Series Blauberg BSK...1A

Use

• A fire safety damper prevents the spread of smoke and fire via ventilation and air conditioning system ducts in the event of fire.
• Such units are installed in air ducts located in fire-separation walls and ceilings. The fire resistance rating according to EN 1366-2 is EIS 60 or EIS 120.

Mounting

• During the fire safety damper installation make sure that the release mechanism and the inspection hole face an easily accessible side of the wall or ceiling. This will ensure convenient control of the thermally sensitive release mechanism and its internals.
• The damper can be embedded into brick or concrete walls with the appropriate fire resistance rating.
• Wooden spreader bars should be used to avoid casing deformation during the installation.

• Upon completing the installation remove the wooden spreader bars.

• The damper may not be installed:
  • Into air ducts and on premises rated explosion and fire safety category A and B.
  • Into air ducts of local intakes for flammable and explosive mixtures.
  • Into systems which are do not undergo periodic cleaning pursuant to the established regulations for prevention of flammable deposit buildup.

Design

• The BSK...1A series dampers are made in the general-purpose industrial version with a minimized variety of hardware components using low-alloy galvanized steel. The flap is made of fire-resistant material (vermiculite) with thermoexpansive fireproof sealing.
• The duct design implies two connection ports for integration into a ventilation duct (duct system).

The BSK...1A fire safety damper with a mechanical actuating unit, a thermal fuse and a return spring

Control and modifications

• The BSK...1A series dampers are equipped with a mechanical actuating unit with a thermal fuse and a return spring.
• The fire safety damper remains open in the protective position. The damper is set to the operating position upon the thermal fuse breakdown resulting from a temperature increase. In the event of fire, the fusible element will melt upon the temperature reaching 72 °C and the spring will set the flap to the closed position.