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6
Maintenance
6.1
Notes on safety for the maintenance
The periodic maintenance is essential for the good operation, safe-
ty, yield and duration of the burner.
It allows you to reduce consumption and polluting emissions and to
keep the product in a reliable state over time.
The maintenance interventions and the calibration
of the burner must only be carried out by qualified,
authorised personnel, in accordance with the con-
tents of this manual and in compliance with the
DANGER
standards and regulations of current laws.
6.2
Maintenance programme
6.2.1
Maintenance frequency
The gas combustion system should be checked at
least once a year by a representative of the manu-
facturer or another specialised technician.
6.2.2
Checking and cleaning
The operator must use the required equipment dur-
ing maintenance.
Combustion
An analysis of the flue gases at the boiler outlet is required . Signif-
icant differences with respect to the previous measurements indi-
cate the points where more care should be exercised during
maintenance.
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 temper-
atures.
Fan
Check to make sure that no dust has accumulated inside the fan or
on its blades, as this condition will cause a reduction in the air flow
rate and provoke polluting combustion.
Maintenance
Before carrying out any maintenance, cleaning or checking opera-
tions:
Disconnect the electrical supply from the burner by
means of the main system switch.
DANGER
Close the fuel interception tap.
DANGER
Wait for the components in contact with heat sourc-
es to cool down completely.
Flame inspection window
Clean the flame inspection window (Fig. 42).
Burner
Make sure that the screws securing the electrical leads in the burn-
er connections are fully tightened.
Clean the outside of the burner, taking special care with the linkag-
es joints and cam.
Nozzle
Do not clean the nozzle orifices.
Replace the nozzles every 2-3 years or whenever necessary. Com-
bustion must be checked after the nozzles have been changed.
31
GB
D709
Fig. 42
20109674
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