Electrical faults in simple air conditioning systems Simulation of a simple air conditioning system with compressor, fan and thermostat Features - simulation of a simple air conditioning system with compressor, fan and thermostat - investigation of key electrical components from air conditioning technology - simulation of 15 faults Learning objectives/experiments - electrical design and principle of operation of simple air conditioning systems - read and understand electrical circuit diagrams - design and operation of electrical components in an air conditioning system -- start-up capacitor -- start-up relay -- overheat protection -- main contactor -- automatic fuse -- on/off switch -- speed switch -- thermostat - fault finding in electrical components -- in idle state -- under mains voltage Specification [1] experimental unit from the GUNT practical series for the training of mechatronics engineers for refrigeration [2] simulation of the electrical circuit of a simple air conditioning system for cooling [3] real control circuits with electrical components, simulated load circuits [4] electrical simulation of compressor and fan [5] temperature control with thermostat and compressor [6] fan with 2 adjustable speeds [7] operating states of the simulated components indicated via lamps in the circuit diagram [8] circuit diagram depicted on the front panel [9] identification of 15 faults: multimeter measures voltages or resistances at the lab jacks Technical data Simulated compressor - start-up current: >3A Electrical components for the compressor - start-up capacitor - start-up relay - overheat protection (bimetallic) Electrical components for the fan - on/off switch - speed switch Thermostat: -5...35°C General safety devices - main contactor - automatic fuse 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 900x400x650mm Weight: approx. 30kg