Compressors Cutaways Trainer
(AR-015)

1 Operation switches. 2 Electrical refrigeration components. 3 Pressure switches. 4 Pressure gauges. 5 Valves. 6 Compressor. 7 Schematic diagrams of refrigeration compressor types. 8 Schematic diagrams of refrigeration compressor electrical connections. 9 Open reciprocating compressor cutaway. 10 Sealed reciprocating compressor cutaway. 11 Rotary compressor cutaway. 12 Scroll compressor cutaway.

  • Investigate the operation of different types of compressors
    • Scroll compressor
    • Sealed reciprocating compressor
    • Opened reciprocating compressor
    • Rotary vane compressor
  • Investigate the effect of flow restriction on compressor performance and electrical power.
  • Investigate all the electrical components necessary to protect the compressors.
  • Investigate the electrical connections of the compressor.
  • Practice connecting compressor terminals with different circuit components.
  • Practice measuring the electrical drawn current in the compressor.
  • Investigating the effect of increasing and decreasing pressure on the compressor operation.
  • Reciprocating compressor
    • Frequency: 50Hz
    • Voltage: 220V
    • Power: 1/3 HP
  • High pressure switch
    • Regulating Range: 8.00 - 32.00 bar
    • Differential Range: 1.80 - 6.00 bar
    • Max. Working Pressure: 35.0 bar
    • Ambient temperature: -40 ~ 65 °C
  • Low pressure switch
    • Regulating Range: -0,20 to 7,50 bar
    • Differential Range: 0,70 – 4,00 bar
    • Max. Working Pressure: 17 bar
    • Ambient temp. range: -25 ~ 65 °C
  • Thermostat
    • Temperature range: -5~ 35 °C
    • Sensor type: Room sensor
    • Ambient temperature: -40 ~ 65 °C
    • Max. sensor temperature: 120 °C
  • Start capacitor
    • Voltage of capacitor B: 220 V
    • Frequency: 50 Hz
  • 4-poles circuit breaker
    • Number of protected poles: 4
    • [In] rated current: 16 A
  • 2-poles circuit breaker
    • Number of protected poles: 2
    • [In] rated current: 16 A at 25 °C
  • Rotary compressor cutaway
    • Power: 1.5 HP (one cam).
  • Scroll compressor cutaway
    • Power: 3 Hp
  • Open reciprocating compressor cutaway
    • 1/3 hp
  • Sealed reciprocating compressor
    • cutaway.
  • Vehicle Air Conditioning Compressor
    • 5 piston
  • Comprehensive Flywheel Apparatus (AR - 015)
  • Hard Copy user manual

The compressors’ cutaways trainer is an educational unit designed to demonstrate and investigate the operation of various types of most common compressors used in refrigeration systems and study the compressor electrical circuit in refrigeration system. The unit includes cutaways of four different types of compressors, electrical components to connect the electrical circuit of the refrigeration compressor, an operation panel and four storing cabinet to store the compressors cutaways.

                                     
  • The educational unit is designed to allow trainees to closely observe four types of refrigeration compressors by investigating their internal structure and how their components interact with each other to generate compression action of refrigerant.
  • The educational trainer consists a vertical operation panel, a horizontal benchtop and four storing cabinet to store the compressor cutaways.
  • The cutaways are a scroll compressor, sealed reciprocating compressor, opened reciprocating compressor and rotary vane compressor.
  • Each cutaway is fixed to a sturdy plate to facilitate carrying it.
  • Each storage cabinet is supplied with a ball bearing slide plate that carries the cutaway to ease getting out the cutaway from storage cabinet.
  • The operation panel includes trainer ON/ OFF switch, emergency switch, 4-pole circuit breaker and electric motor ON/OFF switch.
  • The operation panel also includes schematic diagrams of the compressor electrical connections and compressor cutaways.
  • The operation panel is supplied with electrical and refrigeration components like thermostat, start-up capacitor, startup relay, low pressure gauge, low pressure control, high pressure control, high pressure gauge, inlet valve, outlet valve and 2-pole circuit breaker
  • The electrical components at the operation panel are internally connected to safety 4-mm safety terminals in addition to electrical terminals of the compressor three phases in order to allow trainees to construct the electrical circuit of the compressor by applying the schematic diagram provided at the operation panel.
  • The refrigeration components are connected by copper tubes and painted with electrostatically red and blue paints to indicate the high and low temperature paths of the refrigeration cycle.
  • An electric motor is mounted at the lower side of the horizontal benchtop in order to mount the compressors cutaways to the motor shaft that gets out the bench top to run the compressors to allow trainees investigating the interaction between the compressor components.
  • The electric motor is set to rotate at low speed for safe and precise study.
  • The benchtop is provided with a guide near to the motor shaft in order to facilitate mounting the compressors cutaways to the motor shaft.
  • These cutaways are prepared such that the cutaway doesn’t affect the mechanical motion of the compressor when it is mounted to the motor shaft.
  • A reciprocating compressor is installed on the benchtop which isn’t a cutaway and used to pressurize the system and investigate the role of compressors in refrigeration cycles and how they affect the other components of the refrigeration cycle.
  • The pressure is measured at the suction and delivery sides of the compressor.
  • The trainer also allows trainees to study how to use protection components to protect the compressor from high and low pressure using the pressure switches and high loads by the thermostat and to provide the electrical protection by the circuit braker.
  • The educational unit also contains flow control valves which are used to restrict flow and so investigate the effect of restricting the flow on compressor performance.
  • Air is used as refrigerant to simulate a full refrigeration cycle with refrigeration components.