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| Round fire damper manual 02/2021
SOLID AIR ®
CLIMATE SOLUTIONS
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T +31 598 36 12 21
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www.solid-air.com
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ELECTRIC ACTUATOR M24-S, M230-S,
M24-S-ST
Damper is delivered in closed position. When electric
actuator is connected to the power supply, damper
blade will open. When the damper reaches the end
position (damper open), the electro motor will stop.
Closing fire damper takes place automatically when
a power failure occurs. Thermal tripping device that
comes with fire damper causes power circuit break at
a temperature of 72 °C. If checking is needed for
proper functioning of fire damper, pushing the
switch on the thermal tripping device will close
damper. When switch on tripping device is released,
the damper will open.
Actuators
CONTROL
Damper can be opened without connecting to
a voltage with enclosed handle by turning it in the di-
rection of the arrow on electric actuator (clockwise).
Damper can be locked in the desired position by fast
turning handle a quarter of a turn (counterclockwise)
for Belimo BF, and by puling brake on Belimo BFL and
BFN.
To unlock the electro motor, turn handle clockwise
for a quarter of a turn for Belimo BF, or release brake
for Belimo BFL and BFN. After release, damper will
be closed by return spring. When damper is opened
manually, electric actuator will not move the damper
into closed position in case of power failure.
