NRWG Multi-Leaf Damper Models JK-180MB / JK-190
Technical
documentation
Processing |
Construction subject to change
No return possible
Version: 2016-08-02 | Document: 09/53 | Page 4
PROCESSING
Housing
Profiled galvanised sheet steel 1.5 mm
Dimensionally stable
JK-180MB - for flush-mounted installation
with 180 mm frame depth and mounting plate
JK-190 - for surface-mounted installation
with 190 mm frame depth
Bores for fastening the accessories
Blades
Hollow-body aluminium blades
Flow-favouring and torsion-resistant
Jointly adjustable in opposite directions
Seal
EPDM rubber profile
Bearings
Sintered bearing
Gear wheels
Plastic PA6
Arranged on one side
The flow-favouring aluminium blades are jointly adjusted
in opposite directions via external plastic gear wheels
A cover plate protects the gear wheels from external con-
tamination and reduces the risk of injury to persons during
assembly and maintenance
Temperature resistance
Temperature-resistant 0 °C…+80 °C
Operational safety up to +300 °C according to EN 12101-2
Allowed ambient temperature actuator -20 °C to +50 °C
REMARK
The plastic PA6 has the property of changing its dimensions
as a function of the relative humidity. The gear wheels are
preconditioned for normal climate 23 °C, 50% of relative
humidity. If the multi-leaf damper is to be used in rooms in
which the relative humidity is permanently <20% or >80%, it
is recommended using stainless steel gear wheels made of
V2A instead of plastic gear wheels. Extra charge upon re-
quest.
NOTE
For maintenance, service, retrofitting, etc., the required ac-
cess must be ensured on site.
