waecE-LEARNING
Carpentry and Joinery 2, May/June 2014  
Questions: 1 2 3 4   Main
General Comments
Weakness/Remedies
Strength













































Question 8

 

  1. Define the term machine maintenance.
  1. State four reasons why machine maintenance is important.

 

  1. Explain the following terms:
  2. corrective maintenance;
  3. predictive maintenance.

 

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Observation

Candidates were able to:

-           define machine maintenance;
-           explain the given maintenance terminologies.
However, they were unable to state the reasons why machine maintenance is important.
The expected response to question 8 is as given below:

(a)       Machine maintenance: is any action performed on a machine to keep it
in good working condition.

                        (b)       Reasons for machine maintenance
                                    to
                                   

  1. prolong the life-span of the machine;
  2. keep the machine in good working order;
  3. ensure efficiency of the machine;
  4. prevent accident in the workplace during use;
  5. give a good output;
  6. avoid breakdown of machine;
  7. reduce wastages;
  8. reduce overhead cost;
  9. ensure effectiveness.

(c)        Corrective maintenance
           
(i)         Is the type of maintenance carried out when a machine has
                        already broken down.

 

                        It involves the following actions:
                        -           identification of the problem;
                        -           isolation of the problem;
                        -           rectification of the problem.

            (ii)        Predictive maintenance

Is a type of maintenance performed at intervals to monitor the condition of a machine in order to avoid sudden breakdown of the machine.

It involves the following actions:
-           routine inspection;
-           routine services;

-           routine repairs

 

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