51Noises during OperationThe following noises are characteristic of refrigeration appliances:• ClicksWhenever the compressor switches on or off, a click can be heard.• HummingAs soon as the compressor is in operation, you can hear it humming.• Bubbling/SplashingWhen refrigerant flows into thin tubes, you can hear bubbling orsplashing noises. Even after the compressor has been switched off,this noise can be heard for a short time.Regulations, Standards, GuidelinesThis appliance was designed for household use and was manufacturedin accordance with the appropriate standards. The necessary measuresin accordance with appliance safety legislation regulations (GSG), acci-dent prevention regulations for refrigeration appliances (VBG 20) andthe regulations of the German Society of Electrical Engineers (VDE)were observed in the manufacture of this appliance.The refrigerant circuit has been checked for leaks.; This appliance is in accordance with the following EU guidelines:– 73/23/EWG dated 19 February 1973 - low voltage guidelines.– 89/336/EWG dated 3 May 1989(including guideline change notice 92/31/EWG) - EMV guideline– 94/2/EC dated 21. 01. 1994 - Directive on Energy Labelling– 96/57 EC dated 3. 9. 1996 - Energy Efficiency Requirements ofHousehold Electric Refrigerators, Freezers and Combinations thereof.