Samson series 43, Translation Of Original Instructions

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8-2 EB 2430 EN
Malfunctions
8.2 Emergency action
Plant operators are responsible for emergen-
cy action to be taken in the plant.
We recommend removing the regulator and
control thermostat from the pipeline before
repairing it.
In the event of a regulator or control thermo-
stat malfunction:
1. Close the shut-off valves upstream and
downstream of the regulator and control
thermostat to stop the process medium
from flowing through the regulator.
2. Perform troubleshooting (see sec-
tion 8.1).
3. Rectify those malfunctions that can be
remedied based on the instructions
provided here and in the documents
listed under 'Referenced documentation'
in the 'Safety instructions and measures'
section. Contact SAMSON's After-sales
Service in all other cases.
Putting the regulator back into operation
after a malfunction
See the 'Start-up' section.
The malfunctions listed in section 8.1 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 to rectify the fault.
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 support
you in drawing up an inspection and test
plan for your plant.
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