EB 3135-2 EN
35
Malfunctions
8.1 Decommissioning and
removal
Risk of bursting in pressure equipment.
Regulators and pipelines are pressure equip
-
ment. Improper opening can lead to bursting
of the regulator.
− Before starting any work on the regulator,
depressurize all plant sections affected as
well as the regulator.
−
Drain the process medium from all the
plant sections affected as well as the regu
-
lator.
− Wear personal protective equipment.
Risk of fatal injury due to electric shock.
Î
Before performing any work on the de
-
vice and before opening the device, dis-
connect the supply voltage and protect it
against unintentional reconnection.
Î
Only use power interruption devices that
are protected against unintentional re
-
connection of the power supply.
Risk of burn injuries due to hot or cold com-
ponents and pipeline.
Regulator components and the pipeline may
become very hot or cold. Risk of burn inju-
ries.
−
Allow components and pipelines to cool
down or warm up to the ambient tempera-
ture.
− Wear protective clothing and safety gloves.
DANGER
!
DANGER
!
WARNING
!
Risk of personal injury due to residual pro-
cess medium in the regulator.
While working on the regulator, residual
process medium can escape and, depending
on its properties, may lead to personal in-
jury, e.g. (chemical) burns.
Wear protective clothing, safety gloves and
eye protection.
8.1.1 Decommissioning
Observe the relevant safety regulations on
mounting or removing the electric actuator.
To decommission the regulator for service
and repair work or disassembly, proceed as
follows:
1.
Close the shut-off valve on the upstream
side of the valve.
2.
Close the shut-off valve on the down
-
stream side of the valve.
3.
Completely drain the pipelines and
valve.
4.
Depressurize the plant. Shut off or dis
-
connect the control line.
5. If necessary, allow the pipeline and de-
vice to cool down or warm up to the am-
bient temperature.
6. Remove the valve from the pipeline.
WARNING
!
WARNING
!
Summary of Contents for 2489/58 Series
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Page 43: ...EB 3135 2 EN 43 Certificates 3...
