8
Smoke damper
rev 21-10
Electric cables and system
For Manual Activation version (MA), the electric cables and system must be protected and designed to
have at least 30 minutes circuit integrity.
Operation
All smoke dampers have a electrical actuator. They are designed to be installed indoor in a smoke evacua-
tion and reversable HVAC system.
Before starting the system it is necessary to check the system for damages and that it is consistent to the
fire expert design.
Checking and Maintenance
Following features shall be checked up during a revision of the damper at least once every six months:
•
All parts are to be installed according to this mounting instruction.
•
The damper must not be damaged in any way, the cross-section of the casing, the motor and the
covering box of the motor must not be damaged in any way.
•
All connections with the smoke evacuation system are to be tightened and properly connected.
•
The ducts connected to the damper must be suspended or supported in order to bear the damper’s
weight too.
•
There must not be any flammable bodies on the damper surface and 50 mm away from the system
itself.
Periodic inspection and cleaning
Periodic inspection shall be performed in accordance with the requirements of the law or by the building
regulations or other local regulations.
In the absence of specific regulations (or to their complement), in accordance with point 8.3 of the EN
12101-8 standard, it is recommended to carry out the following controlactivities at intervals of no more
than 6 months: execute an opening and closing test and check the correct movement of the blade and the
correct functioning of the microswitches (limit switches). Blade opening time shall be not more than 60
seconds. Blade closing time shall be not more than 60 seconds.
Together with the control activities, it is recommended to visually verify the absence of corrosion, the
integrity of the electrical wiring and the sealing of the construction support. Damper cleaning is included
in the ordinary maintenance activities of the ventilation ducts. Smoke control dampers can be cleaned
with a dry or wet cloth. In the case of resistant dirt, it is possible to use normal household detergents. If
prescribed for the type of building, it is possible to use disinfectant detergents. The use of detergents or
mechanical abrasive cleaning systems is not permitted. These indications comply with the standards EN
12101-8 annex B and EN 15423 annex C.
