FDB2 FIRE AND GAS DAMPER - Halton

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FDB2 Installation, operation and maintenance instructions Version: 10 Date: 19.12.2012 PNL (pneumatic linear) type dampers dampers can be fitted with manual override handle. Main sales office & factory Tel. +358 (0)2079 2200 Fax. +358 (0)2079 22060 http://www.haltonmarine.com Page 14 of 21
FDB2 Installation, operation and maintenance instructions Version: 10 Date: 19.12.2012 4. INSTRUCTIONS FOR SPRING OPERATED DAMPER A) Under normal operating conditions the fire damper blade is held in the “open” position by the arm (pos 1) and connecting rod of fusible link (pos 2). The internal fusible link includes a fusible link (pos 2), which in turn holds a spring return connecting rod. This connecting rod holds the spring (pos 4) and fire damper in open position. B) The fusible link is temperature sensitive and when the air passing through and/or the air surround the fire damper reaches a temperature of approximately 74 º°C, the link will shatter. When the link smelts (pos 2) the connecting-rod is released and the spring (pos 4) will close the fire damper. °C) If you want close the damper manually pull the knob (pos 3) release and the external spring (pos 4) will close the fire damper. To reset the damper to close position pull the knob (pos 3) and rotate the arm counter-clockwise (pos 1) over the clamp up to the position of the connecting rod. Then set the shaft of the knob (pos 3) into the end section of connecting rod. WARNING: DURING RELEASE AND RESET OPERATION BE SURE THAT THERE IS NO RISK TO HURT YOURSELF!!! Main sales office & factory Tel. +358 (0)2079 2200 Fax. +358 (0)2079 22060 http://www.haltonmarine.com Page 15 of 21
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FDB2 FIRE AND GAS DAMPER - Halton

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