Burkert Type 2000 - Manual (Page 16)

16
Repairs
11.1.1. Removing the actuator from the valve
housing
DANGER!
Risk of injury from discharge of medium and release of
pressure!
It is dangerous to remove the device under pressure due to the
sudden release of pressure or discharge of medium.
• Turn off the pressure and vent the lines before loosening lines
or valves.
WARNING!
Risk of injury from damaged devices!
If the wrong tools are used for assembly work, the device may be
damaged.
• To remove the actuator from the valve housing, use an open-
end wrench, never a pipe wrench.
Control function A:
→
Pressurize control air connection with compressed air (5.5 bar)
so that the pendulum disc is lifted off the valve seat and is not
damaged.
Control function B:
For control function B it is not necessary to apply compressed air for
removal.
NOTE!
Damage to the seat seal or the seat contour!
• When removing the actuator, ensure that the valve is in the
open position.
→
When valve is in open position, remove actuator from the valve
housing using an open-end wrench (WAF 22) (see "Fig. 6").
Optical position indicator
Yellow = valve open
Actuator
Wrench flat for open-end wrench
(hexagonal)
Valve housing
Fig. 6: Removing the actuator
english
Type 2000 INOX