Burkert Type 8681 User Manual
Page 30
30
Pneumatic Installation
Settings of the Flow-rate or the Control Speed with the Help of the Flow restriction Screws:
Open the housing observing the notes contained in chapter
→
8. Opening and Closing the Housing.
For proper setting, it is advisable to turn the two flow restriction screws initially into the minimum flow-rate
→
position. The process valve will then initially move slowly so that you have more time to find the optimum
setting during a switching operation.
Minimizing the flow-rate:
Turn clockwise
Maximizing the flow-rate:
Turn counterclockwise
Observing the safety guidelines, activate the valve location to be set (either using the system control or the
→
manual controls).
Turn the flow restriction screw, "P", counterclockwise to set the desired flow-rate and thus the opening time for
→
the process valve. (Tool: flat-blade screwdriver, width ≤ 3 mm). (Tool: flat-blade screwdriver, width ≤ 3 mm).
Activate valve location.
→
Turn the flow restriction screw, "R", counterclockwise to set the desired flow-rate and thus the closing time for
→
the process valve.
Flow restriction screw
Exhaust R
Flow restriction screw
Intake P
Fig. 9:
Flow restriction screws of the solenoid valves
note!
Makes sure that all manual controls have been deactivated (manual lever all the way left, as pictured) after the
•
setting work has been completed!
Close the housing observing the notes contained in chapter
→
8. Opening and Closing the Housing.
If no system status is available during setting, readjust the system under system operation conditions if
necessary.
Observe the safety guidelines during this!
Hand lever of the
mechanical manual
actuation facility
english
Control Head Type 8681