hi guys ,

i was working with one of my colleagues the other day when we had to recharge a display fridge with r134a , he charges SYSTEM by relating to the temp pessure relationship , he adds the gas until he gets correct temp on gauges ? say

r134a low side temp is at -5 oC (nowing that the refridgerant will take out 10oC leaving us with a dislay fridge at + 5 oC) so he charges untill he gets the correct temp which then translates to 1.5 bar = -5 oC is this correct ?

rnt we reading the suction pressure that depending on pipe runs etc , couldnt they add up to higher superheat so therefore giving higher pressure readings???

bit confussed !

and trust me it doesnt take much !!