Igema TG32, Assembly And Operating Manual, Page: 20 / 28

20
7.8 Maintenance work on shutoff valve
Do not carry out maintenance tasks and dismantling unless the boiler and
level gauge are empty and depressurised.
Always keep shutoff valve spindle thread greased.
Replacing the packing set on the shutoff valve
The following items must be renewed
when changing the packing set: item: 1
soft iron gasket; item 5-6 packing set.
First of all release the handle (9) and pull
it off the spindle, then release and screw
out the cap nut (7). Then screw the upper
part of the valve with the valve spindle
out of the valve housing. Now the
packing set (5,6,7) can be pulled off. It is
important that the valve spindle is
cleaned and freed of deposits, also
ensure that it does not suffer any
damage. Assembly is described in the
next section Assembly.
Assembly of the shutoff valve after replacing the packing set
First of all insert a new soft iron gasket (1) into the housing. Then grease thread of valve
spindle (2) and screw it into the upper part of valve (3) as far as it will go. Then insert base
ring (4), gland packing (5) and gland (6).
Screw on cap nut (7) and tighten gradually.
- spindle must remain movable
–
Screw in complete valve upper part (3) into the valve housing and tighten with tightening
torque
Md max = 280 Nm . Place on handle (9) and fix. Finally close the shutoff valve.
As an example: A120-CS
Caution
Gefahr