RED TECNIKA 28 Use And Installation Manual page 52

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After cleaning the convective ducting of the boiler from ash deposits, it is advisable to carefully clean the
combustion gas fan turbine (or at least to check its conditions) of the boiler. CAUTION - Remove ash
deposits and tar residues from the combustion gas fan turbine using a soft brush (do not use a metal brush
or other rigid tool) passing through the combustion gas fan inlet opening.
Figure 8.1.9 View of combustion gas fan inlet opening.
EXPLANATION: you are keenly recommended to remove the combustion gas fan and clean it well before
putting it back onto the boiler, paying attention to seal and tightness. The boiler must be disconnected from
the electric power by unplugging the boiler from the socket before removing combustion gas ashes
(compulsory procedure).
Open the lower opening of the convective ducting after having brushed and removed the ash residues from
the thermal exchange surfaces. Ash particles are collected in this section of the boiler (see figure below).
Figure 8.1.10 View of the opening for removing ash from the lower part of the convective ducting of the
boiler.
At the end of the ash cleaning procedure, the elements (turbolators, combustion gas conductive lids) must
be refitted and tightened again.
Cleaning and maintenance
TECNIKA 28-35
USE AND INSTALLATION MANUAL
Combustion gas
fan turbine
Technical dept. - All rights reserved - Reproduction prohibited
Chapter
8
page 52