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Course/Program Inventory

IMR 4160 - Electric Motors


Clock Hours: 45

Delivery Mode
on-ground

Course Description:
Students learn the various types of Motors used in HVAC/R systems and their construction. Students will explore the electrical and mechanical conditions that motors operate and the efficiency of different types of electrical motors. Students will learn troubleshooting techniques to identify problems with electrical motors in relation to their identification plate and readings from instruments. Students will learn to follow electrical wiring diagrams for proper identification of components used in HVAC/R applications.

Student Learning Outcomes:
Students will attain the necessary skills to be able to:

  1. Explain the various uses of motors
  2. Describe the parts of an electric motor
  3. Explain the relationship between electric motors and magnetism
  4. Determine a motor’s speed
  5. Describe the purpose of the start winding
  6. Explain the starting and running characteristics of an electric motor
  7. Describe common methods of power distribution
  8. Describe a single phase open motor
  9. Describe a “split phase motor”
  10. Explain the operation of a centrifugal switch
  11. Describe the operation of an electronic relay
  12. Describe a capacitor start motor
  13. Discuss a capacitor start-capacitor run motor
  14. Describe a Permanent Split Capacitor (PSC) motor
  15. Describe the operation of a shaded pole motor
  16. Explain the operation and construction of three phase hermetic motors
  17. Explain the operation and construction of single phase hermetic motors
  18. Explain the operation of a potential relay
  19. Explain the operation of a current relay
  20. Explain the operation of a PTC start device (positive temperature coefficient)
  21. Explain the operation of a two speed compressor motor
  22. Describe special application motors 
  23. Describe three phase compressor motors
  24. Describe a variable speed motor
  25. Discuss the advantages of using ECM (electronically commutated motor
  26. Explain DC converters
  27. Describe inverters
  28. Explain the operation of ECM (electronically commutated) motors
  29. Describe the methods for cooling electric motors
  30. Identify various electric motors
  31. Describe the application of various motors
  32. Sketch a diagram showing how they are wired in a circuit
  33. Identify the proper terminals for; start, run and common in a single phase hermetic compressor