26
20045713
GB
Maintenance
9.1
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.
Before carrying out any maintenance, cleaning or checking oper-
ations:
9.2
Maintenance programme
9.2.1
Maintenance frequency
9.2.2
Checking and cleaning
Combustion head
Check that the positioning of the combustion head is correct and
that it is properly fixed to the boiler.
Open the burner and make sure that all components of the
combustion head are in good condition, not deformed by the
high temperatures, free of impurities from the surroundings
and correctly positioned.
Burner
Check for excess wear or loose screws and clean the outside of
the burner.
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.
Flame sensor
Clean the flame sensor.
Electrodes
Check the correct position of electrodes.
Nozzles
It is advisable to replace nozzles every year during regular main-
tenance operations.
Do not clean the nozzle openings; do not even open them.
Filters
Check the filtering baskets on line and at nozzle present in the
system. Clean or replace if necessary.
If rust or other impurities are observed inside the pump, use a
separate pump to lift any water and other impurities that may
have deposited on the bottom of the tank.
Pump
The delivery pressure must be stable. Unusual noise must not be
evident during pump operation.
If the pressure is found to be unstable or if the pump runs noisily,
the flexible hose must be detached from the line filter and the fuel
must be sucked from a tank located near the burner. This meas-
ure permits the cause of the anomaly to be traced to either the
suction piping or the pump.
If the pump is found to be responsible, check to make sure that
the filter is not dirty. The vacuometer is installed upstream from
the filter and consequently will not indicate whether the filter is
clogged or not. Contrarily, if the problem lies in the suction line,
check to make sure that the filter is clean and that air is not enter-
ing the piping.
Delivery pressure must correspond with the table on Tab. H on
page 22. please check that the supply line and filters are clear.
The use of a pump vacuum gauge will assist in this. This measure
permits the cause of the anomaly to be traced to either the suc-
tion line or the pump.
If the problem lies in the suction line, check to make sure that the
filter is clean and that air is not entering the piping.
9
Maintenance
DANGER
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
standards and regulations of current laws.
DANGER
disconnect the electricity supply from the burner
by means of the main switch of the system;
DANGER
close the fuel interception tap.
Wait for the components in contact with heat
sources to cool down completely.
The combustion system should be checked at
least once a year by a representative of the man-
ufacturer or another specialised technician.
The operator must use the required equipment
during maintenance.
Содержание 40 G10
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