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Chapter 8

Compressors, Clutches, and Drives. Chapter 8. l. Objectives. Explain the purpose of a refrigeration compressor. Identify the major parts of radial and axial piston compressors. Explain the operation of radial and axial piston compressors. ll. Objectives.

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Chapter 8

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  1. Compressors, Clutches, and Drives Chapter 8

  2. l. Objectives • Explain the purpose of a refrigeration compressor. • Identify the major parts of radial and axial piston compressors. • Explain the operation of radial and axial piston compressors.

  3. ll. Objectives • Identify the major parts and explain the operation of rotary vane compressors. • Identify the major parts and explain the operation of scroll compressors. • Explain the operation of a capacity control valve.

  4. lll. Objectives • Explain how the engine drives the compressor. • Explain the purpose of a compressor clutch. • Identify the major parts of a compressor clutch. • Explain the operation of a compressor clutch.

  5. Compressor Purpose • To raise the pressure and temperature of the refrigerant

  6. Basic Compressor Parts

  7. Body Ears Endplate Crankshaft Crankcase Lip seal Compressor Parts

  8. Compressor Body • The mounting place for other compressor parts • Holds refrigerant and lubricating oil • Made of aluminum on newer vehicles

  9. Compressor Ears • Built-in mounting points for attaching compressor to engine Ears

  10. Endplate • Attached to the compressor body • Low and high side hose connections installed on the body or endplate

  11. Crankshaft and Crankcase • Crankshaft rides on bearings in the compressor body • Crankcase holds the crankshaft

  12. Crankshaft and Crankcase Illustration

  13. Compressor Parts • Crankshaft drive end extends from the body • Pulley and clutch assembly installed on the crankshaft drive end

  14. Lip Seal • Always installed where crankshaft drive end extends from compressor body

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