■Technical Description
1. Available to experiment and test by temperature or pressure control in two-stage compressing and expansion system.
2. Using solo coolant for two-stage compressing and expansion system.
3. As variable pressure at middle cooling device, available to check temperature change.
4. The sequence screen attached to the graphic module control department and power
automatic control machine for experiment on temperature, pressure and automatic
control and operation
5. The experiment on cycle change of refrigeration equipment according to temperature
and Mollier diagram drawing in P-I diagram drawing part.
6. The control department is made up of visual lamps separated system from machine
department
7. Automatic control with graphic panel and two automatic control modules
8. Data formation by data auto-saving and P-I diagram auto-operation in the system with
control program

■Experiments(Study objectives)
- Fitting refrigerant Trainer
- Vacuum test Trainer
- Leak test Trainer
- Troubleshooting at two-stage system machine
- Troubleshooting at electric circuit
- Fitting electric circuits for two-stage system Trainer
- Refrigeration effect as ratio of the expansion V/V in two-stage system Trainer
- Temperature control at evaporator
- Temperature control at condenser
- Pressure control at low side
- Pressure control at high side
 Understanding of middle cooler operation
 Component understanding of two-stage system
 COP calculation for two-stage system

■Specifications
- Compressor : 1/2HP 1ea, 1HP 1ea
- Condenser : Air-cooled type
- Evaporator: pin, Tube air-cooled type
- Evaporator chamber
- Middle cooler
- Expansion Valve : manual type
- Liquid receiver : 1/2HP
- Accumulator  : 1HP 2ea
- Electronic valve : 3/8" nut clamp type
- Manometer
- fitting nipple
- Sight Glass
- Electric control module: DC24V
- Graphic module: digital DC24V
- Thermostat range: -50℃~100℃
- Pressure switch range:
  Low side: 0bar~5bar
  High side: 5bar~30bar

■Dimensions and weight
- Size(LxWxH):  1600x730x1720mm
- Weight: 200kg

■Including
- Electric control module
- Graphic module
- Refrigeration Machine module
- Banana jack: 20 each of black and red
- User manual book

■Option
- Transparency condenser
- Transparency accumulator
- Data acquisition module (MSR1000)
- Computer Monitoring program S/W (MSM1000)
- Control program S/W aid computer
- Refrigeration simulation training
  program S/W
- BLDC compressor