C.I.B. UNIGAS
- M039231CB
33
Replacing the spring in the gas valve group
To replace the spring in the gas valve group,proceed as follows:
1
Carefully twist the protection cap 1 and the O-ring 2.
2
remove the “set value” spring 3 from housing 4.
3
Replace spring 3.
4
Carefully insert the new “set value” spring. Pay attention to mount properly. First insert the spring part with smaller diameter in the
housing.
5
Place O-ring 2 in protective cap 1. Screw in the protective cap with the O-ring in it.
6
Stick the adhesive label for spring identification on the type plate.
Removing the combustion head
1
Remove the cover
C
.
2
remove the electrodes cables;
3
unscrew the 3 screws
V
which hold in position the gas manifold
G
and pull out the complete group as shown in figure.
Note:
to replace the combustion head reverse the procedure described above having care to place correctly the O ring (
OR
) between
burner and gas manifold.
DUNGS MBC..SE
SKP Siemens actuator
Fig. 18
Keys
VRT
Head adjusting screw
AR
Threaded rod
V
Fixing screw
G
Gas manifold
OR
“O” ring
C
Cover
Fig. 19
3
1
2
4
4
1
1
3
V
C
G
AR
OR
VRT
