Burkert Type 2012 - Manual (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 Description
28, 29 2 Pressure springs for actuator C (40 mm),
D (50 mm), E (63 mm), F (80 mm)
Procedure:
→
Mount valve 1 on the body.
CAutIon!
Danger through taut springs!
• Carefully open piston actuator!
→
Release cover 31 with special wrench until the springs are
completely relaxed, holding up the actuator body 12 against the
hexagon.
For information about the special wrench, see Chapter
“Installation tools”.
→
Remove and / or insert pressure springs 28 29 depending on
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
spring only
29 , inner spring 28 remains in the actuator.
→
Mount cover 31 and screw tightly with special wrench.
→
Check the valve for function and leaks.
Note changed direction of flow and changed pressure range!
English
InstallatIon tools
Installation wrench for actuator C (40 mm) and D (50 mm)
Actuator ø (mm) Order no.
C 40 639 175
D 50 639 175
Installation wrench for actuator E (63 mm)
Actuator ø (mm) Order no.
E 63 639 170
Installation wrench for actuator F (80 mm), G (100 mm) and
H (125 mm)
Actuator ø (mm) Order no.
F 80 639 171
G 100 639 172
H 125 639 173
English