Bürkert 2702 Gebruiksaanwijzing - Pagina 3
Blader online of download pdf Gebruiksaanwijzing voor {categorie_naam} Bürkert 2702. Bürkert 2702 12 pagina's. 2/2-way angle-seat control valve
Pagina afdrukkenCHANGING THE SEAL SET
Before the seal set can be replaced, the actuator must be
removed from the valve body and the control cone must be
removed.
→
Remove the actuator (see "Removing the actuator" on page 3)
→
Remove the control cone (see "Removing control cone" on page
4).
Replacing packing gland:
PEEK spindle guide (series production status up to April 2012)
→
Unscrew the spindle guide with the aid of the installation wrench
and an open-end wrench.
VA spindle guide SP10 / SP14
(Series production status since April 2012)
→
Unscrew spindle guide using a modified socket wrench
open-end wrench.
VA spindle guide SP22
→
Unscrew the VA spindle guide with the aid of 2 open-end wrenches.
The installation wrench or modified socket wrench is
2)
available from your Bürkert sales office
(see chapter "Installation tools" on page 9).
VA spindle guide
SP22
WARNING!
Risk of injury from parts jumping out!
When the spindle opening is exposed, the individual parts of the
packing gland are pressed out at an undefined speed when the
pilot air ports is pressurized.
▶ Before pressurizing with control air, safeguard the ambient area
of the discharge opening (e.g. place spindle on a firm base).
6
→
Screw spindle guide back in using the installation tool. Observe
torque (see "Tab. 2: Tightening torques of spindle" on page 7).
→
Install control cone (see "Installing control cone" on page 4).
→
Install the actuator (see "Installing the actuator" on page 8).
Type 2300: Seal set for packing gland SP10 / SP14
Support ring
Upper chevron seals
Upper pressure ring(s)
Pressure spring
Lower pressure ring
Lower chevron seals
Spindle ø 10 mm
2)
and an
2)
Packing gland tube
Packing gland
Spacer
Spindle
VA Spindle guide
Spindle ø 14 mm
Spindle guide
SP10 / SP14
Series production
status up to
April 2012
Spindle guide
SP10 / SP14
Series production
status since
April 2012
*) If the valve features a PEEK spindle guide, we recommend replacing it with a
VA spindle guide. They are available from your Bürkert sales office.
→
Press out packing gland. To do this, pressurize the control air con-
nection indicated in the following table with 6 - 8 bar:
Type
Control function
A + I
2300
B
2702
A + B
WARNING!
Danger if incorrect lubricants used!
The supplied lubricant is not suitable for oxygen and analysis
applications.
▶ Use only the lubricants authorized for the appropriate application.
→
Grease the individual parts of the new packing gland with
lubricant. The supplied lubricant can be used, provided it is
suitable for the appropriate application.
→
Connect the individual parts to the spindle in the specified
direction and sequence.
→
Push packing gland into the packing gland tube.
→
Grease thread of the spindle guide with Klüber paste UH1
96-402 or another suitable lubricant.
Type 2300: Seal set for packing gland SP22
Spindle ø 22 mm
Type 2702: Seal set for packing gland SP14
Type 2300
Packing gland tube
Packing gland
PEEK
spindle guide*
Spindle
Installation tool
Packing gland tube
Packing gland
VA Spindle guide
Spindle
Hexagon
Pilot air port
1
2
down
Support ring
Upper chevron seal
Upper pressure ring(s)
Pressure spring
Lower pressure ring
Lower chevron seals
Spacer
Upper chevron seal
Upper pressure rings
Pressure spring
Lower pressure ring
Lower chevron seals
5
7