Burkert 8681 Operating Instructions Manual page 94

DANGER!
Risk of injury from high pressure!
• Before loosening lines and valves, turn off the pressure and vent the lines.
NOTE!
Electrostatic sensitive components/modules!
• Before changing the position measuring system, switch the electrical power for the control head off so that
destruction of the PCB and electronics module is avoided.
• The device contains electronic components which react sensitively to electrostatic discharge (ESD). Contact
with electrostatically charged persons or objects may be hazardous to these components. In the worst case
scenario, they will be destroyed immediately or will fail after start-up.
• Observe the requirements in accordance with DIN EN 61340-5-1 to minimize or avoid the possibility of damage
caused by sudden electrostatic discharge!
• Also ensure that you do not touch electronic components when the supply voltage is on!
Deinstallation procedure:
→
Switch the electrical power to the control head off!
→
Loosen the control head from the process valve.
→
Open the housing following the instructions in Chapter "8. Opening and Closing the Housing".
Fig. 41: Dismantling the position measuring system
94

4.
Pull out position
measuring system
1.
Loosen Torx10
screw
2.
Fold electronics
module to
the front
English
Control Head Type 8681
ReplacementofComponentsandModules Replacement o f C omponents a nd M odules
3.
Bend/break off the snap-fit
hooks inwards - 4x
(bottom view)