Unigas LX60, Manual Of Installation - Use - Maintenance

Page: 36 / 116

PART IV: MAINTENANCE
36
Replacing the spring in the gas valve group
Removing the combustion head
Type LX60
z
Remove cover C.
z
Unscrew the two screws S holding in position
the washer and then unscrew VRT to free the
threaded rod AR.
z
Unscrew the screws V holding in position the
manifold G and pull out the complete group as
shown in figure.
Note: for the subsequent assembly carry out the
above described operations in the reverse order,
checking the correct position of the OR ring.
Type LX65 / LX72
z
Remove the burner cover C.
z
Unscrew the screws V holding in position the
manifold G and pull out the complete group as
shown in figure.
Note: for the subsequent assembly carry out the
above described operations in the reverse order,
checking the correct position of the OR ring.
1
3
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 pro-
perly. 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.
SKP Siemens actuator
OR
V G
VRT
S
AR
C
OR
V G C
VRT
AR