Although high efficiency cam action door closers enable low operating forces within and below those demanded within BS8300, some users find any resistance on a fire door either very hard or impossible to manage.
Where such instances arise, the use of a free swing door closer is highly advised. A free swing door closer, when active, enables to door to move freely without resistance being experienced by the user; thus, it enables the door to perform as any standard internal door within a domestic dwelling. In addition to no resistance from the closer, the door can be left in any position desired by the user - fully open, slightly ajar or fully closed. On activation of the fire alarm or in the event of a power failure, the door will close from whatever position it has been left in, ensuring the fire door will perform as required in the event of a fire. Whilst the alarm is active or while power is out, the free swing closer will perform as a ‘normal’ door closer, so if opened it will automatically close again. Once the alarm has been reset or power restored, the free swing will become active once again.
Free swing door closers are normally hard-wired into a Part 1 fire alarm system, as this is certainly a requirement for Category A Buildings under BS7273-4 where hold-open or free swing units must be fail-safe in all eventualities.
However, there will be situations where there is no Part 1 fire alarm system, or perhaps it is not possible to link the door closer into the existing system for one reason or another. Here, the dormakaba TS99FLR provides a fail-safe solution.
The dormakaba TS99 FLR is a power adjustable free swing door closer with integrated smoke sensor and power supply. The unit is simply mains powered and has the option to wire in 2 additional RM-N smoke sensors if required. Should either the integral smoke sensor, or any additional sensors detect smoke, or if there is a power cut, then the TS99 FLR will close the door from whatever angle the door has been left in.
The TS99FLR EN2-5 is suitable for doors up to 1250mm wide, is CE marked to BS EN1155 and is Certifire Approved CF119.
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