Mandik FDMB Installation Instructions Manual page 28

14. Before entering the dampers into operation after their assembly and by sequential checks, the following
checks must be carried out for all designs.
Visual inspection of proper damper integration, inside damper area, damper blade, contact surfaces and
silicon sealing.
Inspection hole disassembly: release the covering lid by turning the wing nut and while turning the lid
right or left release it from the security belt. Then tilt the lid and remove it from its original position.
15. Before entering the dampers with manual control into operation after their assembly and by sequential
checks, checks according 14. and following checks must be carried out.
Check of thermal protective fuse and closing mechanism.
Exert pressure on double arm initiation lever with a spring to release the control lever and check its
displacement into the "CLOSED" position. Closing must be smart and the control lever must be firmly
locked with a pawl. In case that the closing is not smart enough and the control lever is not locked with
the pawl in the "CLOSED" position, higher pre-stretch of the closing spring must be set using a ratchet
wheel.
Proper function of the thermal fuse can be checked when the fuse is removed from the starting
mechanism. The initiation lever must be turned over and control lever is moved to position "CLOSED".
If this is not possible, then the starting mechanism spring must be checked or the base plate must be
replaced. The base plate is attached to the damper body with M5 screws.
Displacing the damper blade into "OPEN" position is done the following way:
Release the pawl exerting pressure and return the control lever into the second outlaying position where
the lever is hold by the initiation lever.
In case of the flap valve with an electromagnet check the control lever displacement into the "CLOSED"
position after connecting to power supply.
16. Before entering the dampers with actuating mechanism into operation after their assembly and by
sequential checks, checks according 14. and following checks must be carried out.
Check of blade displacement into the breakdown position "CLOSED" can be done after cutting off the
actuating mechanism supply (e.g. by pressing the RESET button at the thermoelectrical starting
mechanism BAE 72B-S or cutting off the supply from ELECTRICAL FIRE SIGNALISATION). Check of
blade displacement back into the "OPEN" position can be done after restoration of power supply (e.g.
By releasing the RESET button or restoration of supply from ELECTRICAL FIRE SIGNALISATION).
17. Manual operation
Without power supply, the damper can be operated manually and fixed in any required position. Release
of the locking mechanism can be achieved manually or automatically by applying the supply voltage.
18. It is recommended to provide periodical checks, maintenance and service actions on Fire Equipment by
Authorized persons schooled by Producer.
19. All effective safety standards and directives must be observed during fire damper assembly.
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