Burkert Type 2301 - Manual (Page 30)

30
Maintenance, cleaning
10.3 replacing the wearing parts
10.3.1 replacing the control cone set
The control cone set consists of
• Control cone
• Graphite seal • Dowel pin
• Lubricant
Before the control cone set can be replaced, the actuator must be
removed from the valve body.
Danger!
risk of injury from discharge of medium and pressure!
It is dangerous to remove a device which is under pressure due to
the sudden release of pressure or discharge of medium.
▶ Before removing a device, switch off the pressure and vent the
lines.
Warning!
risk of injury if the wrong tools are used!
It is dangerous to use unsuitable tools for installation work as the
device may be damaged.
▶ To remove the actuator from the valve body, use an open-end
wrench, never a pipe wrench.
removing the actuator from the valve body
Actuator
Nipple
Valve body
Flats for open-end
wrench
Pilot air port
Exhaust air port
Pilot air port
2
1
Fig. 17: Valve
→
Clamp the valve body in a holding device
(applies only to valves which have not yet been installed).
note!
damage to the seat seal or the seat contour!
▶ When removing the actuator, ensure that the valve is in open
position.
→
control function a:
Without unit control: pressurize the pilot air port 1 with com-
pressed air (5 bar): valve opens.
With unit control: open the valve according to the operating
instructions for the control unit.
→
Using a suitable open-end wrench, place the wrench flat on the pipe.
→
Unscrew the actuator from the valve body.
english
Type 2301