Refrigerator Model Training System Educational School Laboratory Workbench Vocational Education Equipment Refrigeration Trainer

1. Scope of Supply
The BasicRefrigeration TrainingDevice,fully assembled,tested,and ready for operation,including all standard accessories,documentation,andtraining materials as specifiedherein.
The equipment is designed forvocational and technical educationin refrigeration and air-conditioning
fundamentals with RFID power management system including installation, operation, control,maintenance, and troubleshooting.
2. General Description
TheBasicRefrigeration Training Devicea fully operational refrigerationsystem configuredon a
movabletraining bench.Thesystem replicate the structure and working principles ofa split-typeair-conditioning
unit and allowhands-on practice of:
Refrigeration cycle operation
Electrical control circuit wiring
System commissioning and debugging
Maintenance and fault diagnosis
Performance measurement and analysis
Thesystem including clearly arrangedand labeled components,transparent observation ports,
complete refrigeration piping,and fully wired electrical circuits suitable for instructionaluse.
Refrigerantused R134a
3. Construction Requirements
3.1 Mechanical Structure
Bench-type structure constructed from aluminum profle and sheet metal
Overall dimensions:
1200 (L) × 700 (W) × 1600 (H) mm
Mounted on four casters:
Two (2) with brakes
Two (2) without brakes
Front demonstration panel with:
Screen-printed refrigeration circuit diagram
Color-coded piping (red/blue to indicate refrigerant state)
Clearly marked component layout
4. Technical Parameters
Parameter
Requirement
Power Supply Single-phase 220V ±10%,50Hz
RatedCurrent 16A
R134a
Refrigerant
Cooling Type Direct expansion
Protection
Earth leakage circuit breaker

5. Main Components and Specifications
Thesystem include,butnotbe limited to,the following components:
5.1 Refrigeration Components
1. Compressor
Power:1/3HP
Voltage: 220V AC,50Hz
Compatible with R134 agas
2. Condenser
Natural cooling
Refrigerantports:6.4 mminlet/outlet
Adjustable fan speed (if applicable)
3. Evaporator with Fan
Direct expansion type
Ports:1/4"
Intermal volume approx.412× 310x 290 mm (±10%)
Includes refrigerator and freezer compartments
4.Throttling Device
Capillary tube type
5.Filter-Drier
1/4" service ports
6.Service Valves
High-pressure and low-pressureports (1/4）)
7. Manual Valves
Flare-threaded comection
1/4"pipediameter
8. Sight Glass
Installedon liquid line,suction line,and evaporator inlet(3 pcs)
5.2 Instrumentation and Measurement
1. Low-Pressure Gauge
Range:-30～260 psi/-0.1～1.8 MPa
2. High-Pressure Gauge
Range:-30～550 psi/-0.1～3.8MPa
3. Analog Voltmeter
 0~250V
4.Analog Ammeter
0~10A
5. Digital Thermometers (4 pcs)
Range:-40°Cto +90°C
NTC thermocouple (10KQ at 25°C)
6. High/Low Pressure Controller
Flare threaded connection
Pipe diameter: Φ6 mm
5.3 Electrical System
Earth Leakage Circuit Breaker(220V,16A)
Self-locking key switch
Emergency stop button (self-locking)
Overload protector (10A)
Indicatorlights(5pcs)
Digital temperature controller and sensor
Complete control wiring ready for training exercises
6. RFID Power Management System (Mandatory)
Thesystem include anintegrated RFID-based power managementsystemwith the following
features:
Operating frequency: 13.56 MHz (High Frequency)
Communication via RS485
Audible status prompts
LED indication
OLED display for card number and error codes
Data verification function
Parameter configuration software
Support for:
ISO-15693 protocol
ModBus_TCP
ModBus_RTU
TheRFID system allow card-based activation oftheequipmentand enableinstructional
management control.
7. Standard Accessories
Thefollowing accessories supplied:
1. Dual compound pressure gauge set (for R404A, R407C,R134a, R22)
2.Digital thermometer
3. AC clamp meter(60ov AC/DC,60oAAC,capacitance &resistance measurement)
4. Vacuum pump (1L capacity)
5. Tool kit including:
Oxygen cylinder (2L)
Fuel gas cylinder
Welding torch
Toolbox
6. R134a refrigerant (1 unit)
7. Neon test light (12-250V)
8. Experiment manual (1 copy)
8.Functional Capabilities
Theequipment support the following instructional exercises:
1. Compressor wiring practice
2. Refrigeration control circut construction
3. System start-up and operation management
4. Refrigeration characteristic analysis
5. Molier diagram plotting
6.System performance calculation
7.Troubleshooting and fault diagnosis
8. Pressure and temperature measurement
9. Refrigerant charging and evacuation practice