Burkert 2100 Instructions page 3

Installing the actuator on the valve body:
→
Check the graphite seal and if required, replace it.
WARNING!
Danger if incorrect lubricants used!
Unsuitable lubricant may contaminate the medium. In oxygen appli-
cations there is a risk of an explosion!
• In specific applications, e.g. oxygen or analysis applications, use
appropriately authorised lubricants only.
→
Grease nipple thread before re-installing the actuator (e.g. with
Klüber paste UH1 96-402 from Klüber).
NOTE!
Damage to the seat seal or the seat contour!
• When installing the actuator, ensure that the valve is in open
position.
→
Control function A pressurize the pilot air port 1 with compressed
air (5 bar): valve opens.
→
Screw actuator into the valve body.
Observe tightening torque (see "Tab. 2").
CHANGING THE SEAL SET
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.
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.
The seal set for the packing gland contains:
Item Description
1 1 Support ring
2 7 Chevron seals
3 2 Pressure rings
4 1 Pressure spring
2
Air discharge connection
CFA, CFB
Pilot air port
CFI
1
Pilot air port
CFA, CFB, CFI
Flats for open-end
wrench
Removing the swivel plate:
→
Knock out the pin with a suitable pin punch.
Pin punch ø 3 mm, for spindle diameter 10 mm on the swivel
plate (see "Tab. 1").
Pin punch ø 5 mm, for spindle diameter 14 mm on the swivel
plate (see "Tab. 1").
→
Remove swivel plate.
Tightening torque
Tab. 2:
Item Description
5 1 Spindle guide
6 Graphite seal
7 Lubricant
Actuator
Nipple
Valve body
→
→
Air discharge connection 2
CFA, CFB
Pilot air port
CFI
1
Pilot air port
CFA, CFB, CFI
Orifice
(mm)
15
20
25
32
40
50
65
Tightening torque of valve body / nipples
The packing gland cannot be replaced for the device
combination ø 70 / orifice 50.
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 compressed
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.
Graphite seal
Unscrew the spindle guide with the aid of the installation
wrench and an open-end wrench (series production status up to
2)
January 2013).
Unscrew the spindle guide with the aid of a modified socket
wrench (series production status since January 2013).
2)
The installation wrench or modified socket wrench is available
2)
from your Bürkert sales office.
Type 2100
Tightening torque
[Nm]
45 ± 3
50 ± 3
60 ± 3
65 ± 3
70 ± 3
100 ±3
Spindle
Pin
Swivel plate