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UNIT 1.1General Objectives :Understand the maintenance systemSpecific Objectives :After learned this unit, you should be able to :-

Describe the definition & objective of maintenance

Describe the preventive & reduce failure

Explain the minimum cost of maintenance

Explain the life period of a machine

Exercise

Assignment (E4101)

Assignment (E4120)

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From the aspect term & language:

i. Technical Dictionaries – Combination between all technical process and all matters that connect to the maintenance system movement (equipment @ machine) which the purpose is to make the equipment in the system function according to the plan.

ii. Radio Shark Dictionary Of Electronics – Observe & check; to detect & prevent all wrong process or miss operation in an electronic equipment.

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MAINTENANCE

Definition

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Update equipment system or machine. Reduce the risk of failure for equipment. Enhance the quality and maximize the equipment value. Increase the level of strength and toughness of the

equipment. Easier to identify the damage & the reason contribute to

the problem. Can produce and estimate the minimum cost of the

equipment. Can expect the machine’s life period.

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Objectives

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Exercise

Discuss with you friend, what are the example of maintenance activity.

(20 minutes)

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Electric & electronic system – unpredictable lifetime.

Sometimes the equipment might having a failure before

it’s time. Periodical Maintenance is required to make sure the

instruments are not easy damaged, working safely & outlast. Periodical maintenance usually implement by doing

examination in daily, weekly, monthly or annually by using suitable criteria.

This can help to detect possibility that will happen to equipment @ system by doing analysis to the examination result.

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To Prevent & Reduce Failure

MAINTENANCE

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Maintenance should be planned properly. Made before a system or equipment is produce/ operate. Example :- Maintenance Planning

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To Minimize Maintenance Cost

Maintenance

List of maintenance plan Without maintenance plan

Preventive maintenance plan

Senggaraan pembaikan

(kecemasan)

Senggaraan pembaikan

(kecemasan)

Maintenance schedule

Syarat dan dasar senggaraan

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Maintenance Planning- Is the place where all the maintenance process

arrangement were made. And also, in this period all information is produce & future plan is prepared.

Without Maintenance Planning- No maintenance plan determination to an equipment

maintenance.

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MAINTENANCE

To Minimize Maintenance Cost

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Preventive Maintenance- The purpose of this maintenance is to determine the

condition of an equipment by referring the observation data @ by using a criteria that has been prepared in order to reduce failure in the system that is plan to be made.

Repair Maintenance- Maintenance that is made after a failure happened to the

equipment that is maintain & also to keep the item where the maintenance can made the equipment operate according to the function that is needed.

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MAINTENANCE

To Minimize Maintenance Cost

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Emergency Maintenance

– This maintenance is needed to repair a machine immediately to avoid serious effect to the machine. Normally this maintenance need a long period of maintenance; more than one day. This failure are affected by the environment effect.

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MAINTENANCE

To Minimize Maintenance Cost

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Term & Regulation– Maintenance that are more to preventive actio where it’s

start with the discussion result. This is followed by the term & regulation which all the result item should be done routinely @ by using a process that connected to the monitoring system.

Maintenance schedule– Complete schedule system that contain with the

maintenance schedule, preventive activity that are cover with date, time, operation number & etc.

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To Minimize Maintenance Cost

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Diagram 1.1 show the relationship between cost & time for plan & w/out plan maintenance.

Diagram 1.2 explain about the Total Coat of “breakdown” that relate to the cost flow, where the total maintenance cost are relate to the operation service cost and cleaning.

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MAINTENANCE

To Minimize Maintenance Cost

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Without Plan Maintenance

Planned maintenance

Cost (RM)

Time (year)

Diagram 1.1 : Relationship between the minimum cost of plan maintenance & without plan maintenance

MAINTENANCE

To Minimize Maintenance Cost

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Consumer cost

Total Cost

(Maintenance Period)

Kos Permulaan

Land Cost

Construction Cost

Professional Fee

Cost Flow Exchange

Penempatan

Maintenance Service Operation (Operasi dan Pembersihan)

Rates

Insurance

Diagram 1.2 : Breakdown of total cost

MAINTENANCE

To Minimize Maintenance Cost

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The life period of a machine is unpredictable, depend to the environmental factors.

Periodic maintenance (schedule) is required to make sure the machine life time.

It’s also depend to the machine utilization.

Improper maintenance would create impurity stick on the machine / equipment that will shorten the machine life time.

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To Ensure the Life Period of a Machine

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Exercises

1. Explain the definition of maintenance.

2. Describe the objective of maintenance.

3. Refer to the 1.1 diagram, explain the graph.

4. What is the meaning of prevent to reduce failure in

maintenance.

5. Explain briefly how the cost of maintenance can be

reduce.

6. What is the factor that reduce the life period of a

machine that are using electronics component?

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A

A

A

A

A

A

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Assignment 1 (E4101)

In a group, you are required to make a research/ observation to a

home appliances equipment. The research should cover the schematic diagram, 3 types of failure & the process step to troubleshoot the failure. The equipment are as below :-

1. Air conditioner.

2. Washing machine.

3. Television.

4. Lamp & ceiling fan.

5. Alarm system & 1 phase distribution board.

6. 3 phase switch gear & distribution board.

Pass up date - ___________ 12.15 afternoon.

Format - type. For any immitative work, marks anulment will be implement.

Grouping – 8 person per group

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Assignment 1 (E4120)

In a group, you are required to make a research/ observation

to an Audio Video/ home appliances company. The research should cover the data of:-

1. Intoduction.

2. Block diagram & the process operation.

3. Schematic diagram.

4. Specification.

5. Activity of maintenance.

6. Reference.

Pass up date - ___________ 12.15 afternoon.

Format - type. For any immitative work, marks anulment will be implement.

Grouping – 4 person per group

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E4101-Senggaraan Kejuruteraan

Answer 1

Combination between all technical process and all matters that connect to the maintenance system movement (equipment @ machine) which the purpose is to make the equipment in the system function according to the plan.

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E4101-Senggaraan Kejuruteraan

Answer 2

Update equipment system or machine. Reduce the risk of failure for equipment. Enhance the quality and maximize the equipment value. Increase the level of strength and toughness of the

equipment. Easier to identify the damage & the reason contribute to

the problem. Can produce and estimate the minimum cost of the

equipment. Can expect the machine’s life period.

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SENGGARAAN

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E4101-Senggaraan Kejuruteraan

Answer 3

Kos permulaan bagi senggaraan berperancangan adalah melebihi kadar kos yang diperlukan bagi senggaran tidak berperancangan. Kos ini akan meningkat sedikit kerana aktiviti senggaraan berkala yang dilakukan & akibat peningkatan usia mesin yang digunakan.

Walaubagaimanapun kos bagi senggaraan tidak berperancangan menunjukkan kos operasi akan meningkat dengan banyaknya akibat daripada terdapat banyak aktiviti sengaaraan yang tidak terancang yang mana mengakibatkan kehilangan kos yang lebih seperti kos buruh, masa dan sebagainya. 202020

SENGGARAAN

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E4101-Senggaraan Kejuruteraan

Answer 4

Pencegahan bagi mengurangkan kerosakkan dalam senggaraan Senggaraan ini membawa maksud sesuatu penentuan yang dibuat adalah mengikut kepada sesuatu pemerhatian atau menggunakan kriteria yang ada bersuaian dengan tujuan untuk pengurangkan kemungkinan berlakunya kegagalan dalam sesuatu sistem yang hendak dibuat.

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SENGGARAAN

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E4101-Senggaraan Kejuruteraan

Answer 5

Untuk meminimakan kos senggaraan, setiap kerja-kerja senggaraan perlulah dirancang dengan teliti dan setiap perancangan senggaraan mesti pempunyai bahagian-bahahian seperti senggaraan pencegahan, pembaikan, jadual senggaraan dan syarat-syarat dan dasar senggaraan.

 

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E4101-Senggaraan Kejuruteraan

Jawapan 6

Faktor yang memendekkan tempuh hayat sesebuah mesin yang menggunakan komponen elektronik adalah faktor perubahan suhu, tahap kelembapan, keadaaan persekitaran yang berkimia turut memendekkan tempoh hayat mesin terutama peralatan elektronik yang mudah rosak seperti Pemacu Elektronik dan PLC yang banyak digunakan di dalam industri.

Cara penggunaan juga banyak mempengaruhi tempoh hayat mesin terutama kepada peralatan yang melibatkan penggunaan di dalam rumah seperti radio, televisyen dan komputer peribadi. Kebanyakkan peralatan ini kurang diselenggarakan oleh penggunanya dan mungkin terdapat kesalahan cara penggunaan.

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