44
Removing and cleaning the combustion head
1
By means of the plastic hook
G
, unlock the rod
T
(Fig. 54) which drives the butterfly valve (Fig. 54 and Fig. 55), to disconnect it
from its seat.
2
Remove the screws
V1
,
V2
,
V3
,
V4
and the screws
S1
and
S2
(Fig. 54).
3
Disconnect the ignition cable
CA
from the ignition transformer (Fig. 56).
4
Disconnect the connector
CR
(Fig. 57).
CAUTION: during the assembling phase, before tightening screws V1, V2, V3, V4, mount and tighten screws S1 and S2.
To remove the head, the operator must pull it towards himself. Once the combustione head is removed, check that the air and gas
holes are not obstructed (Fig. 57 -
H
). Clean the combustion head by a compressed air blow or, in case of scale, scrape it off by a
scratchbrush.
Fig. 54
Fig. 55
Fig. 56
Fig. 57
V1
V2
V3
V4
S1
S2
T
VT1
VT2
TR
G
LOCKED
UNLOCKED
G
G
CA
CR
H