Baxi CBP Matic 18 Manual page 233

In the event that fume extraction is not operating under the best conditions, the
extractor should be cleaned as illustrated in Figure 59 and Figure 60. In any case, it
is recommended that this procedure be carried out at least once a year.
c) b)
Figure 59 – Remove the screws securing the upper lid, both in the front and back of the boiler,
to access the extractor
Figure 60 – Remove the screws of the extractor and vacuum the air flow area
Note: you must annually to check the pre-charge of the expansion vessel, check security
valve and the liquid state of the hydraulic circuit.
WARNING! the frequency of maintenance tasks is dependent on the quality of
pellets
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