The refrigerant flows through the coils on the back or under the freezer and through an expansion valve to the inside of the freezer. As the refrigerant passes through the expansion valve the pressure drops and hence the temperature also drops.
The noun MM has 1 sense: 1  1. a metric unit of length equal to one thousandth of a meter. 2  Meaning: 3  A metric unit of length equal to one thousandth of a meter. 4  Classified under: 5  Nouns denoting quantities and units of measure. 6  Synonyms: 7  millimeter; millimetre; mm. 8  Hypernyms (mm is a kind of...):
MM is an abbreviation that may represent one million (See 1st related link below). M typically represents one thousand, so MM literally conveys a thousand thousand.--M is the roman numeral for 1000. Roman numerals do not interpret adjacency in the same way as equations (ie multiplication).M is an abbreviation that may represent one million (See 1st related link below). M typically represents one thousand, so MM literally conveys a thousand thousand.