23Some useful information and advice1. The variable shelves are worth paying attention to, which increases the usabil-ity of the fresh food compartment considerably. Rearranging the shelves isalso possible when the door is open at an angle of 90 .2. After opening and closing the door of freezer vacuum will rise inside theappliance because of the low temperature. So wait 2-3 minutes after closingthe door - if you want to open it again - while inner pressure equalises.3. Take care of opening the freezer at a position of thermostatic control so thatthe inside temperature can never be warmer than -18 C.4. It is practical to make sure of faultless operation of the appliance daily so asto notice possible failure in time and prevent deterioration of frozen foods.5. Normal operating sounds:A thermostat controls the compressor and you will hear a faint click whenthermostat cuts in and out.You may hear faint gurgling or bubbling sound when the refrigerant ispumped through the coils at the rear, to the cooling plate/evaporator.When the compressor is on, the refrigerant is being pumped round and youwill hear a whirring sound or pulsating noise from the compressor.The fridge evaporator (this part cool down the fridge section) is foamedinto the cabinet. The temperatureof this part changing during itswork, and parallel with this itsdimensions are slightly changing,too. These changes might cause acracking noise, which is a natural,harmless phenomenon.6. Should you want to check the tem-perature of food stored in the refrig-erator, place a glass of water cen-trally in the cabinet, and put a prop-er thermometer with an accuracy of+/- 1 °C into it. If after 6 hours youmeasure a value around that seen onthe display, the refrigerator worksproperly. The measuring shall be performed under steady-stated conditions(without changing the load).7. If the freezer temperature is measured using a thermometer, put it betweenthe products since this will reflect the real temperature in the frozen prod-ucts. It is normal that the built-in temperature display shows a temperatureslightly above that measured in other ways.