hello guys and gals., i am working on a rtaa 140 that was built prior to 94.,
1991 actually, anyways i am doing a high side repair, has old ucp 1 controls., (the blue one), i have a set of gauges hooked up , looking at low side, doing service pumpdown, and the danger or the question that i have is why am i not supposed to drop below 20* and if i do what happens? also i know that if it does fall below 20* to pull 1f15, .,
am i going to need to recover the left over gas or is the evap going to hold 100%?
can i perform a pumpdown on 1 circuit and have the other run.,
i am not thinking so.,
can i get some inside info?