Burkert Type 8693 - Manual (Page 54)

54
Installation
Control.function Pneumatic.connection.Type.8692,.8693.with.actuator
Pilot.air.outlet.
Type.8692,.8693
Pilot.air.port.actuator
A
Process valve closed in rest position
(by spring force)
2
1
lower chamber of the actuator
2
2
should be connected to the upper
chamber of the actuator
B
Process valve open in rest position (by
spring force)
2
1
upper chamber of the actuator
2
2
should be connected to the lower
chamber of the actuator
I
Process valve closed in rest position
2
1
lower chamber of the actuator
2
2
upper chamber of the actuator
Process valve open in rest position
2
1
upper chamber of the actuator
2
2
lower chamber of the actuator
Table 14: Pneumatic connection to actuator
"In rest position" means that the pilot valves of the positioner Type 8694 are isolated or not actuated.
If the ambient air is humid, a hose can be connected between control air connection 22 of the positioner
and the unconnected chamber 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 positioner.
15.4. rotating the actuator module
The actuator module cannot be rotated unless there are straight seat and slanted seat valves!
Following installation of the process valve, if the positioner display is only partially visible or the connection cables
or hoses cannot be fitted properly, the actuator module (positioner and actuator) can be rotated into a position
suitable for the connection.
Only the entire actuator module can be rotated. The positioner cannot be rotated contrary to the actuator.
The process valve must be in the open position for alignment of the actuator module!
danGer!
Danger.–.high.pressure.in.the.equipment!
There is a serious risk of injury when reaching into the equipment.
• Before loosening the lines and valves, turn off the pressure and vent the lines.
Procedure:
→
Clamp valve body in a holding device (only required if the process valve has not yet been installed).
english
Type 8692, 8693