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1. WKS25 Fire damper
2. Steel profile designed as a function of the pairing lenght
3. Steel plate
4. Fixing screws
5. Intumescent gasket long as a function of the pairing lenght
• It is forbidden to pair three or more fire dampers.
1. WKS25 Fire damper
2. Steel profile designed as a function of the pairing lenght
3. Steel plate
4. Fixing screws
5. Intumescent gasket long as a function of the pairing lenght
• It is forbidden to pair three or more fire dampers.
• It is forbidden to vertically pair two fire dampers with vertical axis.
Mechanism type
Manual and compact manual
Manual
Compact manual
1. Manual opening lever
2. Manual closing button
3. Lever position when the blade is open
4. Lever position when the blade is closed
Blade closing mode
Automatic closing with thermal fuse.
The control mechanism has a thermosensitive element that auto-
matically closes the blade when the temperature in the duct exceeds
70°C (or 95°C for the fire damper with 95°C thermal fuse).
It is possible to close the damper by pressing the indicated button.
Blade opening mode
The damper must be opened when the ventilation system if
switched off.
It is possible to open the damper blade by rotating the lever anti-
clockwise.
In case of closed damper as a result of the action of the thermosen-
sitive element, it is possible to manually reopen the damper by rotat-
ing the lever counterclockwise once the element has been replaced.
Position indication microswitches
On request, the fire damper can be supplied with position mi-
croswitches (S2 optional) that signal the blade position (open or
closed). Refer to the section Electrical connections for more details.
Closing by remote control
Not available
Temperature calibration of thermosensitive element for auto-
matic damper closing
70 °C±7 °C (Standard)
95 °C±9 °C (On request).
CAUTION: The compact mechanism is not interchangeable
with other types of manual mechanism.
