Burkert Type 2100 - Manual (Page 28)

28
Maintenance, cleaning
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.
• To replace the packing gland, use a special installation wrench
or a socket wrench.
• Observe tightening torques.
Before the packing gland can be replaced, the actuator must be
removed from the valve body and the swivel plate removed.
Remove the actuator from the valve body:
→
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 pressurize the pilot air port 1 with com-
pressed air (5 bar): valve opens.
→
Using a suitable open-end wrench, place the wrench flat on the
tube.
→
Unscrew the actuator from the valve body.
Actuator
Nipple
Valve body
Flats for open-end
wrench
Pilot air port
CFA, CFB, CFI
Air discharge connection
CFA, CFB
Pilot air port
CFI
2
1
Fig. 22: Designation parts
english
Type 2100