• The refrigerator temperature, pressure, defrosting automatic control, fault diagnosis of configuration testing should be available for training.
• Mechanical part of high-pressure, low-pressure lines should be distinguished by the naked eye, and each element should have a thermometer depends on changes in the cycle of refrigeration equipment and Molier-diagram drawing in drawing part should be available for experimentation and practice.
• Operable device without the control unit via the control switch of the machine unit.
• Mechanical and graphics module should be integrated and mechanical part and graphics should consist of one body.
• Refrigeration Training Equipment operation circuit should consist of wiring and jacks.
• This equipment should be possible for operating test and practice.
• Equipment in the front of the mechanical part of the main components should be arranged in vertical machine is added to replace the graphics module.
• A condenser fan motor should be controlled through a pressure and temperature as possible; it is possible to program the computer.
• There should be watt hour meter, to measure the amount of power consumed by the device during operation of the device.
• Communication with a computer with an Ethernet system should be possible and controlled by a computer program.
• Overload cut-off when an abnormality occurs during operation temperature, pressure, freezing of teaching equipment, the operation of the pressure switch, safe driving another circuit configuration using the power cutoff device to another of the control unit and the machine part is possible and there capable of fault diagnosis.
• Enable the output of data for fault diagnosis of the machine unit.
• If the structure may be an alarm is output when an abnormality occurs in each part of the machinery in a computer program, the contents of the alarm can be confirmed, the user is dealing.
• This equipment should be possible for operating test and practice.
• Should be able to Data auto-save and auto drawing P-I diagram.
• Monitor and operate computer-controlled machine part (ON-OFF function), should be available for fault diagnosis.

Mechanical unit:

• Compressor: 1/2HP, single phase 220V, with control box, compressor type: reciprocating compressor, refrigerant used: R-134a
• Condenser: 1/2HP, single-phase 220V, condenser type: air-cooled, fan motor: 9W, fan: 1ea included. It should be possible to check the phase change through the transparent pipe, including the transparent pipe holder.
• Evaporator: 1/3HP, single-phase 220V, condenser type: air cooling, fan motor: 9W, fan: 1ea included. It should be possible to check the phase change through the transparent pipe, including the transparent pipe holder.
• Receiver: 1/2HP, internal structure and refrigerant can be checked, and it should be made strong enough for pressure.
• Liquid separator: 1/2HP, internal structure and refrigerant can be checked, and it should be made strong enough for pressure.
• Solenoid valve: 3/8'' nut fastening type, 220V, 50~60Hz, HFC others, type: direct acting.
• Filter dryer: 3/8'' nut fastening type or welding type.
• Sight glass: 3/8'' nut fastened or welded.
• Expansion valve: 3/8'', 1/2'' nut fastening type, or welding type.
• Refrigerant used: R-134a
• Charging nipple: 1/4'' ?
• Pressure gauge: refrigeration oil gauge, high pressure 35bar, low pressure 15bar, measuring refrigerant: R-134A, size: 68mm dial.

Piping:

• It should be possible to check the internal phase change with a transparent pipe.

Automatic control:

• Relay: Min. 8 pin: 3ea NFB, Rated current: 15A, rated breaking capacity: 220V/5kA
• Magnetic switch: Rated current: 9A, Rated voltage: DC24V
• Thermal relay: 9~12A
• Watt meter: digital type
• Lamp: Red, Green, Yellow, White
• LPS, HPS, DPS: digital pressure device, low pressure side high pressure side: 1.5 MPa, 3.3 MPa
• Select switch: 1a1b