Boiler maintenance
Inspection and cleaning
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4.2.4
Annual inspection
Carry out annually, however at least after 2500 service hours!
For the annual inspection:
Switch off the main switch when the boiler has cooled down
Clean the heat-exchanger
Remove the insulated cover and open the cleaning cover
Remove all dirt and deposits for the flue gas chamber.
Clean the area below the step grate
Remove the blanking plate and the thermal insulation
Remove the inspection cover
Clean away the ash below the step grate with the furnace tool or an
ash vacuum
Clean the side passage to the flue gas recirculation (optional)