It is sometimes abnormal that the exhaust temperature of the refrigerated dryer is too high. The causes are:

① The temperature of compressed air is too high or the flow is too large;

② The working condition of the refrigeration system changes. Cause the medium evaporation temperature to rise, so that the compressed air in the evaporator can not be cooled enough;

③ The heat dissipation of the external wall of the precooler pipe is too large.