8Cleaning instructionsTo ensure optimal performance of the unit,cleaning has to be carried out at regularintervals. Please consult authorised dealer.• Switch off the power supply and unplug beforecleaning.• Do not touch the aluminium fin, sharp parts maycause injury.• Do not use benzine, thinner or scouring powder.• Use only soap ( pH 7) or neutral householddetergent.• Do not use water hotter than 40 °C.Indoor unitWipe the unit gently with a soft,dry cloth.Front panelWash gently and dry.Remove the front panelFor CS-PC9QKH, CS-PC12QKH:POWERTIMERFor both sides3 2Raise1Pull out the panel3Slide to the right or left2For CS-PC18QKH, CS-PC24QKH, CS-PC28QKH:POWERTIMERRaise1Pull out2Close it securelyPOWERTIMERInsert at both sides1Press both ends of the front panel3Close down2For CS-PC18QKH, CS-PC24QKH, CS-PC28QKH:Press at center of the front panel.4Air fi ltersEvery 2 weeks• Wash/rinse the filters gentlywith water to avoid damage tothe filter surface.• Dry the filters thoroughly under shade, awayfrom fire or direct sunlight.• Replace any damaged filters.Remove air fi lter Attach air fi lterInsert into the unitFor seasonal inspection after extendednon-use• Checking of remote control batteries.• No obstruction at air inlet and air outlet vents.• After 15 minutes of operation, it is normal tohave the following temperature differencebetween air inlet and air outlet vents:COOL: ≥ 8 °CFor extended non-use• Turn off the power supply and unplug.• Remove the remote control batteries.Indoor unitAluminium finAir filtersFront panelPOWERTIMER