9
2.2
Connecting the non‐return valve
For the best isolation effectiveness, the non‐return valve needs to be installed in proximity of the
risk zone which it is wanted to be isolated.
Step 1:
Connect the inlet and outlet to the duct system with the correct fasteners.
Step 2:
Make sure that the indicator is in the correct position (Figure: 11).
Figure: 11 Indicator Position
2.3
Precautions for a proper use
CAUTION!
−
It is strictly forbidden to open the inspection panel while the installation is running;
−
During maintenance keep the system disconnected and all the electrical equipment turned
off;
−
The valve should not be placed in an environment that could create a vibration in the
non ‐ return valve;
−
After the event of an explosion, do not unblock or manipulate the non‐return valve until the
explosion is completely extinguished. Check if the non‐return valve and its parts are working
properly. Clean the valve. Replace any parts that are damaged!
Make sure the indicator is inthis position
When the indicator is in this position, the
Valve is blocked, and it will block the airflow
