Putting the pressure control panel into a safe condition

In the event of interruptions in operation for more than 48 hours or pending maintenance or servicing, the pressure control panel must be put into a safe condition.

The process gas source must be connected during flushing (see "Connecting the process gas source"). Also observe the "Preparations for commissioning" chapter.

1. Close process gas source and route off the acetylene located in the pressure control panel via the connected consumers.
2. When this pressure relief or routing-off process is completed, the two pressure gauges on the pressure regulator must display the value "zero". Visual inspection!
3. Close pilot pressure source valve.
4. Vent the outlet pressure by opening the venting valve VV.
5. Vent the pressure regulator of the pilot gas and the pilot pressure regulator by turning the handwheels anti-clockwise.
6. Close the ball valve in the pressure control panel outlet.
7. Detach the access line pilot pressure gas from the pilot pressure regulator inlet.