mcr WIP PRO
multi-blade fire damper
„
MERCOR” S.A. –
All rights reserved to modifications without prior notice
4/25
4. DESIGN AND OPERATING PRINCIPLE ____________________________
Design ____________________________________________________________________________
The mcr WIP PRO multi-blade fire dampers comprise a casing with a rectangular cross-section (depending on the
version). Construction of the WIP PRO consist of:
-
Casing of the damper, made of galvanized or stainless steel sheet (2 sections divided with fire-retardant board),
covered from outside with refractory board and C-shape profiles made of galvanized steel (thickness: 1,25mm);
whole casing is reinforced from both sides with corners made of flat steel with thickness: 2 mm
-
Damper blades rotating around its own axis. Axis is made from 2 steel pivots - each pivot is placed in a brazen
sleeve fastened to the fire damper vertical side wall (H). (each blade is made of 2 refractory boards 20 mm
thick, shifted against each other)
-
An intumescent gasket and a ventilation gasket, fastened with staples, which is placed
o
n entire length of
damper blade
-
Release mechanism (actuated by remote control or automatically after activation of the thermal release)
-
Vertical side wall of damper with actuator secured with refractory board
-
Intumescent and ventilation gaskets (inside of the casing – on the vertical damper side wall “H”)
-
A steel shield of actuator in omega letter shape, installed on side “H” of the damper
-
Limit profiles
made of galvanized or stainless steel, which are restricting movement of the damper blade, placed
inside of casing surface. Profiles are covered with ventilation seal.
Operating principle
_______________________________________________________________
The operating principle and way of working of the mcr WIP PRO multi-blade fire dampers depend on their application
versions:
shut-off fire dampers – mcr WIP PRO/S
In the normal operating position the dampers are open. Closing of the dampers (to the safety position) follows:
automatically, by tripping the thermoelectric trigger
manually, by pressing the control button on the thermoelectric trigger
remotely, by tripping an electric axial actuator with a return spring caused by isolation
from the voltage supply
automatically, by tripping the thermal trigger and the driving spring
shut-off fire dampers for fire ventilation systems – mcr WIP PRO/V
In the normal operating position the dampers are closed. Opening of the dampers (to the safety position) 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
shut-off fire dampers for mixed fire ventilation systems – mcr WIP PRO/V-M
In normal operation the dampers are closed or open, depending on the function carried out. Opening / closing of
the dampers (to the safety position) 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
transfer fire dampers – mcr WIP PRO/T
In the normal operating position, the dampers are open. Closing of the dampers (to the safety position) follows:
automatically, by tripping the thermoelectric trigger
manually, by pressing the control button on the thermoelectric trigger
remotely, by tripping an electric axial actuator with a return spring caused by isolation
from the supply voltage
automatically, by tripping the thermal trigger and the driving spring
relief fire dampers – mcr WIP PRO/T-G
In the normal operating position, the dampers are open or closed, depending on the function carried out.
Opening / closing of the dampers (to the safety position) follows:
remotely, by tripping an electric axial actuator with a return spring caused by isolation
from the supply voltage. The actuator has no thermoelectric trigger.
Proper performance manual check of dampers with electrical actuator for maintenance purposes can be done by
using a special hex wrench. The key should be placed in marked socket on the actuator. Thanks to the rotation of
the key, damper blade can be placed in desired position. Rotate the wrench slowly, smoothly and carefully. Rotating
the wrench too fast or too rapidly may damage the internal actuator gear or the power transmission system.
CAUTION
Never pull directly on the damper blade to open or close the device. This may result in damage of
the self-locking driving gear of the damper, and is not covered by warranty.
