how to read pt chart for r407c

[popa_englezu]

hi,
it probably sounds stupid but i forgot how to read the p t chart.im ok with zeotrope ref but with azeotrope im very confuzed as i dont know on which side to look on the chart(liquid or vapour)when i charge a system(i usually aim for 2-3 deg celcius evap temperature)
if you are unsure pls do not replay to this thread

thx a lot for ur help

[Brian_UK]

A search on the forum brings up this thread which already covers your question, hope that it does answer for you though.

http://www.refrigeration-engineer.co...w-Temperatures