ASR2016 Electrical Faults in Full Air Conditioning Systems Vocational Training Equipment Refrigeration Laboratory Equipment
Learning Objectives / Experiments
– electrical design and operation of full conditioning
systems
– reading and understanding electrical circuit
diagrams
– design and operation of electrical components in
an air conditioning system
* start-up capacitor
* start-up relay
* operating capacitor
* overheat protection
* Heinemann circuit breaker
* solenoid valve
* defrost timer
* float switch
* thermostat
* hygrostat
* frost protection monitor
– fault finding in electrical components
* in idle state
* under mains voltage
Specification
[1] experimental unit from the practical series for the training of mechatronics engineers for refrigeration
[2] simulation of the electrical circuit of a complex conditioning system with humidifier and heat pump function for heating, cooling and humidifying
[3] real control circuits with electrical components, simulated load circuits
[4] electrical simulation of compressor, 2 fans (room air, outer air), 4-way reversing valve, auxiliary heating
[5] humidifier with hygrostat, solenoid valve and float switch (pump simulated)
[6] hot gas defrosting by switching the 4-way reversing valve
[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 30 faults: multimeter measures voltages or resistances at the lab jacks
Technical Data
Thermostat to switch between heating/cooling
– measuring range: 1…60°C
Electrical compressor components
– start-up relay
– start-up capacitor
– operating capacitor
– overheat protection
– 2 pressure switches
Electrical components of room air fan
– start-up capacitor
– Heinemann circuit breaker
Humidifier components
– hygrostat: measuring range 30…100% r.h.
– float switch
– solenoid valve
– Heinemann circuit breaker
Defrosting components
– frost protection monitor: -10…12°C
– timer: switching time 10…60min
Circuit breaker for auxiliary heating
Dimensions and Weight
LxWxH: 1050x400x860mm
Weight: approx. 48kg
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz, 1 phase
