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NOTICE
!
Risk of leakage and regulator damage due to excessively high or low tightening
torques.
Observe the specified torques when tightening regulator components. Excessive tight-
ening torques lead to parts wearing out more quickly. Parts that are too loose may
cause leakage.
Î Observe the specified tightening torques (see 'Tightening torques' in Annex).
Risk of excess pressure damaging plant sections due to construction-related seat
leakage through the regulator.
Î Always install a safety device (e.g. safety excess pressure valve or safety relief
valve) in the plant.
Risk of regulator damage due to the use of unsuitable tools.
Certain tools are required to work on the regulator.
Î Only use tools approved by SAMSON.
When in doubt, consult SAMSON.
Risk of the process medium being contaminated through the use of unsuitable lubri-
cants and/or contaminated tools and components.
Î Keep the regulator and the tools used free from solvents and grease.
Î Make sure that only suitable lubricants are used.
Incorrect control due to the formation of ice on the regulator.
Medium temperatures below 0 °C may cause ice to form on the regulator, depending
on the air humidity. This may affect, in particular, the functioning of the plug or control
thermostat stem guide.
Î Prevent the formation of ice by taking appropriate precautions (e.g. enclosure,
trace heater etc.). The plant operator is responsible for selecting and implementing
appropriate precautions. See the 'Installation' section.
EB 2173 EN
Safety instructions and measures
1-7
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