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Version 2023-06-07
Smoke extraction damper - SEDM-D
TPM 155/22
SEDM-D rearming motor design
SEDM-D hand-operated design
Operating conditions
Both declared performance and faultless operation are ensured under the following conditions:
■
The damper equipped with one of the grilles available
■
Maximum vacuum up to 1500 Pa or overpressure up to 500 Pa
■
Rearming shall be carried out without air flow and without air pressure
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The dampers are suitable for vertical installation only
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Range of activation voltage and rearming motor supply voltage shall be respected; dimensioning of voltage sources and of
connecting cables shall fit the electrical parameters of the damper
■
Connecting cables shall not physically impede free movement of moving parts and sub-asemblies
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Damper shall be always kept closed with the exception of short periods of installation, commissioning and functional tests
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The rearming motor shall not be used to act against the air pressure or another external force
■
Dampers are designed for macroclimatic areas with mild climate according to EN IEC 60 721-3-3 ed.2., class 3K22.
(Environment 3K22 is typically protected place with regulated temperature) and with a temperatu
re range of -25°C to 50°C
Connecting cables shall be guided from a pre-punched hole in
one of the corners of the damper frame to the junction box
using delivered cable clips. The junction box contains a
universal 10-position screw terminal. Damper supply voltage
and terminal block positions are printed inside the junction
box. Depending on the damper design configuration and
connecting cables available, some terminal positions may
stay void. Aditional junction box with 6-position screw
terminal is present for bipolar end-switch module.
The damper is equipped with a restraint mechanism keeping
the damper closed. The restraint mechanism includes a
permanent magnet combined with an electric coil with
magnetic poles opposite to those of the permanent magnet.
In case of the activation of the damper, the coil magnetic field
compensates the magnetic field of the magnet and thus, the
restraint mechanism lets the damper open. The activation
signal represents a simple switching the voltage ON. The
damper may be equipped with position end-switch module
with end-switches indicating the damper blade position open
or closed. The damper is manufactured in hand-operated
rearming design or electric motor rearming design. Rearming
means getting the damper blade from the position open
(security) to the position closed (stand-by).
II. DESIGN
