Emergency Break Glass
Emergency Exit Break Glass is an essential part of an Access Control System. It should always be fitted on all Emergency Exits on the secured side whenever a failsafe device is installed.
The Exit Break Glass is designed for use in fire detection systems with a central control monitor. It can be used for open or closed circuits. When the glass is pressed hard or broken, the circuit cuts off instantly. The soft glass is designed for easy breaking using a hand or fingers to apply pressure on the panel. The doors will remain open after the glass is broken. It provides a quick method of escape or evacuation that still maintains your security.
Exit through a fire escape door
Fire escape door must be able to be opened in the event of an emergency. This can be through a handle which directly opens the lock. In buildings such as theatres and offices where there are large numbers of occupants, the usual method is by using a crash bar which mechanically pulls open the locking bolts. Electronic equipment is more vulnerable to fire damage and potential failure, than mechanical locking. Fail safe opening of fire doors The first step is to use a ‘fail open’ release for the door. This type of device requires power to lock; it is therefore unlocked when no electricity is supplied. Magnetic locks are normally fail open. The next step is to have a ‘fail safe’ method of cutting the power to the lock to ensure the lock releases in an emergency. In the event that the access control does not work, there must be an emergency override. In most commercial premises, this is provided by a break glass switch fitted on the 12V lock supply line. Break glass switches are widely available in green and white.
Where doors are released in the event of a fire alarm the security provided by the access control system may be nullified. A break glass unit used in an unauthorised manner will leave the door unlocked. Where high security is required, consideration should be given to using locks, door contacts or break glass units that are linked to a monitoring system. Falco Access System can provide an All-In-One Solutions for this. For more details, you may contact Brickwell Pte Ltd as they offer comprehensive solutions for security systems. They can be contacted at www.brickwell-intl.com/contact.