Burkert 2301 Manuel D'utilisation page 35

Maintenance, Cleaning
10.4.1. replacing the packing gland
The seal set for the packing gland contains (see "Fig. 25")
• 1 support ring
• 5 gaskets
• 2 or 3 pressure rings
11)
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
(see „Tab. 24: Installation wrench").
• Observe tightening torques.
Before the packing gland can be replaced, the actuator must be
removed from the valve body and the control cone removed.
depending on the spindle diameter
11)
Type 2301
• 1 pressure spring
• 1 spindle guide
removing 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:
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.
Exhaust air port
or pilot air port
Pilot air port
Flats for open-end
wrench
Valve body
Fig. 21: Valve
english
2
1
Actuator
Nipple
35