Structure and compositions:

-Compressor: 1/2HP, single phase 220V, control box;

-Condenser: Air-cooled type, single phase 220V, include transparent glass tube;

-Evaporator: tube air-cooled type, transparent chamber, damper;

-Accumulator: 1/2HP, transparent glass type;

-Expansion valve: manual expansion valve(welding type)

-Electronic valve: 3/8” nut clamp type or welding type;

-Filter dryer: 3/8” nut clamp type or welding type;

-Manometer: High pressure, low pressure;

-Sight glass: Welding type or nut clamp type;

-Digital thermometer: 6pcs,(temperature control type);

-High&low pressure switch: LPS, HPS;

-Safety device: blocking overvoltage(N.F.B), buzzer, fuse.

Training content

- Investigate refrigerator defrosting by automatic temperature and pressure controller.

- Theory/experiment of refrigeration system for automatic control experiment.

- Observe the status and flow of refrigerant and principle.

- Circuit arrangement training: Compressor-Condenser-Filter dryer-Sight glass expansion valve-Evaporator-

  Compressor.

- Basic, defrosting, evaporation experiments.

- Drawing Mollier’s chart with the data taken with current arrangement.

- Experiment of controlling temperature and pressure (high/low).