Product Name: The Refrigeration System in an 

    Extremely Low Temperature Trainer

Model Name: YESR-7000

Technical Description

• It is able to do experiments and understand about temperature, 

 pressure structure and mechanical trouble of auto control system by 

 ice thermal storage

• Effective to understand the principle of deice and refrigeration system by 

 using ice thermal storage

• It is able to set up the temperature scope of measurement to create the P-I 

 diagram so it makes these experiments and trainings available of equipment,

 Mollier diagram, and data saving.

• Theoretical education, experiments and trainings are available for the efficiency 

 test of deice and ice thermal storage

• Theoretical education, experiments and trainings are available for the fundamental 

 circuit and application circuit of deice by ice thermal storage.

• Sequence panel is consist of automatic control of graphic device, and it is able 

 to experiment and train the controls of temperature, pressure and humidity 

 adjustment by connecting circuit to power.

• Consist of transparent accessories to visualize the state, principle and flow 

 of refrigerant

• Unlike separation system in mechanical part, the control units are visualized.

• Automatic control for graphic panel with two automatic control modules

• Operating Control(ON,OFF) of monitoring and machine using data saving 

function and electric control board in the PC via YESR-DAQ (optional accessory)

• Fault insertion & simulation, Data acquisition and P-I diagram drawing 

via YESR-DAQ (optional accessory)

• Manual with theory and experiments







Machine

• Compressor : 1/2HP, 1HP 2EA(NO1, NO2 refrigerator), single-phase 220V, 

                       Control Box

• Condenser : Air-cooled type

• Plate heat exchangers (low temperature side), Evaporator: Tube type

• Accumulator, Receiver tank : 1/2HP

• Expansion Valve: manual expansion valve(2EA),capillary tube(1EA)

• Electronic Valve for operation : nut clamp type or welding type (3EA)

• Filter dryer : nut clamp type or welding type (2EA)

• Manometer: High Pressure(2EA), Low Pressure(2EA)

• Charging nipple : Attached to a nipple for Charging

• Sight Glass : welding type or nut clamp type (2EA)

• High and Low pressure switch : LPS, HPS

• Temperature Sensor : 8~11EA

• Pressure Sensor : 4~6EA