Burkert Type 8695 - Manual (Page 25)

25
Installation
Control function i (CFi)
Process valve closed in rest position
Control head
Pilot air outlet
2
2
2
1
Actuator
Upper pilot air port
Lower pilot air port
Process valve open in rest position
Control head
Pilot air outlet
2
2
2
1
Actuator
Upper pilot air port
Lower pilot air port
Table 2: Pneumatic connection to actuator CFI
If the ambient air is humid, a hose can be connected between pilot air outlet 2
2
of the control head and
the unconnected pilot air port of the actuator for control function A or control function B. As a result, the
spring chamber of the actuator is supplied with dry air from the vent duct of the control head.
7.4 rotating the actuator module
on process valves of series 2100, 2101, 2000 and
2012
The actuator module (control head and actuator) can be rotated for globe valves and angle-seat valves
belonging to series 2100, 2101, 2000 and 2012 only.
The process valve must be in the open position for alignment of the actuator module.
The position of the ports can be aligned steplessly by rotating the actuator module (control head and actuator)
through 360°.
Series 2100 and 2101:
Only the entire actuator module can be rotated. The control head cannot be rotated contrary to the actuator.
english
Type 8695