Electrical Faults in Air Conditioning Systems Unit

The Electrical Faults in Air Conditioning Systems Unit, in order to show the most important electrical faults in air conditioning systems, the simulation of a simple air conditioning system with compressor, fan and thermostat and investigations of key electrical components from air conditioning technology.

ATENG 12968 — Electrical Faults in Air Conditioning Systems Unit

Anodized aluminum frame and panels made of painted steel.

The unit includes wheels to facilitate its mobility.

Main metallic elements made of stainless steel.

Diagram in the front panel with distribution of the elements similar to the real one.

Experimental unit for the training of apprentices in the refrigeration field.

Simulation of the electrical circuit of an air conditioning system for cooling.

Real control circuits with electrical components and simulated load circuits.

Electrical simulation of compressor and fan.

Temperature control with thermostat and compressor.

Fan with two adjustable speeds.

Operating states of the simulated components indicated via lamps in the circuit diagram.

Circuit diagram depicted on the front panel.

Identification of 16 faults with the aid of multimeter measures voltages or resistances at the lab jacks.

• Main components of circuit:
• Main contactor:
  2 x 3NO, 1NC.
  3 x 4NO.
  Main switch.
  Automatic fuse.
  Start-up capacitor.
  Start-up relay.
  Overheat protection (bimetallic).
  Lamps for simulated compressor and fan.
• Fan electrical components:
  On/off switch.
  Speed switch.
  Lab jacks.
• Thermostat: -5 °C to 35 °C.
• Digital Multimeter:
• Digital multimeter of about 3 ½ digits, with double-jack ending cables of about 4 mm to facilitate interconnections.
• With this digital multimeter we will be able to measure:
  Voltage.
  Current.
  Resistance.
  Capacitors capacity.
  Temperature.
• Technical details of main components of circuit:
• Simulated compressor start-up current: >3A.
• Thermostat: -10 to 25 °C.
• Power: 200 VAC – 240 VAC/50 Hz or 110 VAC – 127 VAC/60 Hz, single-phase.
  Cables and accessories, for normal operation.