56
Noises during Operation
The following noises are characteristic of refrigeration appliances:
•
Clicks
Whenever the compressor switches on or off, a click can be heard.
•
Humming
As soon as the compressor is in operation, you can hear it humming.
•
Bubbling/
When refrigerant flows into thin tubes, you can hear bubbling or splashing noises. Even
Splashing
after the compressor has been switched off, this noise can be heard for a short time.
Regulations, Standards, Guidelines
This appliance was designed for household use and was manufactured in accordance with the appropri-
ate standards. The necessary measures in accordance with appliance safety legislation regulations (GSG),
accident prevention regulations for refrigeration appliances (VBG 20) and the 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.
Technical terminology
•
Refrigerant
•
Refrigerant
Circuit
•
Evaporator
•
Compressor
•
Condenser
Liquids that can be used to a generate a cooling effect are known as refrigerants. They
have a relatively low boiling-point, indeed so low, that the warmth from the food sto-
red in the fridge or freezer can cause the refrigerant to boil and vaporise.
Closed circulation system that contains the refrigerant. The refrigerant circuit compri-
ses primarily of an evaporator, a compressor, a condenser and pipe work.
The refrigerant is evaporated in the evaporator. Similar to all other liquids, refrigerant
requires heat to evaporate. This heat is removed from the interior of the appliance, as a
result the interior is cooled. The evaporator is therefore located inside the appliance or
placed in foam immediately behind the inner wall and thus not visible.
The compressor looks like a small drum. It is driven by a built-in electric motor and is
mounted on the base of the appliance at the rear. The task of the compressor is to
draw in vaporised refrigerant from the evaporator, to compress it, and to pass it on to
the condenser.
The condenser normally has the form of a grid. The refrigerant compressed in the com-
pressor is liquefied in the condenser. During this process, heat is released to the surro-
unding air at the surface of the condenser. The condenser is mounted on the base of
the appliance.