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20220503 - LNNN00354 (4.0) Swegon reserves the right to alter specifications.
Actionair DWFX-F Installation Guide
The cassette mechanism is
completely removable from
the FireShield
Damper by manually
releasing the retaining clip.
This allows replacement of the cassette
without the use of tools
Simple hand operation enables the
damper curtain to be reset and latched
in the fully Open Position.
This increases the ease and speed with
which the FireShield Damper can be
reset following periodic functional
testing in accordance with British
Standard BS9999:2008 Code of
Practice for fire safety.
The thermal actuator in the form of
a helical memory metal compression
spring is produced from a special
Cu-Zn-AI brass alloy.
On temperature rise this expands and
at 72 °C, causes the FireShield damper
blades to release.
On cooling, the spring reverts to
the close-coiled state offering the
significant advantage of repeated
operation, unless it has reached
temperatures in excess of 170 °C,
where it will remain extended,
preventing reset.
Cassettes are only available for 72
°C. For Dampers where alternative
thermal link temperatures are required
a chain-link can be offered in place
of a cassette. Electrical release is only
available with a cassette i.e. 72 °C.
Please refer to Actionair Sales Office.
Please note: For dampers with
dimensions of 150mm and below
ensure that there is adequate access to
enable re-setting.
Self Latching Removable Release Mechanism
Cassette
Manual Operation
Manual Operation for periodic fun-
ctional testing in accordance with
BS9999:2008 Code of Practice for
Ventilation and Air Conditioning
Ductwork.
Thermal Actuator
Operation
Memory metal coil springs, specially
designed to fully expand at 72 °C and
actuate damper closure.
Remote Release Operation
Remote release operation to close the
FireShield Damper is by Bowden cable
with Manual action or Electrical 230V
AC or 24V AC and DC Electro Magnet
fail-safe action and independent of
the thermal actuator. Bowden outer
sleeve can be fitted from either side of
cassette.
Reset Operation
Single hand operation.
Each blade pushes the
latch back under spring
tension. On full blade
reset the latch springs out
to secure.
Release Mechanism
Support Bracket
Latch
Retaining clip
Cassette
Set Position
Non Access
Access
