Course: HET 119 HVACR Electricity II

Lab Assignment

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Week 7 Lab Assignment: Electric Motors

Recommended Materials
1. Lab Sheet
2. Pencil and paper
3. HVAC Textbook
4. Internet Search

Scope

This lab will help the student to learn how to recognize motors and their purposes used in the HVAC/R field.

Procedures

1. Use a textbook and the internet to search for electrical higher efficiency Split Phase and Three Phase Motor use in the HVAC/R field.
2. The Motors you need to locate and list out their components:
  1. Capacitor Start Motors
  2. Capacitor Start-Capacitor Run Motors
  3. Three Phase Motors (3Ø)
  4. Have your instructor to give you these three different types of motors.
  5. Your instructor will demonstrate to you how to disassemble these motors.
  6. List all the data from the name plate.
  7. Take one motor at a time apart and inspect the internal and external components and parts and record the names of these components.
  8. Reassemble the motor and have the instructor inspect your job.
  9. Wire the motors one at a time to a power source; have your instructor inspect the wiring.
  10. Start the motor and record the amperage, and voltage.

Research Questions

1. What are the differences in these motors?
2. Which one of these motors are the least efficient?
3. From the data plate, what is the definition of each of these terms?
4. How many poles do three phase motors have?
5. How can you determine the RPMs of a Motor?
6. What type of relay the Capacitor Start motors have?
7. What type of relay does the CSCR motor have?
8. How many capacitors does a CSCR motor have?

Click on the file below to download the Lab Assignment
- HET 119 Wk 7 Lab.docx (15.62 KB)