Sime SOLO 20 OF Manual Del Usuario página 81

2
4.7. 1 Cleaning smoke ducts
Use an adequate swab for cleaning
the smoke ducts of the boiler. After
cleaning, position the circulators in
their original position (fig. 16).
4.7.2 Cleaning combustion head
The combustion head is cleaned in the
following manner (fig. 17):
– Disconnect the high tension cables
from the electrodes.
– Unscrew the fixture screws of the
circulator support and remove it.
– Brush the propeller delicately (tur-
bulence disc).
– Carefully clean the photo-resistance
of eventual deposits of dirt deposit-
ed on its surface.
– Clean the remaining components of
the combustion head of eventual
deposits.
– Upon completion re-assemble the
unit in t he opposit e way as
described above taking care to
respect the indicated measure-
ments.
4.7.3 Substitution of nozzle
The nozzle should be substituted at
the beginning of every heating system
for guaranteeing the correct fuel flow
and a good spray efficiency.
The nozzle is substituted in the follow-
ing manner:
– Disconnect the high tension cables
from the electrodes.
– Loosen the fixture screw (A fig. 17)
of t he electr odes suppor t and
remove it.
– Block the spray door using a n°19
1
3
KEY
1 Heater stat
2 Cap
3 Heater
RONDO' 3/4 OF
ESTELLE 3/4 OF
RONDO' 5/6 OF
ESTELLE 5/6 OF
A
2 - 2,5 mm
Fig. 15/b
Fig. 16
Fig. 17
79