11Causes of damageCaution!Risk of damage due to corrosion. Always switch on theappliance while cooking to avoid condensation. Condensatecan produce corrosion damage.Always replace faulty bulbs to prevent the remaining bulbs fromoverloading.Risk of damage due to ingress of humidity into the electroniccircuitry. Never clean operator controls with a wet cloth.Surface damage due to incorrect cleaning. Clean stainlesssteel surfaces in the direction of the grain only. Do not use anystainless steel cleaners for operator controls.Surface damage due to strong or abrasive cleaning agents.Never use strong and abrasive cleaning agents.Risk of damage from returning condensate. Install the exhaustduct in such a way that it falls away from the appliance slightly(1° slope).Environmental protectionUnpack the appliance and dispose of the packaging in anenvironmentally-responsible manner.Environmental protectionOperating modesThis appliance can be used in exhaust-air mode or circulating-air mode.Exhaust air modeNote: The exhaust air must not be conveyed into a functioningsmoke or exhaust gas flue or into a shaft which is used toventilate installation rooms which contain heat-producingappliances.■ Before conveying the exhaust air into a non-functioningsmoke or exhaust gas flue, obtain the consent of the heatingengineer responsible.■ If the exhaust air is conveyed through the outer wall, atelescopic wall box should be used.Circulating-air modeNote: To bind odours in circulating-air mode, you must installan activated carbon filter. The different options for operating theappliance in circulating-air mode can be found in the brochure.Alternatively, ask your dealer. The required accessories areavailable from specialist outlets, from customer service or fromthe Online Shop. The accessory numbers can be found at theend of the instructions for use.This appliance is labelled in accordance with theEuropean Directive 2012/19/EU concerning usedelectrical and electronic appliances (WEEE –waste electrical and electronic equipment). Theguideline determines the framework for the returnand recycling of used appliances as applicable.The air which is drawn in is cleaned by thegrease filters and conveyed to the exteriorby a pipe system.The air which is drawn in is cleaned by thegrease filters and an activated carbon filter andconveyed back into the kitchen.