System Filling; Regular Cleaning - Sime 2R HE ErP Serie Handbuch

the presence of voltage.The burner
will start.
3.2.2 Boiler stat (fig. 8)
Turn the boiler stat knob to a tempera-
ture no lower than 60°C.
The set temperature value can be
checked on the thermometer.
3.2.3 Safety stat (fig. 9)
The manually reset safety stat trips to
switch-off the burners immediately when
the boiler temperature exceeds 100°C.
To restart the boiler, unscrew the black
cover and press the button underneath.
If the problem occurs frequently, call an
authorised technical assistance centre
for the necessary checks to be carried
out.
3.2.4 System filling
Periodically check the pressure values
of the hydrometer mounted onto the
system, when the system is cold, should
range between 1 and 1.2 bar (98 and
117.6 kPa). If the pressure is less than 1
bar (98 kPa), reset the system.
3.2.5 Turnig OFF boiler (fig. 7)
To temporarily turn off the boiler turn
off the electricity supply by pressing the
main switch. The following operations
must be carried out if the plant will not
be in use for a lengthy period of time:
– position the main switch of the plant on off;
– turn the fuel and water taps of the cen-
tral heating plant off;
– empty the central heating plant if there
is danger of frost:
3.3 REGULAR CLEANING
Maintenance of the boiler should be
carried out annually by an authorised
service engineer. Disconnect the boiler
from the electrical supply before ser-
vicing or maintenance is carried out.
3.3.1 Smoke side boiler (fig. 10)
To carry out cleaning of the smoke pas-
sages remove the screws that fix the
door to the body of the boiler and with the
special cleaning brush clean the internal
surfaces and the smoke evacuation tube
well, removing any deposits.
Once the maintenance is compled, the
baffles have to be fitted onto the original
positions.
The maintenance operations can be car-
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ried out without removing the burner.
3.3.2 Fault finding
Herefater we outline a number of poten-
tial problems that may occur on the
appliance and the relevant list of actions
required. A working fault, in most cases,
provocates the "lock out" signal onto the
control panel of the control box.
When this light turns on, the burner can
operate again only after the reset button
has been pressed; if this has been done
and a regular ignition occurs, it means
the failure can be defined momentary
and not dangerous. On the contrary,
if the "lock out" stays, the cause of
the fault, as well as the relevant action
must be made according to the follow-
ing chart:
60ϒ C
60ϒ C
The burner does not ignite
– Check the electric connections.
– Check the regular fuel flow, the clean-
ness of the filters, of the nozzle and air
vent from the tube.
– Check the regular spark ignition and
the proper function of the burner.
The burner ignites regularly but the
flame goes out immediately
– Check the flame detection, the air
calibration and the function of the
appliance.
Difficulty in regulating the burner and/
or lack of yield
– Check: the regular flow of fuel, the
cleanness of the boiler, the non
obstruction of the smoke duct, the
real input supplied by the burner and
its cleanness (dust).
Fig. 8
Fig. 9
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