ZM7132R Trainer refrigeration control Vocational Education Equipment For School Lab Air Conditioner Training Equipment

Study of an industrial case controller in a commercial freezer 
Real components: case controller with control panel, expansion valve, pressure transmitter, temperature probe 
Case controller controls: fan, rail heat, expansion valve, day / night output, compressor, alarm, defroster, defrost start 
Front panel with system diagram, signal lamps 
Temperature measurement points: environment, refrigerant outlet, air before and 
after evaporator, evaporator surface (defrost sensor) 
