Malfunctions - Samson 46-7 Mounting And Operating Instruction

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.
DANGER
!
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.
30
WARNING
!
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.
WARNING
!
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.
EB 3131-1 EN