1. Safety
Please ensure that the detailed operating instructions and the chapter on "Safety" in particular have
been read and understood by all personnel involved in the installation, start-up, operation,
maintenance and repair of the actuators.
Caution! Dangerous electrical voltage can be present! Avoid personal or material damages by
observing applicable regulations and safety standards!
Danger! This sign warns of hazards posing a risk to health. Ignoring these instructions can lead to
injuries.
Attention! The cover may only be opened in non-hazardous areas and only in a dry environment.
Attention! Observe precautions for handling. Electrostatic sensitive devices.
2. Operating conditions
• The actuator PSF-M-EX is a stationary installed device for use in Ex zone 1, 2, 21 or 22. The actuator PSF-M-EX is
not suitable for use in zone 0 and zone 20.
• The electrical data shown on the type plate as well as the unit category for the place of use must be observed.
• The operator of an electrical system in a potentially explosive atmosphere must keep the equipment in proper
condition, operate it properly, monitor it and carry out maintenance and repair work. See also IEC/EN 60079-17 /
IEC/EN 60079-19.
• The units must be installed in such a way that the risk of electrostatic charging is minimised. The risk of
electrostatic charging depends on the installation location, if necessary the risk can be minimised e.g. by
protecting against direct air flow or monitoring the ambient humidity, for cleaning use a damp cloth.
• The actuators PSF-M-EX are built exclusively for use as electric valve actuators. They are intended for assembly
with valves and their motorised actuation.
• Any other use is considered to be non-compliant and the manufacturer cannot be held liable for any damage
resulting from it.
• The actuators can only be used within the limits laid out in the data sheets, catalogues and other documents.
Otherwise, the manufacturer cannot be held liable for any resulting damage.
• Usage as per specification includes the observance of the operating, service and maintenance conditions laid
down by the manufacturer.
• Not to be regarded as usage as per specification are mounting and adjusting the actuator as well as servicing.
Special precautions have to be taken while doing this!
• The actuators may only be used, serviced and repaired by personnel that is familiar with them and informed
about potential hazards. The specific regulations for the prevention of accidents have to be observed.
• Damages caused by unauthorized modifications carried out on the actuators are excluded from the
manufacturer's liability.
Please protect all of the power supply and control cables in front of the
terminals mechanically by using suitable measures against unintentional
loosening. Never install the power supply and the control cables together in
one line but instead please always use two different lines.
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