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9
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.
The maintenance interventions and the calibration
of the burner must only be carried out by qualified,
authorised personnel, in accordance with the
contents of this manual and in compliance with the
DANGER
standards and regulations of current laws.
Before carrying out any maintenance, cleaning or checking
operations:
9.2
Maintenance programme
9.2.1
Maintenance frequency
The combustion system should be checked at
least once a year by a representative of the
Manufacturer or another specialised technician.
9.2.2
Checking and cleaning
The operator must use the required equipment
during maintenance.
Combustion head
Open the burner and make sure that all components of the com-
bustion head are in good condition, not deformed by the high
temperatures, free of impurities from the surroundings and cor-
rectly positioned.
Clean the combustion head in the fuel exit area, on the diffuser
disc.
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.
Maintenance
Disconnect the electrical supply from the burner
by means of the main system switch.
DANGER
Close the fuel shut-off valve.
DANGER
Wait for the components in contact with heat
sources to cool down completely.
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
Delivery pressure must correspond with the table on Tab. E at
page 17. 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.
Hoses
Check periodically the flexible pipes conditions. They have
to be replaced at least every 2 years.
Check to make sure that the hoses are still in good condi-
tion.
Fuel tank
If water or contamination is present within the fuel tank, it is es-
sential that this is removed before the equipment is to be used. If
in doubt about how to achieve this then please contact the fuel or
oil tank supplier.
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.
21
GB
20163551
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