In the event of an alarm or power failure however the door is reliably closed by the re instated mechanical action of the door closer.
Dorma free swing door closer.
Overhead door closers with hold back and free swing functionality for busy corridors to ease flow of traffic these door closers will close the fire door only when the fire alarm sounds.
Easy functional check with test pushbutton.
A swing free door closer enables a door to operate without any resistance just like a door without a door closer.
Allows door to operate in the same way as a door without a closer active leaf only in the case of double doors.
Dorma bts 80 flb floor spring.
On activation of the fire alarm the electro magnetic control releases enabling the door closer to function and close the door securely.
This allows the door to be left in any position such as ajar if preferred.
More details 159 99 vat excl.
Successfully third party tested to bs en1155.
Typical applications include fire and smoke check doors in hospitals and homes for the elderly.
The dorma ts99fl is a guide rail electromagnetic hold open device with a free swing function.
It allows the door to be operated without resistance and will stay at any angle that it s left open in.
However the door can be freely operated by virtue of the free swing func tion integrated in the arm.
Dorma ts 99 fl.
Hard wired to the alarm system 24 v or in the case of the freedor completely wireless and battery operated.
The freedor free swing fire door closer is a unique wireless solution that allows users to hold fire doors open at any angle and automatically closes the door when the fire alarm sounds.
In the event of a fire or power failure the door is reliably.
Ideal for any situation where users may experience difficulty in operating doors the bts 80 flb allows ease of access while offering peace of mind for in the event of a.
Dorma ts 99 door closer.
If the door leaf is opened wide min.
75 the closer spindle is held in this position by the electro magnetic hold open device in the hydraulic closer body.