mcr-PROLIGHT
VENTS
,
TYPE
:
C,
E,
NG-A
O
PERATION AND MAINTENANCE MANUAL
Page 19 of 31
Fig. 26 PUAV pneumatic actuator - lock releasing direction
For smoke exhausting purpose, the pneumatic actuators have an internal lock that
prevents the closing of a fully open vent leaf.
Method of closing the vent leaf after emergency opening for systems without remote
shutting function:
1. Release CO
2
from the system by screwing the cartridge out of the thermal trigger or
alarm box
(note: the system contains high pressure - undo slowly, note: the
cartridge may cause frostbite)
.
2. Release the
actuator locks (5)
by raising them towards the working movement of
the actuator (as shown on the arrow on fig. 25).
3. Lower the vent leaf.
4. Check the leaf closure state.
5. Insert a new CO
2
cartridge in the thermal trigger or alarm box.
6. Replace the thermal fuse (alcohol vial (2)) if required.
8.2. Electric control
Leaf opening control system employing 24V= electrical actuator for smoke exhausting is
delivered preassembled in the vent. Preparing it for operation consists in connecting the
eye bolt of the electrical actuator with the pin of the hook console, and adjusting it properly
so that the console securely latches on the T bolt, and the electric actuator is disabled after
the vent shutting by the limit switch, and not the overload switch.
Method of connection of mcr-W / mcr-WSG actuator (cables polarity):
brown cable +
brown cable –
blue cable –
blue cable +
mcr9705, mcr0204 smoke exhausting and ventilation control units and mcrR0424 and/or
mcrR0448 expansion modules must be used for controlling and supplying mcrPROLIGHT
mcr-W/mcr-WSG vents.
It is recommended that the vent leaf deflection effected by 24V actuator up to ventilation
function does not exceed 30°, which is equivalent to opening time of about 20 s.
8.3. Ventilation function
Ventilation function may be achieved using 2 basic methods:
by employing pneumatic actuators with appropriate installation,
by using an additional electrical actuator powered by 230V~ voltage (drawing
below).
5
spindle engages
spindle disengages
