Basic Electricity - Senior Secondary 2 - Maintenance and repair of various electrical appliance

Maintenance and repair of various electrical appliance

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TERM: 3RD TERM

WEEK NINE

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC ELECTRICITY

Topic: MAINTENANCE AND REPAIR OF VARIOUS ELECTRICAL APPLIANCES

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Define maintenance

II.) Identify the types of maintenance

III.) State the advantages of maintenance

IV.) State the disadvantages of maintenance

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher explains the meaning of maintenance and discuss the 3 types.

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher explains the advantages and disadvantages of maintenance

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

MAINTENANCE AND REPAIR OF VARIOUS ELECTRICAL APPLIANCES

Maintenance refers to the upkeep and care of electrical systems and equipment to ensure their proper functioning and safety. There are generally three types of maintenance:

  1. Preventive Maintenance: This involves routine inspections, testing, cleaning, and servicing of electrical components to prevent potential breakdowns or failures. It aims to identify and address issues before they escalate into major problems.
  2. Predictive Maintenance: This utilizes data and analytics to predict when maintenance should be performed based on the condition of the equipment. Techniques such as infrared thermography, vibration analysis, and oil analysis are used to detect early signs of deterioration or malfunction.
  3. Corrective Maintenance: Also known as reactive maintenance, this involves repairing electrical equipment or systems after they have failed or malfunctioned. While not ideal, corrective maintenance is necessary for addressing unexpected breakdowns and restoring functionality.

Advantages of maintenance

  1. Regular maintenance helps identify and address issues before they lead to equipment failure, resulting in improved reliability and uptime.
  2. Proper maintenance can prolong the lifespan of electrical equipment by preventing premature wear and tear.
  3. Maintenance ensures that electrical systems are in good working condition, reducing the risk of accidents, injuries, and electrical fires.
  4. Investing in maintenance can lead to cost savings in the long run by avoiding expensive repairs, downtime, and replacement of equipment.
  5. Well-maintained equipment operates more efficiently, leading to lower energy consumption and reduced operating costs.

Disadvantages of maintenance

  1. Maintenance activities require resources such as labor, equipment, and materials, which can be costly. Additionally, scheduled maintenance may disrupt normal operations, leading to downtime and productivity losses.
  2. Effective maintenance often requires skilled technicians with specialized knowledge and training, which can be challenging to find and retain.
  3. Over-maintenance, or performing unnecessary maintenance tasks, can waste resources and increase operational costs without providing significant benefits.
  4. Maintenance activities carried out by human operators may be prone to errors or oversights, leading to inadequate maintenance or even equipment damage.

EVALUATION: 1. Define maintenance

  1. State and explain the three types of maintenance
  2. Mention 3 advantages and 2 disadvantages of maintenance

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively