General-Purpose Refrigeration and Heating Training Equipment

General-Purpose Refrigeration and Heating Training Equipment

I. Product Overview: General-purpose refrigeration and heating training power supply panel, steel training table; student stool assembly (plastic steel stool surface (blue) + iron stool); refrigerator demonstration circuit board; product accessory package; battery; training and assessment instruction manual;

II. Functional Features:
1. Air conditioner demonstration circuit board: The tabletop portion is made of 25mm thick high-density fiberboard with an imported fireproof board veneer, PVC edge banding, and a duckbill-shaped design on the table edges. The tabletop is wear-resistant, heat-resistant, stain-resistant, smoke-resistant, fire-resistant, antibacterial, mildew-proof, antistatic, and easy-to-clean.
2. Simulation board: Made of high-grade copper-clad printed circuit board, the outer frame is injection molded from ABS plastic. The flow of electronic flashlights on the simulation board simulates the flow of Freon in an air conditioner or refrigerator during operation, helping students understand the working principles of air conditioners and refrigerators.
3. AC Power Supply Control Unit: Single-phase three-wire 220V AC power supply; two AC voltmeters (0-250V range) for monitoring mains voltage; two AC ammeters (0-5A and 0-10A ranges respectively) for observing system startup current and monitoring normal operating current; a leakage current protector controls the main power supply to the control panel, which is controlled by a key switch.
4. Refrigeration System Pressure Detection Unit: Provides four vacuum pressure gauges (-0.1-0.9MPa, -0.1-1.5MPa, and -0.1-3.5MPa ranges respectively) for measuring the high and low pressure sides of the air conditioning and refrigerator systems.
5. Temperature Detection Unit: Provides two 3.5-digit digital thermometers, switchable by a band switch to display temperature changes at different points.
6. One set of current-type leakage current protection device: Trips off the power supply if the leakage current to ground exceeds a certain value; includes thermal protection devices for compressor overheating and overload protection.

III. Technical Specifications:
1. Power Supply: Single-phase three-wire 220V±10% 50Hz;
2. Safety Protection: Leakage protection (operating current ≤30mA), overcurrent protection, fuse protection;
3. Dimensions: 1600×700×1550mm;
4. Rated Power: 1.5KW;
5. Cooling and Heating Capacity: Cooling 530K, Heating 600K;
6. Refrigerant: Air Conditioner F-22, Refrigerator F-12;
7. Ambient Temperature: -10℃~40℃;

IV. Training Projects:
A. Air Conditioner Faults;
1. Pressure controller open circuit;
2. Remote control receiver +5V open circuit;
3. Indoor fan open circuit;
4. Four-way valve open circuit;
5. Four-way valve coil open circuit;
6. Condenser fan open circuit;
7. Overheat and overload protector open circuit;
8. A. Compressor operating capacitor open circuit;

B. Refrigerator partial faults;
1. Power supply open circuit;
2. Overload protector open circuit;
3. Starter short circuit;
4. Bulb filament open circuit;
5. Thermostat open circuit;
6. Defrost timer motor open circuit;
7. Thermal fuse open circuit;
8. Heating element open circuit;
9. Defrost timer open circuit;