4. Principle of operation ............................................................................................................................................... 4

5. Operating conditions and installation position ......................................................................................................... 4

6. Manual operation ..................................................................................................................................................... 5

7. Electric supply ........................................................................................................................................................... 5

7.1 Wiring diagram ...................................................................................................................................................... 6

7.2 Thermal switch as potential free contact ............................................................................................................. 7

8. Valve mounting ......................................................................................................................................................... 7

9. Setting the mechanical stop ...................................................................................................................................... 8

10. Adjustment of limit switches .................................................................................................................................... 8

11. Commissioning .......................................................................................................................................................... 9

PSR-E-C actuators are built to state-of-the-art technology and are safe to operate. Despite this, the actuators may be

hazardous if operated by personnel that has not been sufficiently trained or at least instructed, and if the actuators

are handled improperly, or not used as per specification.

This may

well as the owner´s instructions for work, operation and safety.

installation, commissioning, operation, change of operating conditions and modes, maintenance, inspection,

repair and installation of accessories.

connection.

operational characteristics that may affect safety, must be reported at once.

held liable for any damage resulting from it.

Otherwise the manufacturer cannot be held liable for any resulting damage.

down by the manufacturer.

Special precautions have to be taken while doing this!

about potential hazards. The specific regulations for the prevention of accidents have to be observed.

Proper storage means:

The electric quarter-turn actuators series PSR-E-C are designed to operate valves with 90° angular motion. The

PSR-E-C actuators are provided with a mechanical interface according to ISO 5211 for valve mounting. The motor

spring for manual operation. A sticker on the actuator cover indicates the relevant mode for manual operation. At

motor operation, the handwheel serves as running indicator.

Electrical wiring is done to a terminal block under the actuator cover.

Standard actuators may be operated at ambient temperatures from -20°C to +80°C

Ambient temperature range for modulating service is -20°C to +60°C.

Operating modes correspond to IEC 60034-1, 8: S2 for short cycle and S4 for control service (see data sheet for

specific values for each actuator size).

For protection against moisture and dust, enclosure rating is IP65 according to EN 60529. To ensure this enclosure,

the cover must be fitted correctly and the screws tightened cross wise after opening. The handwheel must be fitted

Outdoor usage:

When using actuators in environments with high

temperature fluctuations or high humidity, we

Figure 2: installation position

Do not exceed the adjusted electrical stroke limits. by

handwheel.

The mechanical limits must be set accordingly.

feedback setting!

Figure 3: Manual operation

Two adjustable limit switches are installed to limit the stroke of the actuator, and cut-off the motor current in the

relative direction.

stop the motor. Re-starting the motor is allowed only after the thermo switch has reset. Failure to

observe this warning may result in damage to the actuator.

There is one adjustable screw available for setting the mechanical limit of the 90° angular stroke.

Pos. ①: Stop screw

Pos. ②: Protection cap

Figure 7: Mechanical stop

Figure 8: Setting the switching cams for stroke limit switches

The standard limit switches serve to switch-off the motor when the end positions are reached.

Additional limit switches are free of voltage and serve to indicate the valve position. These are available as optional

auxiliaries. The switches are activated by cams. These cams are stepless adjustable on their shaft by means of a

friction coupling.

Ensure that the mains supply is secured against accidental switching-on!

until the micro switch is heard to click.

direction either. If necessary, reverse the setting signal for OPEN/CLOSE.

switch positions are correct. If necessary re-adjust the limit switches.

The actuators are maintenance-free if used under the operating conditions as stated in the data sheet. The

gearboxes are lubricated for lifetime and do not require further lubrication.

The actuators should be cleaned dryly.

Defective actuators should be returned to our works in Bad Dürkheim, Germany, or to our representatives, for

evaluation of failures and repair.

Please refer to the actuator data sheets for technical data.

Various auxiliaries are available in order to adapt the actuators to the various service conditions. A list of auxiliaries

for each actuator type is shown on the actuator data sheet.