32 DEMETRAEN12 MAINTEINANCE12.1 INTRODUCTIONFor a long working life of the stove, have a periodic cleaning of the stove as described in the following paragrafs.• Fume outlet pipes (fume conduit + chimney flue + chimney pot) must always be cleaned, scrubbed andchecked by an authorized technician in compliance with local regulations, with the instructions of themanufacturer and those of your insurance company.• If there are no local regulations and no instruction from your insurance company, it is necessary to have yourfume pipe, chimney flue and chimney pot cleaned at least once a year.• It is also necessary to have the combustion chamber, motors and fans cleaned and to have the gaskets andthe electronical elements (if there are) checked at least once a year.All these operations must be planned in time with your Autorized Technical AssistanceService.• After a long ineffective time, before turning on the stove check if there are obstructions in the fume exhaust.• If the stove had been using continuously and intensely, the whole system (chimney included), must becleaned and checked more frequently.• In case of replacement of damaged pieces please ask for the original spare part at the Autorized Retailer.Before any movement let the fire inside the combustion chamber extinguish till the totalcooling and always disconnect the plug from the socket (if there are).12.2 BURNING POT AND ASH TRAY CLEANINGFor a good combustion, before of every stove ignition, remove the ash which has settled in the burning pot. Theabundant ash obstructes the primary air flow which is fundamental for a good combustion.• Remove ash from the burning pot by shaking it to let it fall in the ash tray.• If full, the sah tray must be empty.• Ash must be kept in a metal container with sealed cap, the same container must not ever be in contact withflammable materials (for example lent over a wooden floor), as ash inside keeps embers glowing for a longtime.• Only when the ash is completely extinguished can be throuwn in the organic waste.• Clean the ash also in the ash compartment.12.3 FUME PIPES ANNUAL CLEANINGClean once a week from soot with brushes.The cleaning operation must be executed by a specialized stove-repairer who will provide for the cleaning offume pipe, chimney flue and chimney pot. He will also check their eficiency and will release a written declarationof the safety of the appliance. This operation must be executed at least once a year.12.4 GENERAL CLEANINGFor cleaning external and inner parts of the stove do not use steel wools, muriatic acid or other corrosive andabrasive materials.