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Before putting the dampers into operation and during subsequent function checks, the following
checks must be carried out for all designs:
Visual check of correct installation of the damper, of the damper interior, of the damper blade, of
the seating faces of the blade and of the silicone seal.
Disassembly of inspection hole cover: Remove the button-headed screws (2) and tilt the cover
to take it out.
For dampers with mechanical control (designs .01, .11, .80), the following checks must be carried out:
Move the damper blade to "CLOSED" position as follows:
• The damper is in "OPEN" position.
• Press the control button of the mechanism to move the damper to "CLOSED" position.
• Check the damper blade shift to "CLOSED" position.
• The closing must be brisk; the control lever and the blade in the damper must be in "CLOSED"
position.
Move the damper blade to "OPEN" position as follows:
• Turn the control lever by 90°.
• The lever will automatically lock in "OPEN" position.
• Check the damper blade shift to "OPEN" position.
• To check the function and the condition of the thermal fuse, you can dismount the whole
mechanism from the fire damper body - the mechanism is fixed to the damper body with four
M6 screws.
• By removing the thermal fuse from the holder of the fuse of the starting mechanism, check its
correct function.
• The mechanism size is marked with M1 to M4, according to the strength of the closing spring.
For the designs with actuating mechanisms, the following checks must be carried out:
Check the shift of the blade to "CLOSED" failure position after cutting off the power supply to the
actuating mechanism (e.g. by pressing the reset button on the thermoelectric starting mechanism
BAT, by cutting off the power supply from electrical fire signalization). Check the shift of the blade
back to "OPEN" position by restoring the power supply to the actuating mechanism (e.g. by
releasing the reset button, by restoring the power supply from electrical fire signalization).
The check of function of the damper with actuating mechanism can be carried out as follows:
a) by cutting off and restoring the power supply, e.g. by a signal from electrical fire signalization
b) directly on the installed damper, with the help of the button on the thermoelectric starting
mechanism BAT (simulating fuse tripping).
Before putting the dampers into operation and during subsequent function checks, the following
checks must be carried out for dampers with optical smoke detector, see section 17.1.:
The function checks of the optical smoke detector are to be carried out by employees of an
authorized organization who have corresponding electrotechnical qualification and have been
provably trained by the manufacturer. The function checks are to be carried out as a part of
function checks of the fire dampers, at least 1x a year.
For the function checks, the dampers should be moved to "CLOSED" position with the fan off or
with closed regulation valve situated between the fan and the fire damper.
