70
926.427.1 - GB
30. ANNUAL MAINTENANCE
To optimise boiler efciency, carry out the following annual controls:
• checktheappearanceandairtightnessofthegasketsofthegasandcombustioncircuits;
• checkthestateandcorrectpositionoftheignitionandame-sensingelectrodes;
• checkthestateoftheburnerandmakesureitisrmlyxed;
• checkforanyimpuritiesinsidethecombustionchamber.
Use a vacuum cleaner to do this;
• checkthegasvalveiscorrectlycalibrated;
• checkthepressureoftheheatingsystem;
• checkthepressureoftheexpansionvessel;
• checkthefanworkscorrectly;
• makesuretheueandairductsareunobstructed;
• checkforanyimpuritiesinsidethesiphonttedoncertainboilers;
• checkthemagnesiumanode,wherepresent,forboilersttedwithstorageboilers.
WARNINGS
Before commencing any maintenance operations, make sure the boiler is disconnected from the power supply.
Afterwards, move the knobs and/or operating parameters of the boiler to their original positions.