Burkert Type 8691 - Manual (Page 22)

22
Installation
3. install pneumatic connection between control head and actuator
Pilot air outlet 2
1
Pilot air outlet 2
2
Upper pilot air port
Lower pilot air port
Example
∅ 80, CFA
Figure 13: Installation of the pneumatic connection, 20xx series
→
Screw the plug-in hose connectors onto the control head and the actuator.
→
Using the hoses supplied in the accessory kit, make the pneumatic connection between the control head and
actuator with the following “Table 1” or “Table 2”.
noTe!
Damage or malfunction due to ingress of dirt and moisture.
▶ To comply with degree of protection IP65 / IP67, connect the pilot air outlet which is not required (on CFA
and CFB) to the free pilot air port of the actuator or seal with a plug.
Control function a (CFa)
Process valve closed in rest position (by spring force)
Control head
Pilot air outlet
2
2
2
1
or
2
2
2
1
Actuator
Upper pilot air port
Lower pilot air port
Control function B (CFB)
Process valve open in rest position (by spring force)
Control head
Pilot air outlet
2
2
2
1
or
2
2
2
1
Actuator
Upper pilot air port
Lower pilot air port
Table 1: Pneumatic connection to actuator CFA and CFB
english
Type 8691