Burkert 2301 Series, Operating Instructions Manual, Page: 31 / 48

31
Maintenance, cleaning
10.3 Replacing wearing parts
10.3.1 Replacing the control cone set
The control cone set consists of
• Control cone
• Seal
• Spring-type straight pin
•
Lubricant
To change the control cone set, first remove the actuator from
the valve body.
DANGER!
Risk of injury from discharge of pressure and escaping
medium.
Dismantling a device which is under pressure is hazardous due
to a sudden discharge of pressure or escaping medium.
▶
Before disassembly, shut off the pressure and vent all lines.
WARNING!
Risk of injury due to using wrong tool.
Performing installation work, using unsuitable tools, is haz -
ardous due to possible damage to the device.
▶
To remove the actuator from the valve body, use an open-
end wrench, never a pipe wrench.
Remove the actuator from the valve body
Actuator
Nipple
Valve body
Wrench flat
for open-end
wrench
Pilot air port
Pilot air port
2
1
Fig. 18: Valve
→
Clamp valve body in a collet (only for valves which have not
yet been installed).
NOTE!
Damage to the valve seat seal or seat contour.
▶
When removing the actuator, the valve must be in the open
position.
→ For control function A
Without control unit:
pressurise pilot air port 1 with com -
pressed air (5 bar). Valve opens.
With control unit: Open the valve in accordance with the
operating instructions of the control unit.
→
Place a suitable open-end wrench on the wrench flat of the
nipple.
→ Unscrew actuator from the valve body.
Type 2301
English