Burkert Type 8694 - Manual (Page 7)

7
Installation
4.2. Disassembly of Type 8630
Procedure:
1. Disconnecting pneumatic connection:
→
Remove supply pressure connection and exhaust air connection
(if installed).
→
Loosen pneumatic connection between positioner and actuator.
Supply pressure and
exhaust air connection
Pneumatic
connection
Electrical
connection
(multi-pole variant)
Fig. 1: Disconnecting supply
2. Disconnecting electrical supply connection:
Multi-pole variant:
→
Pull out the round plug.
Cable gland:
→
Loosen the four screws of the cover together with the cable
glands and remove cover.
→
Unscrew the screw terminals and pull out cables.
3. Removing the mechanical coupling between position measuring
system and switch cam:
→
Open the transparent hood of the positioner.
Driving fork
Switch cam
Hexagonal socket
head screw
Coupling element
position measuring
system
Fig. 2: Coupling position measuring system
The driving fork is clipped onto the coupling element and there are
two options to remove this coupling:
→
Loosen hexagonal socket head screw and remove switch cam.
The switch cam is secured with screw locking paint. As a
result, increased effort may be required to remove it.
or
→
Remove the driving fork from the coupling element of the
position measuring system by turning a screw driver counter-
clockwise (see "“Fig. 3: Removing the driving fork”").
english
Types 8692, 8693, 8694