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5
BOILER CLEANING
Boiler cleaning is very important to prevent: poor combustion, deposits of ash and unburnt products in the brazier,
reduced thermal efficiency.
The boiler must only operate with the ash and fire door always closed.
The door seals must be checked periodically to prevent air from entering and ensure combustion chamber low
pressure.
Routine cleaning is normally carried out by the customer following the instructions in the manual, whereas
extraordinary maintenance, at least once a year, must be performed by the authorised Service Centre.
- Cleaning operations for all parts must be carried out with the boiler unplugged and cold;
- Dispose of cleaning waste in accordance with the current local regulations;
- The boiler must not be operated without its cladding;
- Avoid the creation of smoke and unburnt products during lighting and/or normal operation.
Given below are the control and/or maintenance operations for correct boiler use and operation.
Parts / Period
Type of cleaning
Brazier
Ash compartment-box
Heating chamber tube bundle
Manifold – fume extractor
Ash-fire door seal
Pipe - flue connection
5.1 Cleaning the brazier - brazier holder
Remove the brazier and the ash deposited in the combustion chamber and brazier holder. A suitable vacuum
cleaner may be used for this purpose. This operation must be carried out daily, especially in case of accumulated
unburnt matter, to ensure perfect combustion conditions, since the brazier holes allow the flow of combustion air.
Also make sure the secondary air holes in the side pipes of the brazier holder are free of any combustion residuals
and ash.
When necessary, clean the fire door glass for visually checking the flame inside the combustion chamber.
Brazier dirty
5.2 Cleaning the ash container
The ash container is located directly under the brazier - brazier holder. To clean it, open the ash door and remove
the ash and any combustion residuals using a suitable vacuum cleaner.
The door must be closed after cleaning. The ash container can be cleaned every 2-3 days depending on boiler use.
5.3 Cleaning the fume extractor and combustion chamber
The combustion chamber must be cleaned at least once a year, removing all combustion residuals from the internal
fume pipes and flueways. To carry out this operation, it is necessary to remove the boiler top cover, the heating
chamber cover and the bottom inspection door, undoing the respective fixing screws, then clean the turbulators and
internal fume pipes.
Also, make sure to clean the fume extractor located at the back of the bottom fume manifold accessed through the
inspection door opening behind the ash box.
Every 3-4 months clean the inside walls of the combustion chamber and top fume manifold using suitable
equipment (brushes) and replace the vermiculite walls if necessary.
Every 1800 hours of operation by means of a message 'SERVICE DUE', the boiler signals the need for
extraordinary maintenance (not under warranty) to be performed by qualified personnel who will carry out complete
cleaning and reset the message.
Any knocking or forcing can damage the fume extractor, making it noisy during
operation; therefore it is advisable to have this operation carried out by qualified personnel.
1 day
routine
cleaning
■
Brazier clean
Brazier holder clean
2-3 days
1 month
routine
routine
cleaning
cleaning
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62
1 year
2 - 3 months
extraordinary cleaning:
routine
carried out by the Service
cleaning
Centre
■
The brazier must rest on the
brazier holder and precisely on
the entire ring band without air
gaps.
DOMUSFIRE C17-C24 HR
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