Smoke and Heat Exhaust Control Unit mcr 9705 – User Instruction Manual
Strona 8 z 24
There are following sizes of overload circuit breaker:
3. Exploitation
3.1. Normal operation
On the front panel (Pic. 1) are placed following indicator lights:
yellow diode - READY
green diode - POWER SUPPLY
Description of the optical indicators on the front panel:
mcr 9705 is a maintenance-free device. It requires constant 230 V mains power
supply. In case of power shortage caused by mains failure, the installed batteries will
ensure 72-hour emergency power supply. Any power outage exceeding 72 hours
can result in permanent damage of the batteries.
3.2. Non-emergency ventilation (daily ventilation)
For smoke vents equipped with electrical smoke exhaust actuators and the
system with ventilation pushbuttons, it is possible to open smoke vents for non-
emergency ventilation of the building in the normal usage conditions. When the
pushbuttons ( or ) are pressed and held down for at least 1 s, the vents are being
open or close, respectively.
Pushing the button will always cause the smoke vent to be closed
completely. The function of the button depends on the position of the SW1-5 switch
in the unit module (Pic. 3 item 27):
SW1-5 OFF - The vent opens only when the button is pressed (default
setting), but no longer than for the time specified by the settings
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