mcr-PROLIGHT vents
TYPE
:
DVP,
DVPS
O
PERATION AND MAINTENANCE MANUAL
Page 18 of 30
Fig. 27
Pneumatic actuator
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. 23).
3. Lower the vent leaf.
4. Check the leaf closure state.
5. Repeat actions 2-4 for the other leaf.
6. Insert a new CO
2
cartridge in the thermal trigger or alarm box.
7. Replace the thermal fuse (alcohol vial (2)) if required.
8.2. Electric smoke exhausting 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.
spindle engages
5
a/ type PUAV (K+G)
b/ type PVZ (Jofo)
spindle disengages
