Preparing For Disassembly - Honeywell HON 512 User And Maintenance Manual

9.1

Preparing for disassembly

Pressurized parts
Gas regulating line sche-
matic diagram
Establishing the
depressurized status
Purging the lines with
nitrogen
HON 512 with HON 650 pilot user manual
Risk of serious injury posed by pressurized components moving in an uncontrolled manner
when handled improperly.
If not handled properly or in the event of a defect, gas can escape from pressurized compo-
nents under high pressure and cause serious injuries and even death. Before you start work-
ing on these components:
 Close all connections leading to the gas-carrying line.
 Establish a depressurized status. Residual amounts of energy must be depressurized as
well.
The numbers have the following meaning:
No. Meaning
1 Inlet stop valve armature
2 Inlet chamber blowdown line with shut-off device
3 Gas pressure regulator
4 Outlet chamber blowdown line with shut-off device
5 Outlet stop valve armature
Proceed as follows:
Step Description
1 Close the outlet valve (5).
2 Close the inlet stop valve armature (1).
3 Open the shut-off device in the blowdown line (4) in order for the pressure in the outlet
chamber to be relieved.
4 Open the shut-off device in the blowdown line (2) in order for the pressure in the inlet
chamber to be relieved.
5 Wait a few minutes so that the pressure in the entire gas pressure regulator (3) can be
relieved.
Purge all of the gas pressure regulator's lines with nitrogen before removing the device.
Decommissioning, storage, renewed start-up, disposal
145