Refrigerator Model Training System

MODEL：BORACS-01

1. Scope of Supply:

This equipment is designed for vocational and technical education in refrigeration and air conditioning fundamentals, and is equipped with an RFID power management system covering installation, operation, control, maintenance, and troubleshooting.

2. General Description:

The refrigeration fundamentals training equipment is a full-function refrigeration system configured on a portable training platform. This system simulates the structure and working principle of a split-type air conditioning unit and allows for practical operations in the following areas: refrigeration cycle operation, electrical control circuit wiring, system debugging, maintenance and fault diagnosis, performance measurement and analysis.

The system includes clearly laid out, clearly labeled components, a transparent observation port, complete refrigeration piping, and complete circuitry suitable for teaching purposes.

The refrigerant used is R134a or an equivalent environmentally friendly refrigerant.

3. Structural Requirements:

Mechanical Structure: Tabletop structure made of aluminum profiles and sheet metal.

Overall Dimensions : 1200 (L) × 700 (W) × 1600 (H) mm.

Mounted on four casters: two with brakes, two without brakes.

The front panel includes: a screen-printed refrigeration circuit diagram; color-coded piping markings (red/blue indicating refrigerant status); and a clear component layout diagram.

4. Technical Specifications:

Power Supply: Single-phase 220V ±10%, 50Hz

Rated Current: 16A

Refrigerant: R134a or equivalent environmentally friendly refrigerant

Cooling Method: Direct expansion

Protection Device: Residual current circuit breaker

5. Main Components and Specifications:

This system include, but is not limited to, the following components:

5.1 Refrigeration Components

Compressor: Power: 1/3 hp; Voltage: 220V AC, 50Hz; Compatible with R134a or equivalent refrigerant

Condenser: Natural cooling; Refrigerant inlet: 6.4 mm; Adjustable fan speed (if applicable) Evaporator

with fan: Direct expansion type; Inlet: 1/4 inch ;

Internal volume approximately: 412 × 310 × 290 mm (±10%);

Includes refrigerator and freezer compartments.

Throttling device: Capillary type

Filter dryer: 1/4" service port

Service valve: High-pressure and low-pressure interfaces (1/4")

Manual valve: Flared threaded connection; 1/4" pipe diameter

Sight glasses: Installed at liquid lines, suction lines, and evaporator inlets (3 units)

5.2 Instrumentation and Measurement

Low-pressure gauge: Range: -30 ~ 260 psi / -0.1 ~ 1.8 MPa

High-pressure gauge: Range: -30 ~ 550 psi / -0.1 ~ 3.8 MPa

Analog voltmeter: 0 ~ 250V

Analog ammeter: 0 ~ 10 A

Digital thermometers (4 units): Range: -40°C to +90°C; NTC thermocouples (10KΩ resistance at 25°C)

High/low pressure controller: Flared threaded connection; pipe diameter: Φ6 mm

5.3 Electrical System

Residual Current Circuit Breaker (220V, 16A)

Self-locking Key Switch

Emergency Stop Button (Self-locking)

Overload Protector (10A)

Indicator Lights (At least 5)

Digital Temperature Controller and Sensors

Complete Control Circuitry for Training and Drills

6. RFID Power Management System (Mandatory):

Operating Frequency: 13.56 MHz (High Frequency); Communication via RS485 or standard interface; Audible status prompts; LED indicators; OLED display for showing card number and error codes; Data verification function;

Software: Supports: ISO-15693 protocol, ModBus_TCP, ModBus_RTU; The RFID system allow card- based device activation and support command management control.

7. Standard Accessories

Dual pressure gauge set (for R404A, R407C, R134a, R22)

Digital thermometer

AC clamp meter (600VAC/DC, 600AAC, capacitance and resistance measurement)

Vacuum pump (1L capacity)

Tool kit, including: Oxygen cylinder (2L); Gas cylinder; Welding torch; Tool box R134a refrigerant (1 piece)

Neon lamp (12–250V)

Experiment manual (1 copy)

8. Functional Characteristics:

The equipment support the following teaching exercises:

compressor wiring exercises; refrigeration control circuit construction; system startup and operation management; refrigeration characteristic analysis; Morrillon plot drawing; system performance calculation; troubleshooting and fault diagnosis; pressure and temperature measurement; refrigerant charging and evacuation exercises.

Manuals: The machine comes with an English user manual, training/experiment manual, circuit schematic diagram, refrigeration circuit diagram, maintenance manual, spare parts list, RFID system documents and software (electronic version).