Honeywell HON R100NG Series User And Maintenance Manual page 46

Overview
Establishing the depres‐
surized status
Purging the lines with
nitrogen
User manual for HON R100 gas pressure regulator with HON P095NG pilot
Schematic diagram:
The numbers have the following meaning:
No. Meaning
1 Inlet stop valve armature
2 Inlet pressure gauge
3 Gas pressure regulator
4 Loading pressure gauge
5 Blowdown line shut‐off device
6 Outlet pressure gauge
7 Outlet stop valve armature
Proceed as follows:
Step Description
1 Close the inlet valve (1).
2 Close the outlet valve (7).
3 Depressurize the pilot.
Turn the set screw on the pilot clockwise until the pressure in the regulator is equalized.
4 Open the blowdown line's (5) shut‐off device to discharge the pressure between the inlet
and the outlet.
All the gas pressure regulator's lines must be purged with nitrogen before the device is re‐
moved.
Maintenance
46