1. ONE (1) REFRIGERATION TRAINER SUPERMARKET RACK SYSTEM or Equal The following equipment features/options are required: Compressors (3), Evaporators (2) w/ Temperature Sensors, T.E.V. Valves (2), Air-cooled Condenser, Oil Separator, Oil Filter, Oil Reservoir with (2) sight glasses, Oil Level Solenoid, (3), Oil Differential Check Valve, Liquid Receiver, Cartridge Type Filter-Drier, Removable Suction Line Cannister for Filter-Drier Cartridge, Sight Glass, Suction Accumulator, Suction Shell, Pressure Transducer, (1) High and (1) Low Suction Pressure Gauge, Discharge Pressure Gauge, High / Low Pressure Switch (3), Head Pressure Control Valve, Emerson E2 Controller, Cold Box, Electrical Fault Package, Factory Charged with R404A, Single Phase 220 VAC, 60 Amp Max