TECR Equipamento de Conexão Elétrica em Compressores de Refrigeração

9.10.3.- PRÁTICAS DE INSTALAÇÕES E MANUTENÇÃO
ELECTRICAL CONNECTION OF REFRIGERANT COMPRESSORS UNIT - TECR

SISTEMAS INOVADORES

The Electrical Connection of Refrigerant Compressors Unit, "TECR", includes the electrical elements required for the start and operation of a refrigerant compressor and the necessary safety elements, arranged on a panel in a clear and visible way, with connections distributed in such a way that they can be easily identified.

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Descrição Geral

The Electrical Connection of Refrigerant Compressors Unit, "TECR", includes the electrical elements required for the start and operation of a refrigerant compressor and the necessary safety elements, arranged on a panel in a clear and visible way, with connections distributed in such a way that they can be easily identified.

The unit mainly consists of a compressor, a receiver, valves to adjust the pressure and electrical and safety elements.

As electrical elements, there is a starting capacitor and starting relay for the compressor, an automatic fuse and protection against overheat (bimetallic). These elements are connected by lab jacks.

The pressure in the system is controlled by two pressure switches (one in the intake side and the other in the delivery side), interrupting the power supply of the compressor. There are also two manometers (one in the intake side and the other in the delivery side) to visualize the pressure variations.

To control the temperature in the system, a thermostat cuts the power supply to the compressor when a specific temperature is exceeded.

Other connection and checking functions of other typical elements of a safety chain in refrigeration, such as an automatic fuse or protection switch against overheat, can also be performed.

EXERCÍCIOS E PRÁTICAS GUIADAS

EXERCÍCIOS PRÁTICOS GUIADOS INCLUÍDOS NO MANUAL

  1. Study and analysis of the electrical connections for a compressor in a refrigeration circuit.
  2. Reading, understanding, wiring and checking of electrical connections diagrams.
  3. Study of the design, assembly and operation of the electrical and safety components for a compressor in a refrigeration circuit:
  • Start-up capacitor.
  • Start-up relay.
  • Automatic fuse.
  • Protections against overheat.
  • Thermostat.
  • Pressure switch.
  1. Design and checking of a safety chain in refrigeration systems.
  2. Study of the symbols and electrical connection diagrams in refrigeration systems.
  3. Study of the safety aspects to be considered when working with mains voltage.

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