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Maintenance
Filters (Fig. 35)
Check the following filter boxes:
• on line 1) • in pump 2) • at nozzle 3), and clean or replace as
required.
If rust or other impurities are observed inside the pump, use a
separate pump to suck out any water and other impurities that
may have deposited on the bottom of the tank.
Combustion head
Check to make sure that all the parts of the combustion head are
in good condition, positioned correctly, free of all impurities, and
that no deformation has been caused by operation at high tem-
peratures.
Nozzle
It is advisable to replace nozzles once a year during periodical
maintenance.
Do not clean the nozzle openings.
Flame sensor
Clean the glass cover from any dust that may have accumulated.
The sensor 1) can be removed by pulling it outward forcefully.
Flame inspection window
Clean the glass.
Flexible hoses
Check to make sure that the flexible hoses are still in good con-
dition.
Fuel tank
Every 5 years, or whenever necessary, suck out any water or oth-
er impurities present on the bottom of the tank using a separate
pump.
Burner
Make sure that the screws are fully tightened.
Flame presence check
Check the level of the flame detection signal with the “Check
mode” function from the flame control: the LEDs from 2 to 6
indicate the flame signal level, respectively. See See “LED
indicator and special function” on page 32..
Check Mode
With burner flame on:
hold the reset button on the flame control pressed for at
least 3 sec.;
the button colour will change from green to yellow;
each operating status signalling LED will be compared to
20% of the maximum brightness;
press the reset button again (<0.5sec) to reset the standard
operation of the signalling LEDs.Boiler
Clean the boiler as indicated in its accompanying instructions in
order to maintain all the original combustion characteristics in-
tact, especially the flue gas temperature and combustion cham-
ber pressure.
Fuel pump and/or couplings replacement
Carry out in conformity with (Fig. 38).
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