Maintenance : Meaning, Types and Importance

 

Subject : 

Basic Science and Technology

Term :

Second Term

Week:

Week 10

Class :

Primary 6 /  Basic 6

 

Previous lesson : 

The pupils have previous knowledge of

Woodwork Hand tools

in Basic Science in their previous lesson

Topic : 

Maintenance

Definition of Maintenance

– Types of Maintenance

– Importance of Maintenance

 

Behavioural objectives :

At the end of the lesson, the pupils should be able to

• define maintenance
• say the reasons for caring out maintenance
• mention types of maintenance

Instructional Materials :

• Wall charts
• Pictures
• Related Online Video
• Flash Cards

Methods of Teaching :

• Class Discussion
• Group Discussion
• Asking Questions
• Explanation
• Role Modelling
• Role Delegation

 

Reference Materials :

• Scheme of Work
• Online Information
• Textbooks
• Workbooks
• 9 Year Basic Education Curriculum
• Workbook

            

CONTENT

What is maintenance ?

Maintenance is any mental or mechanical activities that is carried out in order to sustain the good working condition of any objects , machine or human for that they will be in good working condition for a very long time.

Machine maintenance is also the process of keeping a machine in good working order by regularly inspecting, cleaning, and repairing it as needed. The goal of machine maintenance is to extend the life of the machine, improve its performance, and reduce the risk of breakdowns. There are two main types of machine maintenance: preventive maintenance and corrective maintenance.

 

What are the reasons for maintenance ?

• To keep the machine in good working condition for a very long period of time
• To increase the working life span of the object or machine and save money on costs of replacement or repair
• To avoid unnecessary wasteful spending on repairs that are not always efficient and effective as the new ones
• To reduce , prevent or eliminate the possibility or the occurrence of accidents

Types of maintenance 

1. Predictive Maintenance : This type of maintenance is easily foretold and expected in order to keep the machine in optimal performance . Examples of such predictive maintenance is the regular change change of engine oil of a motor cycle or motor bike at least once in every fourteen days or proper tyre gauge of a motor vehicle. It is a type of maintenance strategy that uses data and analytics to predict when a machine is likely to experience a problem or fail. The goal of predictive maintenance is to identify potential issues before they occur, so that maintenance can be performed before the machine breaks down. This can help to reduce the risk of downtime and improve the overall reliability of the machine.
2. Preventive Maintenance : Preventive maintenance is necessitated by the need to prevent the vehicle of machine from total collapses or breakdown . This is easily noticed when the vehicle starts making funny strange sounds . it is better that the vehicle is taken to the mechanic workshop to prevent breakdown of the machine. It also involves performing regular inspections and maintenance tasks on a machine to prevent problems from occurring. This can include tasks like lubricating parts, replacing worn components, and cleaning the machine. Preventive maintenance is typically scheduled on a regular basis, such as daily, weekly, or monthly.
3. Corrective Maintenance : This type of maintenance is always carried out when the deed had already been done . It is most undesirable because the machine is already down and this may affect productive use of time . The machine is already down , we just want to salvage or save what is left . Prevention is better than cure . It involves fixing a problem that has already occurred. This can include tasks like repairing a broken part or replacing a faulty component. Corrective maintenance is typically performed on an as-needed basis, when a problem is detected.

 

Presentation

 

The topic is presented step by step

 

Step 1:

The class teacher revises the previous topics

 

Step 2.

He introduces the new topic

 

Step 3:

The class teacher allows the pupils to give their own examples and he corrects them when the needs arise

 

 

Conclusion

The class teacher wraps up or conclude the lesson by giving out short note to summarize the topic that he or she has just taught.

The class teacher also goes round to make sure that the notes are well copied or well written by the pupils.

He or she does the necessary corrections when and where  the needs arise.

 

Evaluation

 

• What is maintenance
• What is corrective  maintenance .
• What is preventive  maintenance
• What is predictive  maintenance
• define measuring tools
• give four examples of measuring tools
• Mention four reasons for maintenance
• give four examples of cutting tools

 

 

Assignment

Prepare for the next lesson by reading about revision

1. What is the main goal of machine maintenance? a) To improve the machine’s performance b) To extend the machine’s lifespan c) To reduce the risk of accidents d) All of the above e) None of the above
2. Which of the following is NOT a type of machine maintenance? a) Preventive maintenance b) Corrective maintenance c) Predictive maintenance d) Reactive maintenance e) None of the above
3. Which of the following is NOT a benefit of machine maintenance? a) Improved efficiency b) Increased downtime c) Reduced risk of accidents d) Extended machine lifespan e) None of the above
4. What is the purpose of preventive maintenance? a) To fix problems that have already occurred b) To improve the machine’s performance c) To prevent problems from occurring d) To reduce the risk of accidents e) None of the above
5. What is the purpose of corrective maintenance? a) To fix problems that have already occurred b) To improve the machine’s performance c) To prevent problems from occurring d) To reduce the risk of accidents e) None of the above
6. What is the main benefit of predictive maintenance? a) Improved efficiency b) Reduced downtime c) Extended machine lifespan d) All of the above e) None of the above
7. Which of the following techniques is NOT commonly used for predictive maintenance? a) Vibration analysis b) Temperature monitoring c) Oil analysis d) Pressure monitoring e) None of the above
8. How is predictive maintenance typically carried out? a) Using specialized equipment and software that can analyze data from the machine in real-time b) By performing maintenance tasks at regular intervals, regardless of the machine’s condition c) By waiting for the machine to break down and then fixing it d) By inspecting the machine visually and manually e) None of the above
9. How can machine maintenance save companies money? a) By improving the machine’s efficiency b) By reducing the risk of accidents c) By avoiding costly repairs and downtime d) All of the above e) None of the above
10. Which of the following is NOT a benefit of machine maintenance? a) Improved machine performance b) Extended machine lifespan c) Reduced risk of accidents d) Increased downtime e) None of the above

 

 

Suggested answers to the questions on the topic 

1. d) All of the above
2. d) Reactive maintenance
3. b) Increased downtime
4. c) To prevent problems from occurring
5. a) To fix problems that have already occurred
6. d) All of the above
7. d) Pressure monitoring
8. a) Using specialized equipment and software that can analyze data from the machine in real-time
9. d) All of the above
10. d) Increased downtime