1. Scope of Supply:
The supplier shall provide complete Basic Refrigeration Training Device, fully assembled, tested, and ready for operation, including all standard accessories, documentation, and training materials as specified herein.
The equipment shall be designed for vocational and technical education in refrigeration and air-conditioning fundamentals with RFID power management system including installation, operation, control, maintenance, and troubleshooting.
2. General Description:
The Basic Refrigeration Training Device shall be a fully operational refrigeration system configured on a movable training bench. The system shall replicate the structure and working principles of a split-type air-conditioning unit and allow hands-on practice of:
Refrigeration cycle operation
Electrical control circuit wiring
System commissioning and debugging
Maintenance and Fault Diagnosis
Performance measurement and analysis.
The system shall include clearly arranged and labeled components, transparent observation ports, complete refrigeration piping, and fully wired electrical circuits suitable for instructional use.
Refrigerant used shall be R134a or equivalent environmentally acceptable refrigerant.
3. Construction Requirements:
3.1 Mechanical Structure:
Bench-type structure constructed from aluminum profile and sheet metal.
Overall dimensions (Minimum): 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
Rated Current: 16A (Minimum)
Refrigerant: R134a or equivalent environmentally acceptable refrigerant.
Cooling Type: Direct expansion
Protection: Earth leakage circuit breaker
5. Main Components and Specifications:
The system shall include, but not be limited to, the following components:
5.1 Refrigeration Components
6. Compressor
Power: 1/3 HP (minimum)
Voltage: 220V AC, 50Hz
Compatible with R134a or equivalent gas
7. Condenser
Natural cooling
Refrigerant ports: 6.4 mm inlet/outlet (minimum)
Adjustable fan speed (if applicable)
8. Evaporator with Fan:
Direct expansion type
Ports: 1/4" (minimum)
Internal volume approx. 412 × 310 × 290 mm (±10%)
Includes refrigerator and freezer compartments.
9. Throttling Device:
Capillary tube type
10. Filter-Drier:
1/4" service ports (minimum)
11. Service Valves:
High-pressure and low-pressure ports (1/4") (minimum)
12. Manual Valves:
Flare-threaded connection
1/4" pipe diameter (minimum)
13. Sight Glass:
Installed on 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 ~ 3.8 MPa
3. Analog Voltmeter:
0 ~ 250 V
4. Analog Ammeter:
0 ~ 10 A
5. Digital Thermometers (4 pcs)
Range: -40°C to +90°C
NTC thermocouple (10KΩ 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) (minimum)
Indicator lights (minimum 5 pcs)
Digital temperature controller and sensor
Complete control wiring ready for training exercises
6. RFID Power Management System (Mandatory):
The system shall include an integrated RFID-based power management system with the following features:
Operating frequency: 13.56 MHz (High Frequency)
Communication via RS485 or standard
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
The RFID system shall allow card-based activation of the equipment and enables instructional management control.
7. Standard Accessories
The following accessories shall be supplied:
8. Dual compound pressure gauge set (for R404A, R407C, R134a, R22)
9. Digital thermometer
10. AC clamp meter (600V AC/DC, 600A AC, capacitance & resistance measurement)
11. Vacuum pump (1L capacity)
12. Tool kit including:
Oxygen cylinder (2L)
Fuel gas cylinder
Welding torch
Toolbox
13. R134a refrigerant (1 unit)
14. Neon test light (12–250V)
15. Experiment manual (1 copy)
16. Functional Capabilities:
The equipment shall support the following instructional exercises:
17. Compressor wiring practice
18. Refrigeration control circuit construction
19. System start-up and operation management
20. Refrigeration characteristic analysis
21. Mollier diagram plotting
22. System performance calculation
23. Troubleshooting and fault diagnosis
24. Pressure and temperature measurement
25. Refrigerant charging and evacuation practice.
Manuals:
Detailed User manual, Training/experiment manual, Electrical schematics, Refrigeration circuit diagram, Maintenance manual, List of spare parts, RFID system documentation and software should be supplied with the machine in English (Hard copy and/or soft copy).
Login 
Inquiry List
