30
EB 3131-1 EN
Malfunctions
8 Malfunctions
The malfunctions listed in Table 6 are caused
by mechanical faults and incorrect regulator
sizing. In the simplest case, the functioning
can be restored following the recommended
action. Special tools may be required for re-
pair work.
Exceptional operating and installation condi-
tions may lead to changed situations that
may affect the control response and lead to
malfunctions. For troubleshooting, the condi-
tions, such as installation, process medium,
temperature and pressure conditions, must
be taken into account.
SAMSON's After-sales Service can help
during troubleshooting. Further information
is available in section 10.1.
We recommend removing the valve from the
pipeline.
Risk of bursting in pressure equipment.
Valves and pipelines are pressure equip-
ment. Improper opening can lead to device
components bursting.
−
Before starting any work on the device, de
-
pressurize all plant sections affected as
well as the valve. Disconnect or shut off the
external control line.
−
Drain the process medium from all the
plant sections affected as well as the valve.
−
Wear personal protective equipment.
Risk of personal injury due to residual pro-
cess medium in the valve.
While working on the valve, residual me
-
dium can flow out of the valve and, depend
-
ing on its properties, cause personal injury,
e.g. (chemical) burns.
−
If possible, drain the process medium from
all the plant sections affected and the
valve.
−
Wear protective clothing, safety gloves and
eye protection.
Risk of burn injuries due to hot or cold com-
ponents and pipelines.
Depending on the process medium, valve
components and pipelines may get very hot
or cold and cause burn injuries.
−
Allow components and pipelines to cool
down or warm up to the ambient tempera
-
ture.
−
Wear protective clothing and safety gloves.
DANGER
!
WARNING
!
WARNING
!
Summary of Contents for 46-7
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