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VEM-105 Basic Electricity for A/C and Refrigerator Mechanics

Course Description:  This course introduces the student to the theory of electricity, basic components used in the electrical industry and the relationship of voltage, current, resistance and power. This course will also enable the student to perform basic measurements by using an electrical measuring device and analyzing electrical circuits.  Student will connect different types of electrical circuits.  The course emphasizes on testing electrical components of refrigeration and air conditioning system.  It also includes the theoretical and practical practices of rewiring and troubleshooting domestic refrigeration and air conditioning systems.

  • This course also meets PLO #(s) 10 of AAS degree in Building Technology major- Construction Electricity program.

A.  PROGRAM LEARNING OUTCOMES (PLOs): 
 The student will be able to:

  1. Identify safety and occupational health requirements in the air conditioning and refrigeration   industry.
  2. Use specified hand and power tools for refrigeration and air conditioning.
  3. Perform basic hand skills in maintaining refrigeration and air conditioning system to a given specifications.
  4. Read and interpret basic electrical drawing and symbols related to A/C and refrigeration systems.
  5. Perform basic troubleshooting and repair to residential A/C units and refrigerators.
  6. Participate in the air conditioning and refrigeration profession.

B.  STUDENT LEARNING OUTCOMES (SLOs) - GENERAL: 
The student will be able to:

  1. Discuss fundamentals of electricity.
  2. Manipulate electrical measuring instruments.
  3. Determine the electrical components of domestic refrigeration system.
  4. Analyze electrical diagram of domestic refrigeration and air conditioning unit.
  5. Troubleshoot electrical defects of domestic refrigeration and air conditioning system.
  6. Repair electrical defects of a domestic refrigeration and air conditioning system.

SLO

PLO 1

PLO 2

PLO 3

PLO 4

PLO 5

PLO 6

1

 

I

I, I

I, D

D

M

2

M

 

D

I

D

M

3

M

 

 

I

D

M

4

I

 

D

M

D

D

5

M

 

I

D

M

D

6

M

 

D

M

D

M

I = Introduced
D = Demonstrated
M = Mastered

C.  STUDENT LEARNING OUTCOMES (SLOs)-SPECIFIC: 
The student will be able to: 

General SLO 1.  Discuss fundamentals of electricity.


Student Learning Outcome

Assessment Strategies

1.1. Differentiate electricity from electronics

Short answer questions
Multiple choice questions
Practical task,

Experiments

1.2. Define voltage, current and resistance

1.3. Enumerate the six methods of producing electricity

1.4. Determine the components of an electrical circuit

1.5. Recognize the electrical symbols and types of circuits.

1.6. Analyze electrical circuits.

1.7. Identify electrical materials.

 General SLO 2.  Manipulate electrical measuring instruments.


Student Learning Outcome

Assessment Strategies

2.1. Identify the parts and function of multi-meter and clamp on meter

Short answer questions
Multiple choice questions
Practical task
Experiments

2.2. Determine the steps and measuring voltage, current and resistance

2.3. Demonstrate actual measurement of voltage, current and resistance

2.4. Perform preventive maintenance of multi meter and clamp on meter

2.5. Follow safety in handling electrical measuring instruments.

General SLO 3.  Determine the electrical components of domestic refrigeration system.


Student Learning Outcome

Assessment Strategies

3.1. Identify the types of compressor motors.

Short answer questions
Multiple choice questions
Practical task
Experiments

3.2. Recognize the kinds and parts of fan motors

3.3. Discuss the function of heaters, timers, starting relays, 
overload protector, thermostat and transformer, etc.
3.4. Follow personal and equipment safety in checking electrical components.

General SLO 4.  Analyze electrical diagram of domestic refrigeration and air conditioning unit.


Student Learning Outcome

Assessment Strategies
4.1. Draw the wiring diagram of manual defrost refrigerator, drinking fountain and freezer

Short answer questions
Multiple choice questions
Practical task
Experiments
4.2. Interpret the diagram of an automatic defrost refrigerator
4.3. Analyze the schematic wiring diagrams of  window type room air conditioner
4.4. Connect the electrical wirings of domestic refrigeration and air conditioning units by following their schematic diagrams
4.5. Observe personal and equipment safety in testing electrical circuits.

General SLO 5.  Troubleshoot electrical defects of domestic refrigeration and air conditioning system.


Student Learning Outcome

Assessment Strategies
5.1. Introduce  trouble shooting guide

Short answer questions
Multiple choice questions

Practical task
5.2. Diagnose the unit with the use of electrical measuring instrument
5.3. Analyze  troubles with the aid of unit schematic diagram
5.4. Determine troubles and countermeasures
5.5. Demonstrate safety in testing air conditioning wiring circuit.

General SLO 6.  Repair electrical defects of a domestic refrigeration and air conditioning system.


Student Learning Outcome

Assessment Strategies
6.1. Evaluate system operating condition

Short answer questions
Multiple choice questions
Practical task
6.2. Replace defective compressor/fan motors.
6.3. Testing of electrical components
6.4. Replace defective electrical components
6.5. Follow safety precautions in replacing electrical components.

D.  COURSE CONTENT
This course contains:

  1. Electrical Fundamentals
  2. Multi-meter and Clamp-on meter
  3. Electrical components of refrigeration and air conditioning unit
  4. Electrical Circuits
  5. Troubleshoot electrical defects
  6. Electrical defects of a system
  7. Personal and equipment safety measures

E.  METHODS OF INSTRUCTION

  1. Computer Aided Instruction
  2. Practical/Experimentation
  3. Lecture/Demonstration

F.  REQURIED TEXT(S) AND COURSE MATERIALS
Althouse, A., Turnquist, C., & Bracciano, A. (2004). Modern Refrigeration and Air Conditioning. 18th Edition. Tinley Park, IL: The Goodheart-Wilcox Co., Inc. (or most recent edition)
Required Course Materials:

    1. CAI classroom with whiteboard
    2. Laboratory workshop, equipment and  tools of the trade
    3. Text, Teacher’s Resource Guide, workbook
    4. Multi-media projector

G.  REFERENCE MATERIALS
National Center for Construction Education and Research, Heating Ventilating and Air Conditioning. Upper Saddle River, New Jersey Columbus, Ohio, USA. Prentice Hall, 2001 (or most recent edition).
Scaringe, R. P. Environmentally Safe Refrigerant Service Techniques for the Next Generation. Mainstream Engineering Corporation, Rockledge, Florida, USA. 12th Edition, 2004 (or most recent edition).
Air Conditioning Hand Out

H.  INSTRUCTIONAL COSTS
None

I.   EVALUATION
The student must achieve a grade of C to pass the course.

J.   CREDIT BY EXAMINATION
None

 

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