Fig 6-7 GVU-OD: Schematic Diagram for Installation
6.5.5 GVU control panel
The control system controls all functions of the GVU. The control system sends a signal to the
solenoids that control pneumatically activated valves. A human machine interface (HMI) is
installed on the GVU control panel Figure 6-8. With the GVU Control Panel, you can monitor:
1 The status of the GVU.
2 The valve positions.
3 The data that comes from the sensors.
4 Possible alarms.
NOTE: The GVU control panel does not obey the ATEX standards and is installed in a
different room.
X92DF
AA00-8014-00AAA-042A-A
Operation Manual Gas valve unit and external gas supply system
Winterthur Gas & Diesel Ltd.
- 281 - Issue 002 2020-08
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