Instruction Manual

Installation Instruction
0473 SMB and shut off valve
ENGLISH
Safety mode box with shut off valve for CO2 Safety
System.
Important!
Retain this instruction manual for future
reference: Please read these instructions
carefully prior to start-up and use. Failure to
follow any of these instructions could void
product warranties. LogiCO2 assumes no
responsibility for claims arising out of improper
or careless use or handling of it’s products.
Technical specifications for SMB
Power supply: Via CO2 Sensor
Relays: 1A/24V AC/DC
Material: PC/ABS
Operating pressure: 0,15 to 30 bar / 2,2 to 435 Psi
Bursting pressure: >150 bar / 2 175 Psi
Treaded connection: 1/4” -18NPT
Dimensions (WxHxD): 78x78x37 mm / 3”x3”x1.5”
Ingress protection: IP55
Function
Safety mode box (SMB) with shut off valve is an
accessory for the Mk9 and Mk90 CO2 Safety System
that shuts off the CO2 gas distribution in case of a
leakage. It consists of a magnetic valve, electronics
box and cabling. The Shut off valve is designed for
usage of CO2 with a pressure of 0,15 to 30 bar or 2,2
to 435 Psi.
SMB has a 1 meter Cat5 cable from the electronics
box, with a blue RJ45 connector that is plugged in to
the blue alarm signalling output cable side from either
the Mk9 or Mk90 CO2 sensors. When the CO2 sensor
indicates a high CO2 concentration, the magnetic valve
will shut off the CO2 gas distribution. The valve is fail-
safe (shuts off at power loss).
The magnetic valve should be installed as early as
possible in the CO2 gas distribution chain (close to
the CO2 tank) in order to avoid possible CO2 leakage
before the safety valve.
Install the electronics box in a suitable place where it is
mechanically protected. Remove the cover by turning
it counterclockwise 1/8 turn to access the mounting
screw holes.