Teaching equipment : Maintenance unit of a household refrigerator

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Maintenance unit of a household refrigerator

DESCRIPTION

The unit contains a hermetic compressor, an air condenser with natural convection, and an evaporator with forced convection.

The process is thermostatically controlled. The internal temperature can be adjusted to the range: +1…10°C. The refrigerant is R134a, to comply with European standards

The refrigerator is a vertical cabinet in which the components are far enough apart to be easily identified.

The refrigerator is equipped with instruments to measure flow rates, temperature, pressure, and electric power. This allows for a complete study of the process.

Teaching equipment : Maintenance unit of a household refrigerator - CRM 016

TECHNICAL SPECIFICATIONS

REFRIGERATOR
- Volume: 372 L
- 1 door with thermo-insulating glazing
- External appearance: stain recovered by white electrostatic paint
- Insulation: HD polyurethane
- Internal light
- 7 adjustable shelves – 40 mm thick

FAILURES
The failures are the most common ones encountered by After Sales Departments.
Failures may be electric or refrigeration component related.
The teacher activates a failure with an infrared remote control. The student must then diagnose the problem.
The student is provided with a portable thermometer, manometer, voltmeter, and ammeter with which to make the diagnosis.

PEDAGOGIC APPLICATIONS

• Functioning and maintenance of a refrigerator
• Functioning of a refrigeration system with vapour compression
• Constructing a diagram of the refrigeration cycle – computation of balance
• Diagnosis of electric or refrigeration failures.

UTILITIES
Electricity : 230 VAC – single-phase – 50 Hz

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Maintenance unit of a household refrigerator


Didatec Technologie - ZA du Parc 42490 Fraisses - France - Tel : 33 (0)4 77 10 10 10 - Fax : 33 (0)4 77 61 56 49 E-Mail : didatec.technologie@wanadoo.fr