mcr DOR smoke control dampers
„MERCOR” S.A.
– The company reserves the right to modify and change the document.. Version: mcr DOR 22.05.04.1
4/16
Function
The operating principle and behavior of the mcr DOR dampers depend on their application versions::
Smoke control dampers for fire ventilation systems
– mcr DOR
In the normal operating position the dampers are closed. The dampers are opened as follows:
remotely, by tripping an electric axial actuator without a return spring, as a result of applying the
supply voltage to the actuator in the right manner.
remotely, by tripping the electromagnetic release and a spring as a result of applying the voltage.
CAUTION
Never pull directly on the damper isolation partition to open or close the device. The damper should
not be opened before installation in the fixing structure. Doing so may damage the drive
mechanism and partition and is not covered by the warranty. To close the damper partition, there
are handles located on the partition. Before closing the partition, unlock it. To do this, gently pull
the movable blocking element until it is moved to the 90 ° position, then start closing the door by
holding the handles. It is recommended that the dampers be opened and closed while the
ventilation system remains turned off.
1
2
3
1. Damper mcr DOR BxH
2. Handles
3. Mechnical locks
Handles and mechanical locks.
Release and control mechanisms
mcr DOR dampers are equipped with a EMxxD-type trigger and control mechanisms. The mechanism is
equipped with a special lever-caming system, 24VDC or 230 V AC electromagnetic trigger and drive
springs placed directly on the hinges of the damper partitions. After removing or providing the supply
voltage, the mechanism is slowed down, causing the device to work.
