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F-B90
Technical Parameters
Durability test
50 cycles/manually operated activation mechanism – with no change of the required properties
10000 + 100 + 100 cycles/actuator operated activation mechanism – with no change of the required properties
10000 cycles, actuator controlled for "SR" actuator (45 … 60 degrees rotation) - with no change of the required properties
Fire testing pressure
Underpressure up to 300 Pa
Safety position
Closed. (In fire scenario the damper closes via spring in actuator or spring in manual mechanism)
Airflow direction
Both directions
Allowed air velocity
Damper can still operate at max. 12 m/s. Air without any mechanical or chemical contamination
Side with fire protection
Depending on installation classification: From both sides (i <-> o)
Repeated opening
Suitable for daily check procedure. It is not possible to operate the device after reaching activation temperature.
Activation Temperature
Manually operated: 74 °C as standard by means of a spring after the melting of the thermofuse and/or after smoke sensor detection.
Actuator operated: 72 °C as standard by means of the spring after current interruption in the electro-thermal fuse and/or after smoke
sensor detection.
Operational temperature
Minimum: 0 °C
Maximum: 60 °C for 74 °C and 72 °C thermofuse
Environment suitability
Protected against weather disruptions, with temperature above 0 °C, up to 95% Rha, (3K5 according to EN 60721-3-3)
Open/Closed indication
Manually operated microswitches - Activation types H2
Actuator operated built-in microswitches - Activation types B230T/G230T up to BSD24T/GSD24T
Closing/Opening time
Manually operated < 10 s, actuator operated < 20 s
Inspection possibility
Types fitted with grille: through Grille. Inspection door for connection and actuator access. Types without grille connected from both
sides to duct: necessary to create inspection opening in the connected duct or attach removable or flexible part.
Maintenance
Not required. Dry cleaning if demanded by law in the country in which the dampers are installed.
Revisions
Determined by law in the country in which the fire dampers are installed but at least every 12 months.
Allowed pressure
1000 Pa
Blade tightness (STN EN 1751)
Class 3 as standard
Tightness of the housing (STN EN 1751)
Class C as standard
Conformity with EC directives
2006/42/EC Machinery Directive
2014/35/EU Low Voltage Directive
2014/30/EU Electromagnetic Compatibility Directive
Modulated Actuator
Can be set to any position when opening the blade - see types of activation mechanisms B24T-SR/G24T-SR
Driving actuator types
Содержание F-B90
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