YUY-920P Refrigeration Circuit Electrical Control Training Board

1. Product Overview: The refrigeration circuit electrical control training board device adopts an open design, equipped with refrigeration pipeline equipment, and is installed with various circuit schematic training boards. The electrical components required for the circuit are mounted on the training board. Students can perform wiring training for refrigeration circuits according to the requirements of the circuit schematic, analyze relevant indicator data of the refrigeration loop, and analyze common faults in the refrigeration loop. It is suitable for technical colleges and vocational schools as practical training for basic refrigeration skills. This training equipment mainly uses refrigeration pipelines, refrigerator training circuits, and other components as the training platform. Students can perform wiring training for refrigeration circuits according to the requirements of the circuit schematic. Complete the wiring training of refrigeration circuits, analysis of relevant indicator data of the refrigeration loop, and analysis of common faults in the refrigeration loop. It is suitable for technical colleges and vocational schools as practical training for basic refrigeration skills.

2. Features (taking a direct-cooling refrigerator as an example)(1) The training device visually displays the system structure and working principle of a direct-cooling refrigerator, allowing clear observation of the refrigeration cycle system structure and the physical objects of main components, which is convenient for teaching demonstration and explanation, as well as for students to understand and master the knowledge in textbooks. In addition, a sight glass is installed in the pipeline to observe the state of the refrigerant; each section of the pipeline is marked with colors for easy identification by students, with the high-pressure pipeline in red and the low-pressure pipeline in blue.(2) The training cabinet integrates direct-cooling and refrigerator functions. The refrigerator system is real and complete, with a clear and compact structure, consistent with the actual refrigerator refrigeration system and electrical system. It can also meet the training requirements for direct-cooling and refrigerator systems.(3) The system uses real refrigeration units (compressor, finned coil evaporator, aluminum composite plate blown-up evaporator, wire-type condenser, etc.), in line with actual devices.(4) The device is equipped with a wiring area for the electrical control circuit of a direct-cooling refrigerator, which can complete different starting modes and operating modes, helping students apply theory to practice and cultivate their practical operation skills.(5) Simulated faults can be set. Students analyze the possible causes of faults based on the process, determine the scope of the fault, and perform troubleshooting. This is conducive to skill assessment and examination work.3. Product Composition1. Direct-cooling refrigerator refrigeration systemThe training bench provides a refrigerator refrigeration compressor, direct-cooling evaporator, wire-type condenser (17 gears), condenser fan (indirect cooling fan), lighting lamp and door switch, defrost timer relay, compensation heating wire, compensation switch, thermostat (WDF type, WPF type), defrost thermostat (-5°C), defrost thermal fuse (65°C), bimetal thermal overload protector, PTC starter, relay starter, capillary tube, and solenoid valve.2. Instruments(1) 1 AC voltmeter: measuring range 0-250V, accuracy class 1.5, used to monitor the power supply voltage.(2) 1 AC ammeter: measuring range 0-5A, accuracy class 1.5, used to observe the system starting current and normal working current.(3) 1 thermometer: using PT100 sensor, three and a half digit display, switched by a band switch, can measure the freezer temperature, refrigerator temperature, condenser inlet and outlet temperatures respectively. (4) 2 vacuum pressure gauges: measuring ranges -0.1-0.9MPa and -0.1-1.5MPa, can display the pressure on the low-pressure side and high-pressure side of the system.3. Fault setting module(1) The training bench is designed with an automatic fault elimination box. After students detect and find the fault through the corresponding electrical control schematic diagram, they can eliminate the corresponding fault by operating the fault elimination button.(2) The training bench is designed with an independent fault setting system, and various fault phenomena simulate actual fault conditions, achieving a full simulation of actual circuit faults, which is more conducive to trainees' understanding of actual electrical control circuits and familiarity with actual fault conditions.4. Training Content4.1 Basic skills training for junior technicians(1) Operation of special tools(2) Welding of refrigeration system pipe fittings(3) Pressure testing and leak detection of refrigeration system(4) Evacuation and refrigerant charging of refrigeration system4.2 Intermediate skills training (design, installation, commissioning, and maintenance)(5) Recognition and measurement of refrigerator electrical circuit components(6) Wiring of direct-cooling refrigerator electrical control circuit and system operation(7) Direct-cooling refrigerator maintenance training and fault analysis4.3 Refrigerator fault repair(10) Door light open circuit(11) Composite door switch common terminal open circuit(12) Fan motor open circuit(13) Door switch open circuit(14) Compensation switch open circuit(15) Defrost thermostat open circuit(16) WDF thermostat H-L terminals open circuit(17) WDF thermostat L-C terminals open circuit(18) WPF thermostat L-C terminals open circuit(19) Defrost timer relay BW-BK terminals open circuit(20) Defrost thermal fuse open circuit(21) Compensation heating wire open circuit(22) Defrost heating tube open circuit(23) Thermal overload protector open circuit(24) PTC starter open circuit(25) System blockage due to dirt(26) System ice blockage2. Main Technical Parameters:1. Input power: AC220V±5% 50Hz2. Rated current: 5A3. Ambient temperature: -5°C~40°C4. Relative humidity: ≤90% (25°C)5. Dimensions: 1000×600×1200mm6. Weight: 50kg