Burkert 8697, Operating Instructions Manual

Page: 17 / 33

17
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. 1: Pneumatic connection to actuator”.
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 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 8697 are isolated or not actuated.
If the ambient air is humid, a hose can be connected
between pilot air outlet 2
2
of the Pneumatic Control Unit
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 Pneumatic Control Unit.
Control function Pneumatic connection Type 8697
with actuator
Pilot air outlet
Type 8697
Pilot air port
actuator
A
Process valve
closed in rest
position
(by spring force)
2
1
lower pilot air port
of the actuator
2
2
should be con-
nected to the
upper pilot
air port of the
actuator
B
Process valve open
in rest position
(by spring force)
2
1
upper pilot
air port of the
actuator
2
2
should be con-
nected to the
lower pilot air port
of the actuator
Tab. 1: Pneumatic connection to actuator
english
Type 8697