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2. Usage as per specification
PSQ-E quarter turn actuators are exclusively designed to be used as electric valve actuators. They
are meant to be mounted on valves in order to run their motors.
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.
Supply voltage may only be switched on after the proper closure of the main cover or terminal box.
3. Storage
For appropriate storage, the following instructions have to be met:
Only store the actuators in ventilated, dry rooms.
Store the actuators on shelves, wooden boards, etc., to protect them from floor moisture.
Cover the actuators with plastic foil to protect them from dust and dirt.
Protect the actuators against mechanical damage.
4. Operating conditions
The standard actuators can be operated at ambient temperatures from -25°C to +70°C.
Ambient temperature range for modulating duty is from -25°C to +70°C.
The operating modes correspond to IEC 60034-1, 8 S2 for short cycle 20 min. S3/S4 control operation
1200 c/h – 25% ED at 25°C.
For protection against moisture and dust, the actuator enclosure rating is IP67 according to EN 60529.
To ensure the protection rating, the cover must be fitted correctly and the holding screws tightened
crosswise. The cable glands must be suitable for the cables and correctly fitted to the actuator.
When installing the actuators, leave enough space to permit cover removal (Figure 1).
Any installation position is allowed except “cover pointing downwards” (figure 2).
