40
RDT-43-0921
®
NORD
fire
|
FDMA-PM
www.etsnord.com
Fig. 42 Embedding/ fixing the damper
Protecting the damper against buckling,
above all when there are big diameters and sizes of fire dampers!
WRONG! Brace with wooden blocks
13.3 To ensure reliable fire damper function it is necessary to avoid blocking the closing mechanism
and contact surfaces with collected dust, fibre and sticky materials and solvents.
14. Entry into service and revisions
14.1 Before entering the dampers into operation after their assembly and by sequential checks, the
following checks must be carried out. Visual inspection of proper damper integration , inside
damper area, damper blade, contact surfaces and silicon sealing. Check of thermal protective
fuse and closing mechanism. Check the closing function of the damper blade. This can be done
by removing of thermal fuse from damper body.
Before entering the dampers with actuating mechanism into operation after their assembly and
by sequential checks. Check of blade displacement into the breakdown position "CLOSED" can
be done after cutting off the actuating mechanism supply (e.g. by pressing the RESET button at
the thermoelectrical starting mechanism BAT or cutting off the supply from ELECTRICAL FIRE
SIGNALISATION). Check of blade displacement back into the "OPEN" position can be done af-
ter restoration of power supply (e.g. by releasing the RESET button or restoration of supply from
ELECTRICAL FIRE SIGNALISATION). Without power supply, the damper can be operated
manually and fixed in any required position. Release of the locking mechanism can be achieved
manually or automatically by applying the supply voltage. It is recommended to provide peri-
odical checks, maintenance and service actions on Fire Equipment by Authorized persons. The
authorized persons can be trained by Producer, or by authorized Distributor. All effective safety
standards and directives must be observed during fire damper assembly.
For regular or exceptional inspection of interior of fire damper, micro-camera device can be
used. On each fire damper is ispection hole. In the case of inspection by camera, take out the
black rubber cap, insert the camera inside the damper, check interior and at the end of inspec-
tion, put the rubber cap back tightly to cover the empty hole.
14.2 Before entering the dampers with manual control (design .01, .11, .80) into operation after their
assembly and by sequential checks and following checks must be carried out.
Verification of closing device and thermal fuse:
When you verify functionality in position "CLOSED" shall be made following:
Adjustment of damper blade in position "CLOSED" shall be made following:
• Damper is in „OPEN“ position.
• By pressing control button mechanism, you close damper in "CLOSED" position.
• Check damper blade adjustment in "CLOSED" position.
• Closing must be strong and control lever must be in "CLOSED" position.
• If closing is not sufficiently strong and damper control lever is not in "CLOSED" position, you
must contact manufacturer and order new mechanism.
