Ok so yeah I'm a noob and I got my 609/608 universal online without schooling but i did read quite a bit and think i got most fundamentals. I have a few loose ends to tie up hopefully all of you can help me... First some background.. The restaurant I work for wanted me to be the refrig guy so i got the cert and they got me the tools.. they are
JB 7cfm vac pump (DV-200n)
Appion g1 recovery unit
YJ 4 brute 4 valve manifold (large vac hose)
YJ micron 69075
JB atlas scale
h10-pm leak detector
I hope the quality of this equipment is good enough for my testing.
I know use copper and all that but i used to have a supco vg64.. microns kept rising with gauge hooked right to pump.. read bad reviews about the gauge (rising microns on blank off) so i got the YJ one. same thing.. ok so now i gotta get an empty recovery tank use (large volume of space more forgiving of tiny leaks/metal outgassing) all metal lines and see if i can indeed hold under 500 microns cause i want to see it done! When will my new hoses stop outgassing so much? Are there techs out there that can hold under 500 with a charging manifold/rubber hoses?? How long might it take to accomplish this as well??
ok you have a 3/4 HP condensing unit. Burning out/oil compatibility aside, what would happen if you replaced the compressor with a 1HP version or lets say a .5HP version.. Would just pressures change (more on low side) and therefore mass flow or would more than just that happen. Why do they make it sound so complicated?? again.. aside from oil compatibility or acids from burnouts.. just HP ratings and straight replacements..