EB 3135-1 EN
11
Safety instructions and measures
1.3
Notes on possible property damage
NOTICE
!
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 dia-
phragm stem guide.
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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.
Risk of damage to the electric actuator due to the supply voltage exceeding the per
-
missible tolerances.
The electric actuators are designed for use according to regulations for low-voltage in-
stallations.
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Observe the permissible tolerances of the supply voltage.
Risk of actuator damage due to excessively high tightening torques.
The connection of the electric actuator (with process controller) must be tightened with
certain torques. Excessively tightened torques lead to parts wearing out quicker.
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Observe the specified tightening torques.
Risk of damage to the electric actuator due to incorrect connection of the voltage.
The electric actuator has terminals to retract the stem (eL terminal) and to extend the
stem (aL terminal).
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Do not apply a voltage to eL and aL at the same time.
Risk of damage to the electric actuator by turning it too far.
The actuator stem of the electric actuator can be adjusted manually.
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Only retract the actuator stem as far as the end position at the maximum.
