15) How much minimum gap is left on either side of the refrigerator from the wall during installation?

16) Where the dehydrator is installed in a refrigeration system?

17) Which device meters the amount of refrigerant entering the evaporator in window AC?

18) Which gas is used for flushing blocked capillary tube?

19) Which component is connected in series with bimetal thermo in a frost free refrigerator?