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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
operations:
9.2 Maintenance programme
9.2.1 Maintenance frequency
9.2.2 Checking and cleaning
Pump
The delivery pressure must be stable at 20 bar.
The depression must be less than 0.45 bar.
Unusual noise must not be evident during pump operation.
If the pressure is unstable, or 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 measure
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 entering the piping.
Fan
Check to make sure that no dust has accumulated inside the fan
or on its impellers, as this condition will cause a reduction in the
air flow rate and provoke polluting combustion.
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 temperatures.
Burner
Make sure that the screws are well secured.
Nozzles
Avoid cleaning the nozzle openings.
It is advisable to replace nozzles once a year during periodical
maintenance. The replacement of the nozzle requires
combustion control.
Servomotor
Release the servomotor by turning the notch 2) (Fig. 29 on
page 25) by 90° and manually checking that the cam movement
is smooth.
Filters
Check the following filter boxes:
• on line 1) • in the pump 2) • in the nozzle 3), and clean or replace
as required.
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.
Fuel tank
Approximately every 5 years, or whenever necessary, suck any
water or other impurities present on the bottom of the tank using
a separate pump.
Boiler
Clean the boiler as indicated in its accompanying instructions in
order to maintain all the original combustion characteristics
intact, especially: the flue gas temperature and combustion
chamber pressure.
Flexible hoses
Check periodically the conditions of the flexible hoses.
Replace at least every 2 years.
Check to make sure that the hoses are still in good condition.
9 Maintenance
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
standards and regulations of current laws.
Disconnect the electrical supply from the burner
by means of the system main switch.
Close the fuel shut-off valve.
The gas combustion system should be checked at
least once a year by a representative of the
manufacturer or another specialised technician.
The operator must use the required equipment
during maintenance.
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