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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 con-
tents of this manual and in compliance with the
DANGER
standards and regulations of current laws.
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
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.
Photoresistance
Clean the photoresistance.
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
Delivery pressure must correspond with the table on Tab. F at
page 18. Please check that the supply line and filters are clear.
The use of a pump vacuum gauge will assist in this. This measure
Maintenance
Before carrying out any maintenance, cleaning or checking oper-
ations:
disconnect the electricity supply from the burner
by means of the main switch of the system;
DANGER
isolate the fuel supply.
DANGER
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.
In case of use of gas oil and bio fuel blends, it is strongly
recommended to inspect even more frequently the hoses
and replace them where contamination has occurred.
Check to make sure that the hoses are still in good condi-
tion.
In case of use with gas oil containing up to 30%
Bio blend, it will be essential to use flexible oil
lines suitable for bio fuel use.
Please contact Riello for further information.
WARNING
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.
This is extremely important when gas oil containing Bio diesel is
in use. 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.
Combustion
In case the combustion values found at the beginning of the inter-
vention do not respect the standards in force or, in any case, do
not correspond to a proper combustion, contact the Technical
Assistant and have him carry out the necessary adjustments.
Allow the burner to work for 10 min. and then check the combus-
tion readings with the parameters indicated within the appliance
instruction manual. Then carry out a combustion check verify-
ing:
– Smoke temperature at the chimney;
– Content of CO
– Content of CO (ppm);
– Smoke value according to opacity smokes index according to
Bacharach scale.
21
GB
(%);
2
2902364
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