New tech R-22

Please give me some general advice.
I work on R-22 systems. The ambient tempratures are around 85- 95 degress F. I understand how to connect gauges and I can download a temprature-pressure chart. Tell me what I pressures I should be looking for and how I arrive at those pressures. Thanks in advance for any and all help.

you don't go by pressure really, you go by subcooling and super heat.

Look here = http://www.refrigtech.com/charge.html