Graphs - Pressure Against Evaporator Temperature

Graph - High Side Pressure against Ambient Temperature







1. The 'Normal' condition is that which is relevant to the prevailing ambient temperature.


Graph - Low Side Pressure against Evaporator Temperature

Graph-Low Side Pressure against Evaporator Temperature:

1. (To obtain lbf/in2 from bar, multiply the figure by 14.5)

Probable causes of faults may be found by comparing actual system pressures, registered on your manifold gauge set or recovery/recharge/recycle station, and the relevant pressure to temperature relationship graph. The following chart shows the interpretation that may be made by this difference.


NOTE: The A/CCM will disengage the compressor clutch should the evaporator temperature fall to 0 °C.


NOTE: Graphs are typical for HFC 134A


The 'Normal' condition is that which is relevant to the prevailing evaporator temperature.