Burkert 2000 Mode D'emploi page 3

→
35
Insert pressure springs .
→
20
Place intermediate washer
spindle.
→
22
Insert pistons and supporting washer
→
2
Wet spindle thread with special adhesive LOCTITE 274 and
25
screw on nut .
→
26
Mount position indicator .
→
30
Insert new O-ring into the groove of the actuator body.
Do not damage sealing edges when replacing the seal!
→
5
Replace graphite seal .
→
Only for VA body: Lubricate nipple thread
UH1 96-402.
→
1
Clamp body .
note!
Damage to the seat contour!
• During installation, take care that there is no damage to the seat
contour.
• Observe tightening torques according to "Tab. 1".
conveRsIon fRom conTRol funcTIon
a (cfa) To conTRol funcTIon I (cfI)
Danger!
Danger – high pressure!
• Turn off the pressure and vent the lines before loosening lines or
valves.
Risk of injury from improper maintenance!
• Maintenance may be performed by authorized technicians only!
• To screw on or unscrew valve body or actuator, use an open-end
wrench, never a pipe wrench, and observe tightening torques.
Required parts:
Item
30
Procedure:
→
1
Mount valve on the body.
Caution!
Danger through taut springs!
• Carefully open piston actuator!
conveRsIon fRom flow above The seaT
To flow below The seaT
Danger!
Danger – high pressure!
• Turn off the pressure and vent the lines before loosening lines or
valves.
Risk of injury from improper maintenance!
• Maintenance may be performed by authorized technicians only!
• To screw on or unscrew valve body or actuator, use an open-end
wrench, never a pipe wrench, and observe tightening torques.
Required parts:
Item
28, 29
Procedure:
→
1
Mount valve on the body.
Caution!
Danger through taut springs!
• Carefully open piston actuator!
21
and lightly lubricated O-ring on
24
.
6
with Klüber paste
Description
1 O-ring
Description
1 or 2 Pressure springs
→
6
Screw in nipple with actuator in valve body
→
For actuator size G (100 mm) and H (125 mm): Insert washer
40
.
→
31
Mount cover and screw tightly with special wrench.
→
Check the valve for function and leaks.
Tightening torques
Material of nipple DN
thread
15
20
25
Brass or stainless
32
steel
40
50
65
Tab. 1: Valve body tightening torques
→
31
Release cover with special wrench until the springs are
completely relaxed, holding up the actuator body
hexagon.
For information about the special wrench, see Chapter
"Installation tools".
→
For actuator size G (100 mm) and H (125 mm): Remove
40
washer .
→
28 29
Remove pressure springs
→
30
Insert O-ring into the groove of the actuator body.
→
31
Mount cover and screw tightly with special wrench.
→
Check the valve for function and leaks.
For control function I (CFI) connect both control air connections
to the control lines.
→
31
Release cover with special wrench until the springs are
completely relaxed, holding up the actuator body
hexagon.
For information about the special wrench, see Chapter
"Installation tools".
→
Remove and / or insert pressure springs
actuator.
→
For actuator size C (40 mm), D (50 mm), E (63 mm) and
F (80 mm): Remove pressure springs and insert new, stronger
springs.
→
For actuator size G (100 mm) and H (125 mm): Install new
29
outer spring in addition to the existing inner spring
→
31
Mount cover and screw tightly with special wrench.
→
Check the valve for function and leaks.
Note changed direction of flow and changed pressure range!
1
.
Tightening torques
45
50
60
65
65
70
70
12
against the
.
12
against the
28 29
depending on
28
.