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3.3 Maintenance
The following operations are strictly reserved for Qualifi ed Personnel, such as corgi registered
engineers or Ferroli personnel.
Seasonal inspection of the boiler and fl ue
It is advisable to carry out the following checks at least once a year:
• The control and safety devices (gas valve, thermostats, etc.) must function correctly.
• The fl ue terminal end piece and ducts must be free of obstructions and leaks.
• The gas and water systems must be sound.
• The burner and exchanger must be clean.
• The electrodes must be free of scale and correctly positioned.
• The system vented to ensure no air present.
• The expansion vessel must be fi lled to 1 bar cold with zero system pressure.
• The gas fl ow and pressure must correspond to that given in the respective tables.
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Optimax 25 OV
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