Burkert 8690 Manuel D'utilisation page 20

noTE!
too high torque when screwing in the fastening screw does
not ensure protection class ip65 / ip67!
• The fastening screws may be tightened to a maximum torque of
0.5 Nm only.
→
Attach the Pneumatic Control Unit to the actuator using the two
side fastening screws. In doing so, tighten the fastening screws
hand-tight only (max. torque: 0.5 Nm).
3. installation of the pneumatic connection on the actuator
Pilot air outlet 2
Pilot air outlet 2
Upper pilot air port
Lower pilot air port
Fig. 13: Installation of the pneumatic connection, 20xx series
20
1
2
english
Type 8690 Ex
Installation
→
Screw the plug-in hose connectors onto the Pneumatic Control
Unit and the actuator.
→
Using the hoses supplied in the accessory kit, make the con-
nection between the Pneumatic Control Unit and the actuator
with the following "Tab. 6: Pneumatic connection to actuator".
noTE!
damage or malfunction due to ingress of dirt and moisture!
• To comply with protection class IP65 / IP67, connect the pilot
air outlet which is not required to the free pilot air port of the
actuator or seal with a plug.
"In rest position" means that the pilot valves of the Pneu-
matic Control Unit Type 8690 are isolated or not actuated.
If the ambient air is humid, a hose can be connected between
pilot air outlet 2 of the Pneumatic Control Unit and the
2
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
Pneumatic Control Unit.