mechanical locking device that incorporates a deadbolt and a unique rotating cam latch.
The #715 also utilizes control circuitry which is mounted off the door on the wall adjacent to the door.
The #715 may be handed in the field to suite the application.
The #715 is an evolved version of the legendary SIRENLOCK™ MODELS 250/260 700/710 units that made Alarm Lock a legend.
The #715 adds the delayed egress feature, extends the paddle to a bar across the door, uses line voltage power supply as well as a battery backup, and provides the unique cam latch.
Arming the #715 is accomplished by actuating the deadbolt using a 1 1/8" rim cylinder. A cylinder may be installed on the exterior of the door so the unit may be armed/disarmed from either side.
Arming the unit extends the deadbolt into the rim strike and physically locks the door. The #715 also engages the door with a cam latch.
The #715 provides the ability to connect to the fire alarm and smoke detector. When the bar on the #715 is depressed, a loud alarm sounds (95dB@ 10 feet), and after 15 seconds the door may be opened for egress. In the event of a fire alarm, the door may be opened instantly.
The audible alarm may be configured to either sound continuously until the #715 is reset with a key, or automatically shut down after two minutes. The door must be manually relocked with a key regardless of the audible alarm setting.
A power interruption to the #715 will not cause the door to unlock or even affect the operation of the delayed egress feature. The standard and readily available 9-volt battery used for backup will operate the unit for 200 alarm sequences or seven hours of continuous alarm.
Alarm Lock emphasizes that NFPA 101 regulations be observed when the #715 is connected to an approved supervised automatic fire detection system or sprinkler system. Alarm Lock also recommends use of a door closer which is able to fully close the door.
The #715 is a rugged device suitable for harsh environments. It will withstand a lot of abuse and continue to function properly.
For facilities or enterprises which use a large number of delayed egress systems, the #715 offers some great features:
It is positive locking; a dead battery or loss of power will not result in a loss of security
Most failures can be resolved by the replacement of a small inexpensive component available from Alarm Lock, rather than replacing the entire assembly.