FDB2 FIRE AND GAS DAMPER - Halton

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FDB2 Installation, operation and maintenance instructions Version: 10 Date: 19.12.2012 5. MAINTENANCE 5.1. PREVENTATIVE Regularly the damper shall have a functional test, to ensure that the blades are opening and closing satisfactorily. This test should also confirm that local (and possibly remote) indicators show the correct status of the damper. The recommended schedule of functional testing: Once a month. A complete visual and functional test shall be scheduled annually. This inspection should include a check on the blades inside the duct for any dirt or foreign matter. Remove the dirt (if found) and clean the inside of the damper housing. All electrical and/or pneumatic components shall be checked for any sings of failure. Components found, which are preventing the damper from operating satisfactorily, should be replaced. The recommended schedule for fusible link package change: Every five years It is recommended that the fusible link rod that goes from the fusible link to the limit switch/pneumatic valve (see drawing below) is sprayed with “PRF Teflube or similar” annually. 5.2. SERVICE- AND MAINTENANCE INSTRUCTIONS The electrical and compressed air power sources, used in some of the components of the fire damper, are at a level high enough to be dangerous. Before carrying out any service, maintenance and/or repair work, the appropriate power sources must be isolated and checks shall be made to ensure that safe conditions exist. Whenever work is to be carried out on motive plants or equipment, the fuses or at least the main switch, covering this item, should be removed/turned off as an added safety. Main sales office & factory Tel. +358 (0)2079 2200 Fax. +358 (0)2079 22060 http://www.haltonmarine.com Page 16 of 21
FDB2 Installation, operation and maintenance instructions Version: 10 Date: 19.12.2012 5.3. CORRECTIVE On standard Halton fire damper all electrical and/or pneumatic components are mounted on one base panel to ease the corrective activities. Isolate electrical- and/or instrument air supply from the damper, before any corrective action can be executed. How the repairs and/or replacement of components shall be executed are described and indicated hereafter. ELECTRICAL MODELS Failure Possible cause Remedy Damper does not open Supply power not available Check supply power lines Fire damper controls are inhibited (alarm is on) Check the inhibit controls and reset the controls if conditions are safe Operating mechanism is jammed Check the activating mechanism for any foreign matter and clean if necessary Fusible link is broken Check both fusible links and replace if broken (one inside damper, other inside junction box) Also check the operation of fusible link limit switch Fire damper blade is blocked Clean the insides of the damper casing Damper does not close Fusible link limit switch blocked Check fusible link limit switch Spring operation fails Check function of the Actuator Operating mechanism is jammed Check the activating mechanism for any foreign matter and clean if necessary Fire damper blade is blocked Clean the insides of the damper casing PNEUMATIC MODELS Failure Possible cause Remedy Damper does not open Instrument air not available Check instrument air lines Check air supply valves Check three-way valve Instrument air pressure too low Check instrument air lines Check instrument air filters Check instrument air reducers Fire damper controls are inhibited (alarm is on) Check the inhibit controls and reset the controls if conditions are safe Operating mechanism is jammed Check the activating mechanism for any foreign matter and clean if necessary Fusible link is broken Check fusible link and replace if broken Fire damper blade is blocked Clean the insides of the damper casing Damper does not close Instrument air vent blocked Check automatic vent and clean the vent opening Spring operation fails Check function of the spring (inside the Actuator) and replace spring/Actuator if necessary Operating mechanism is jammed Check the activating mechanism for any foreign matter and clean if necessary Fire damper blade is blocked Quick exhaust valve is not functioning Clean the insides of the damper casing Check and clean the quick exhaust valve or replace if necessary Main sales office & factory Tel. +358 (0)2079 2200 Fax. +358 (0)2079 22060 http://www.haltonmarine.com Page 17 of 21
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FDB2 FIRE AND GAS DAMPER - Halton

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