I was taught to purge copper lines with argon or nitrogen while brazing.For
leibert units,med gas and such.
I was talking to a residential installer and he acted as if he never heard
of doing so..Do most residential installers braze up copper lines without
It all depend on the size of system line length, how many brazes
is going to done ETC. you should take precautions to keep system clean
what type of refrigeration system is, technician must decide when he or she
evaluate system to be repair.
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