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8
Maintenance
8.1
Notes on safety for the maintenance
The periodic maintenance is essential for the good operation,
safety, 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.
8.2
Maintenance programme
8.2.1
Maintenance frequency
The combustion system should be checked at least once a year
by a representative of the manufacturer or another specialised
technician.
8.2.2
Checking and cleaning
Combustion
The optimum calibration of the burner requires an analysis of the
flue gases.
Significant differences with respect to the previous measure-
ments indicate 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 tem-
peratures.
Servomotor
Disengage the cam 2)(Fig. 29 at page 23) from the servomotor,
by pressing and moving button 3)(Fig. 31 at page 24) towards the
right, and turn it backwards and forwards by hand to make sure it
moves freely.
Now engage the cam again by moving the button 2)(Fig. 31 at
page 24) to the left.
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.
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.
Photocell
Clean the glass cover from any dust that may have accumulated.
Photocell 1)(Fig. 34) can be removed by pulling it outward force-
fully.
Maintenance
Before carrying out any maintenance, cleaning or checking oper-
ations:
Disconnect the electrical supply from the burner
by means of the main system switch.
DANGER
Close the fuel interception tap.
DANGER
D1232
Flame inspection window
Clean the glass (Fig. 35).
Burner
Check for excess wear or loose screws. Also make sure that the
screws securing the electrical leads in the burner connections are
fully tightened.
Clean the outside of the burner.
27
GB
D709
Fig. 34
Fig. 35
20033333
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