Burkert 8681 - Page 161

161
Replacement of Components and Modules
WARNING!
Risk of injury from high pressure!
` Beforelooseninglinesandvalves,turno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osothat
destructionofthePCBandelectronic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minimiseoravoidthepossibilityof
damage caused by sudden electrostatic discharge!
•Also ensure that you do not touch electronic components when the operating voltage is on!
Deinstallation procedure:
→ Switchtheelectricalpowertothecontrolheado!
→ Loosen the control head from the process valve.
→ Open the housing following the instructions in chapter “8OpeningandClosingtheHousing”.
4.
Pull out position
measuring system
2.
Fold electronic
module to
the front
1.
Loosen Torx10
screw
3.
Bend/breakothesnap-t
hooks inwards - 4x
(bottomview)
Fig. 54: Dismantling the position measuring system
→ Loosenthefasteningscrew(Torx10)oftheelectronicmodule(seechapter“24.2”).
english
Control Head Type 8681