Burkert 2000 Mode D'emploi page 4

conveRsIon fRom flow below The seaT
To flow above 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 2 Pressure springs for actuator C (40 mm),
D (50 mm), E (63 mm), F (80 mm)
Procedure:
→
1
Mount valve on the body.
InsTallaTIon Tools
Installation wrench for actuator C (40 mm) and D (50 mm)
Actuator ø (mm)
C
D
Installation wrench for actuator E (63 mm)
Actuator ø (mm)
E
Description
Order no.
40 639 175
50 639 175
Order no.
63 639 170
Caution!
Danger through taut springs!
• Carefully open piston actuator!
→
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, weaker
springs.
→
For actuator size G (100 mm) and H (125 mm): Remove outer
29 28
spring only , 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!
Installation wrench for actuator F (80 mm), G (100 mm) and
H (125 mm)
Actuator ø (mm)
F 80
G 100
H 125
12
against the
28 29
depending on
remains in the actuator.
Order no.
639 171
639 172
639 173