Electrical connection of refrigerant compressors
Use of a real refrigerant compressor
Features

• correct electrical connection of a refrigerant compressor
• use of a real refrigerant compressor
• design and investigation of a safety chain

Specification

• experimental unit from the practical series for the training of mechatronics engineers for refrigeration
• correct electrical connection of a refrigerant compressor
• refrigerant circuit with compressor, receiver, 2 valves and 2  manometers to investigate pressure switches on the delivery and intake sides
• electrical components for the start and operation of the compressor mounted clearly visible
• lab jacks and cables to connect the electrical components
• operation of a thermostat
• circuit diagram on the front panel for easy identification of the components
• refrigerant R513A, GWP: 631

Technical data
Refrigerant compressor

• power consumption: approx. 193W at 5/55°C
• refrigeration capacity: 374W at 5/55°C

Receiver: 0,8L
Manometer measuring ranges

• delivery side: -1...24bar
• intake side: -1...9bar

Pressure switch control range

• delivery side: 8...32bar
• intake side: -0,9...7bar

Thermostat: -5...35°C
Electrical components for the compressor

• start-up capacitor
• start-up relay
• overheat protection (bimetallic)
• automatic fuse

Refrigerant

• R513A
• GWP: 631
• filling volume: 300g
• CO2-equivalent: 0,2t , 230V, 50Hz, 1 phase

Electrical faults in refrigerant compressors nvestigation of important electrical components from refrigeration
Features

• real refrigerant compressor from practice
• investigation of important electrical components from refrigeration
• simulation of 15 faults
• Learning objectives/experiments
• electrical connection of refrigerant compressors
• read and understand electrical circuit diagrams
• design and operation of the electrical components of a refrigerant compressor
• o start-up capacitor
• o start-up relay
• o operating capacitor
• o overheat protection
• o main contactor
• o automatic fuse
• fault finding in electrical components
• o in idle state
• o under mains voltage

Specification

• experimental unit from the practical series for the training of mechatronics engineers for refrigeration
• investigation of the electrical components for the operation of a refrigerant compressor
• real refrigerant compressor from practice
• electrical components for the start and operation of the compressor arranged in the transparent switch cabinet
• general safety devices mounted clearly visible
• circuit diagram depicted on the front panel
• identification of 15 faults: multimeter measures voltages or resistances at the lab jacks
• refrigerant R449A, GWP: 1397

Technical data
Refrigerant compressor

• power consumption: approx. 870W Electrical components for the compressor
• start-up capacitor
• start-up relay
• operating capacitor
• overheat protection (bimetallic)

General safety devices

• main contactor
• automatic fuse

Refrigerant

• R449A
• GWP: 1397
• filling volume: 80g
• CO2-equivalent: 0,1t , 230V, 50Hz, 1 phase