The Briton 996 electromagnetic hold open / swing free door closer is designed to be connected to a buildings fire alarm system and will close the door in the event of a fire to prevent the fire from spreading.
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A 75mm diameter Satin Stainless Steel Automatic Fire Door Keep Clear Sign.
The Briton 996 Series is a range of closers with an integrated electromagnetic hold open mechanism. Each unit can be set to either ‘hold-open’ or ‘swingfree’ operation. In either case, the spring closing function of the closer can be temporarily disabled to allow free passage. When de-activated via a connection to the building fire alarm or smoke detection system, the electromagnet disengages and the door closer closes the door in the normal manner to maintain fire safety.
Figure 1/61 – For pull side mounting/transom mounting
Figure 66 – Push Side Mounting
Hold Open – Held rigidly open until pulled close or electromagnetically released.
Swing Free – Acts as though there is no closer on the door for assisted opening, however, it will close in the event of a fire (if linked to fire alarm). Please note that when used in this mode, the Briton 996 damping action is ineffective and the door will slam in draughty conditions.