7690785.01 (1-05/18)
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18. ANNUAL SERVICING
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following at the annual service:
• Check the appearance and airtightness of the gaskets of the gas and combustion circuits. Replace any worn seals with new
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• Check correct operation of the fumes pressure switch, where present. Blow into the positive connector of the pressure switch
without using electromechanical devices, until you hear the activation click.
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18.1 CLEANING THE CONDESATE TRAP
Unscrew the lower section of the water condense trap “
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• Fill the lower section with water until about 10 mm below the upper
edge.
• Fasten the lower section onto the condense trap again.
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18.2 CLEANING THE HEAT EXCHANGER FUMES SIDE
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Proceed as follows to clean the heat exchanger:
• Disconnect the boiler from the mains power supply.
• Close the gas inlet valve.
• Remove the front cover from the boiler.
• Lower the electrical box, ensuring it is protected against contact
with water.
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nuts M6 and the connector under the mixer.
• Protect the rear insulating panel (2) against water with a waterproof
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• Accurately suck up the residue inside the combustion chamber and
remove any scale, using a brush with plastic bristles available in
the cleaning kit.
• Sprinkle the surfaces to be cleaned (1) generously with the
appropriate liquid BX-HT Cleaner or similar using the appropriate
spray bottle and wait 10 minutes (other products may be used,
after consulting the authorised technical assistance service).
Brush without rinsing and apply BX-HT Cleaner again. Let 10 more
minutes pass, then brush again. If the result is not satisfactory,
repeat the operation.
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• To reassemble, proceed in the inverse order, tightening the 6 nuts
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Содержание LUNA DUO-TEC MP+ 1.115
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