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A quick clean of the product can be performed by opening the front door only, removing the agitators and brushing the pipes with
the brush provided.
This operation should be repeated at least once a month during periods of activity of the generator and is intended to avoid
combustion residues from blocking the agitators so that these cannot be easily removed.
For a more thorough clean, remove the flue chamber to expel carbon residues from the back.
During any ordinary maintenance operation, the brush must always be used to clean the pipes (after having removed the agitators)
and the furnace, and also to collect the combustion residues through the doors located on the flue chamber.
Do not use flammable products, such as petrol, solvents or others, to clean the heat exchanger.
Check on the proper functioning of the control and measuring instruments of the generator (thermostats, thermometers) and of the
system (hydrometers, flow meters, pressure switches, expansion vessels, power units, safety devices).
It is good practice to analyse the water in the system and ensure that it is adequately treated to avoid the formation of lime
incrustations which initially reduce the output of the boiler and can cause its breakdown over time.
It must be remembered that calcium and magnesium salts dissolved in water with frequent topping up, lead to deposits in the boiler
which prevent circulation within the generator and cause overheating of the metal plates. This may cause serious damage which
cannot be attributed to the structural geometry of the product and/or materials used and/or technical design, and therefore, is not
covered by the guarantee.
It is also necessary to check the condition of the refractory insulation and the flue sealing gaskets and replace them if necessary.
7.2.
End-season maintenance or maintenance before long periods of inactivity
In addition to the operations described above, the following has to be performed:
• Check the wear of the agitators to ensure their timely replacement.
• After cleaning the flue ducts, clean the inside of the pipes and furnace with a cloth soaked in a diluted solution of caustic soda.
• Once dry, rub all the surfaces with an oil-soaked cloth.
• Seal well the air intake opening of the burner and the connection to the chimney in order to prevent the flow of moist air through
the boiler.
• It is advisable to place some quicklime in a container inside the furnace to absorb any moisture.
• Do not empty the system or the boiler.
• Protect the screws, nuts and pins of the door with graphite grease.
• Take note of all the operations which need to be done at the next start-up; in particular, check the operation of the recirculation
pump.
7.3.
Burner maintenance
During each maintenance operation on the boiler, it is necessary to check the burner functioning and adjustment according to the
operating, installation and maintenance manual of the burner.
This operation must be performed by qualified professional personnel.
7.4.
Checking the boiler performance
Check the following to ensure that the boiler operates safely:
• The regulation thermostat.
• The safety thermostat.
• The minimum thermostat (its regulation and proper functioning).
• The recirculation system.
• The thermoregulator (if present).
• All other safety and control devices required by local regulations.
If the boiler is stared-up for the first time, check:
• The system manual.
• The suitability of the room where the boiler is installed.
• Air vents in the room.
• Flue gas pipes, their diameters and length.
• The correct installation of the boiler in accordance with the instructions contained in the present manual.
Should the boiler not operate correctly and in the absence of danger to persons, animals or property, notify the system supervisor
and complete a declaration describing this fact.
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