Burkert Type 8691 - Manual (Page 30)

30
Electricalinstallation24VDC
Procedure:
Body casing
Connection housing
Actuator
Transparent cap
Figure 21: Open control head
noTe!
Breakage of the pneumatic connection pieces due to rotational impact.
▶ When unscrewing and screwing in the transparent cap, do not hold the actuator of the process valve but the
connection housing.
→
Open the control head: turning the transparent cap anti-clockwise.
→
The key in recess for actuating the teach function keep pressed for approximately 5 seconds.
→
Only for control heads without pilot valve:
When yellow pilot valve LED is lit, move actuator to upper end position.
When yellow pilot valve LED goes out again, move actuator to lower end position.
noTe!
Damage or malfunction due to penetration of dirt and humidity.
To ensure degree of protection IP65 / IP67:
▶ Screw the transparent cap in all the way.
→
Close the device (assembly tool: 674077 5) ).
Key in recess for actuating the teach function (keep
pressed for approximately 5 seconds)
Chronological description of the teach function:
• the bottom end position is read in internally
• the pilot valve switches
• the actuator moves automatically to the top end position
• the top end position is read in internally
• the pilot valve is turned off
• the actuator moves back to the bottom end position
Status LED: flashes yellow when teach function is running
Pilot valve LED (yellow)
Figure 22: Teach function
5)
The assembly tool (674077) is available from your Bürkert sales office.
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Type 8691