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Products  |  Thermodynamics, Heating and Sanitary Systems  |  Refrigeration and Air Conditioning  |  ET 174
ET 174 Industrial Air Conditioning Controls Show data sheet (pdf file) Print page
Technical Description
The ET 174 was designed for investigations, simulations, and fault finding on standard electrical components commonly used in air conditioning and refrigeration equipment. The benchtop unit demonstrates the electrical circuit for an air conditioning system with summer and winter mode. Compressor, fan and heater are simulated. All other electrical components are industry standard components. The circuit diagram for the system is printed on the front panel. Laboratory sockets enable measuring instruments to be connected for fault finding. Up to 30 faults can be triggered by the lecturer so that the students can learn to systematically find and fix faults.
Learning Objectives / Experiments
- Familiarisation with electrical components for
  refrigeration engineering and air conditioning and
  their function
- Circuit diagrams and electrical circuits
- Simulation of up to 30 faults
Features
* Fault finding and fixing
* Simulation of 30 electrical faults
* Industrial components
Alternative products
ET 144 -- Refrigeration Wiring Skills Trainer
ET 170 -- Domestic Air Conditioning Controls
ET 171 -- Compressor Controls Trainer
ET 172 -- Refrigerant Compressor Fault Simulator
ET 340 -- HVAC Simulator
ET 930 -- Trainer Refrigeration Control
Specification
[1] Demonstration panel on function and fault fixing in electrical components used in air conditioning
[2] 2 operating modes: summer and winter
[3] Simulation of compressor, fans, heater; signal lamps indicate operating state
[4] Electric starting devices, electric motor protection and safety devices
[5] Front panel with circuit diagram and laboratory sockets
[6] 30 fault switches
[7] Industrial components
[8] l x w x h: 1000x400x850mm, 30kg
[9] 230V, 50/60Hz, 1 ph. o. 120V, 60Hz, 1 ph.
Technical Data
Frost protection switch: -10...12°C
Thermostat, 2 change-over stages: 1...60°C, differential between stages: 1...4°C, differential each switch: 2°C
Hygrostat: operating range 35...95% rel. humidity
Defrosting timer: switching time 10...60min
Pressure switches: HP 8...28bar,
LP -0.2...7.5bar, differential: HP 4...10bar,
LP 0.7...4bar
Dimensions and Weight
l x w x h : 1000 x 400 x 850 mm
Weight : approx. 30 kg
Connections
230V, 50/60Hz, 1 ph. o. 120V, 60Hz, 1 ph.
Scope of Delivery
1 experimental unit, 1 instruction manual
Order Details
061.17400 ET 174 Industrial Air Conditioning Controls
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© 2005 G.U.N.T. Gerätebau GmbH