This is why a nitrogen purge is needed when a current Heating in addition to A/C system is being installed or as section of a refrigerant recharge
Russian chemist Dmitri Mendeleev ( 1834-1907) is credited with creating the periodic table of elements! She was smart enough to realize that her table was incomplete so she left blanks where she predicted that yet to be discovered elements would fit! What I find amazing about Mendeleev’s table is how it is based upon the 19th century thinking that electrons were like little planets spinning around the nucleus. The image was of electron “shells” layering upon each other as the complexity of the elements increased… Each row of the periodic table represents a shell while each column represents a series of elements that are chemically similar as in #29 copper (Cu), #47 silver (Ag), in addition to #77 gold (Au). I’ve always felt sorry for #7 nitrogen (N)… She sits right next to her sister atom #8 oxygen (O) on the periodic table in addition to she is like the plain Jane with her seven electrons. Oxygen’s extra electron makes her the more “charming” of the more than 2 in addition to gives her a host of chemical talents that nitrogen could never hope to duplicate such as being the essential element for life in addition to the ability to combust; Fortunately, nitrogen has her crucial roles in addition to 1 of them is to keep her more popular sister from damaging your Heating in addition to A/C system, then certain metals find oxygen irresistible. Iron will rust in addition to copper, the same material in the cooling tubes of your Heating in addition to A/C, will form the familiar greenish patina that can flake off in addition to damage your Heating in addition to A/C system. This is why a nitrogen purge is needed when a current Heating in addition to A/C system is being installed or as section of a refrigerant recharge. Nitrogen just prefers to carry that oxygen along with her into the atmosphere where she outnumbers her wayward sister by a several to 1 ratio.