Low Side/Evaporator Temperature

Low Side/Evaporator Temperature

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

Pressure/Temperature Graph, Low Side/Evaporative Temperature Fig.1:

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 pressure to temperature relationship graph for 'low side' pressures plotted in Fig. 1. The 'System Pressure Fault Classification' chart shows the interpretation that may be made by this difference. The 'Normal' condition is that which is relevant to the prevailing evaporator temperature. System Pressure Fault Classification

NOTE: The system controls will turn off the compressor if the evaporator temperature falls to 0 °C. The graph is typical of HFC 134A