3
Basic safety notes
The actuators may only be operated by skilled and authorized operating personnel.
Make sure to follow all security advices mentioned in this manual, any national rules for accident prevention, as
well as the owner´s instructions for work, operation and safety.
The isolating procedures specified in these operating instructions must be followed for all work pertaining to the
installation, commissioning, operation, change of operating conditions and modes, maintenance, inspection,
repair and installation of accessories.
Before opening the actuator cover, ensure that mains supply is isolated and prevented from unintended re-
connection.
Areas that can be under voltage have to be isolated before working on them.
Ensure that the actuators are always operated in faultless condition. Any damage or faults, and changes in the
operational characteristics that may affect safety, must be reported at once.
Danger signs
The following warning symbols are used in this manual:
Caution! There is a general risk of damage to health and/or properties.
Danger! Electrical voltages may be present that are dangerous to life!
There is a risk of damage to health and/or properties with danger to lives.
Other notes
The motor surface may have elevated temperature when servicing, inspecting or repairing it immediately after
operation. Danger of burning the skin!
Always observe the relevant operating instructions when fitting PS accessories or operating the actuator with
PS accessories.
Connections for signal in- and output are double isolated from circuits that can be under dangerous voltage.
2.
Usage as per specification
The PSR-E-C quarter turn actuators are exclusively designed as electric valve actuators. They are meant to be
mounted on valves for motor-operation.
Any other use is considered to be not in accordance with standard specification, and the manufacturer cannot be
held liable for any damage resulting from it.
The actuators may not be used outside the limits laid out in data sheets, catalogs and order documentation.
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 adjustment of the actuator, and servicing.
Special precautions have to be taken while doing this!
The actuators may only be used, serviced and repaired by personnel that are 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.
Supply voltage may be switched on only after properly closing the main cover or terminal box.
