Originally Posted by
.429&H110
I learned refrigeration in trade school.
You have a community college that might let you audit a class and see all the ways and ways of magic.
Taught me to bend and swedge copper, all sizes, rarely use a fitting. Fittings cost money, look bad.
Drop a silver ring in the fitting first, heat until the silver shows. Quick and minimum silver.
If you see a someone soldering refrigeration without a nitrogen purge your job is doomed.
Copper oxidizes on the inside to sandpaper grit, water plumbing washes it out
but in a sealed system you will have grit lubricating the compressor.
Compressors don't die, techs kill them.
It's a big subject.