9.5
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.
▶ Observe tightening torques.
1
→
Mount valve
CAUTION!
Danger through taut springs!
▶ Carefully open piston actuator!
→
Release cover
12
against the hexagon.
For information about the special wrench, see Chapter "10 Installation tools".
→
Remove and / or insert pressure springs
→
For actuator size C, D, E and F: Remove pressure springs and insert new, weaker springs.
→
For actuator size G, H: Remove outer spring only
31
→
Mount cover
→
Check the valve for function and leaks.
Note changed direction of flow and changed pressure range!
28
Item
28, 29
on the body.
31
with special wrench until the springs are completely relaxed, holding up the actuator body
28 29
and screw tightly with special wrench.
english
Description
2 Pressure springs for actuator C, D, E, F
depending on actuator.
29
28
inner spring
remains in the actuator.
Type 2000, 2002, 2012
Conversionofcontrolfunction