TECHNICAL EDUCATION & VOCATIONAL TRAINING AUTHORITY

Transcription

1 GOVERNMENT OF THE PUNJAB TECHNICAL EDUCATION & VOCATIONAL TRAINING AUTHORITY CURRICULUM CURRICULUM FOR FOR HEATING VENTILATION AIR CONDITIONING & REFRIGERATION (6 Months Course) CURRICULUM SECTION ACADEMICS DEPARTMENT 96-H, GULBERG-II, LAHORE Ph # , gm.acad@tevta.gop.pk, manager.cur@tevta.gop.pk

2 HVACR (6 Months Course) 2 TRAINING OBJECTIVES: Industrial development is rapidly increasing with the qualitative products to meet the requirement of the public demand. There, the trained & skillful persons play a vital role in the modern era of the industrial growth because of the increase of technological development all over the world. This curriculum of six months duration is developed keeping in view the local job market demand and industrial requirements by more focusing on practical training along with necessarily required theoretical knowledge. This curriculum covers the major topics of safety rules, basic electricity, refrigeration cycle, measuring instruments, servicing, and fault diagnoses & their troubleshooting, repair & maintenance of direct cool & non-frost refrigeration, emetics (window type) & split air conditioners along with work ethics in order to produce the skillful and capable workforce to meet the present & future demands of the job market.. CURRICULUM SALIENTS: Entry Level : Matriculation Duration of course : 06 - Months Total Training Hours : 800 Hours : 40 Hours per week : 06 days per week 7 Hours per Day Except Friday 5 Hours Training Methodology : Practical 90% : Theory 0% Medium of Instruction : Urdu / English :

3 HVACR (6 Months Course) 3 SKILL PROFICIENCY DETAILS: - On successful completion of the course, the trainee should be able to:. Observe safety rules while dealing with electrical circuits and refrigeration works etc. 2. Use the tools of HVACR properly 3. Use measurement and testing equipment safely and accurately. 4. Solder the copper tube and their joints. 5. Braze joints the copper tube and their joints. 6. Use the electric motor,.transformer & capacitor properly 7. Repair the following HVACR Equipments. Direct cool refrigerator. Non-frost refrigerator. Domestic air conditioner (window type) Split air conditioner. Package type air conditioner. 8. Maintain the Log sheets of the units properly. Daily Weekly Quarterly Annually

4 HVACR (6 Months Course) 4 KNOWLEDGE PROFICIENCY DETAILS: On successful completion of this course, the trainee should be able to: -. Explain the safety precautions for working with electrical power supply / electrical components. 2. Explain the use, care and maintenance of HVACR technician s tools and measuring cum testing equipment. 3. Express the electricity theory, AC and DC, electromagnetism, Ohm s law, units of electricity, symbols 4. Express the electrical circuits and their properties 5. Describe the capacitor (running, starting and fan capacitor) 6. Describe the transformers. 7. Explain the refrigeration cycle. 8. Explain the compressor. 9. Define the condenser. 0. Define the refrigerant controls.. Explain the evaporators. 2. Explain the fans 3. Describe the refrigerants (CFC / HCFC / HFC). 4. Describe the Basic theory, symbols, characteristics and working principles of: Over loads Relays Thermostat Capacitors Liquid receivers 5. Define the principles and laws of refrigeration. 6. Define the principles and working of air-conditioner. 7. Express the basic working principle of split air-conditioner 8. Explain the fault-finding and trouble shooting techniques of refrigerator, air-conditioner, split air-conditioners. 9. Explain the use of environmental friendly techniques.

5 HVACR (6-Months Course) 5 CURRICULUM DELIVERY STRUCTURE Curriculum Delivery Revision Co-curricula Activities Final Test Total W E E K

6 HVACR (6-Months Course) 6 SCHEME OF STUDIES Heating Ventilation Air-Conditioning & Refrigeration (6 - Months Course) Sr. Theory Practical Total Main Topics No. Hours Hours Hours. Workshop Practice Measuring & Pipe Fitting Welding Basic electricity Electric Motor, transformer& capacitor Fundamental of Refrigeration Refrigeration Cycle Air Conditioning Technical Mathematics Technical Drawing 0-0. Functional English Work Ethics Total

7 HVACR (6-Months Course) 7 DETAIL OF COURSE CONTENTS Heat Ventilation Air-Conditioning & Refrigeration (6- Months Course) Sr. Detail of Topics No.. Workshop Practice.. Introduction (Workshop, Work Place, Tools)... Order of workplace..2. Introduction to general tools used in the metal workshop, their care and proper use..3. Safety precautions.2. Measuring (General Introduction).2.. Purpose of measuring and checking tools.2.2. Accuracy of measuring.2.3. Linear measuring (steel rules, calipers, vernier calipers).2.4. Measuring Faults.2.5. Care and Maintenance of Measuring tools.3. Marking.3.. Necessity of marking.3.2. Common marking tools (scriber, steel rule, & centre punch).4. Filing.4.. Process of filing.4.2. Types of files with regards to cut and shape.5. Sawing.5.. Cutting principle (rake angle).5.2. The saw blade (pitch of teeth, setting Theory Practical Hours Hours 0 70

8 HVACR (6-Months Course) 8 of teeth and tightening the blade in the frame).6. Drilling.6.. Drilling of thought holes (effect of movements of the drill, cutting process).6.2. Main parts (their name and function).6.3. Clamping and removing of twist drills.6.4. Drilling faults.7. Reaming.7.. Purpose and process of reaming.7.2. Types of reamers (Hand reamers, machine reamers and adjustable reamers).8. Counter Sinking and Counter boring.8.. Counter sinking tools, purpose and procedure.8.2. Size / No. of Counter bore.9. Filing Exercise I.9.. Filing of Channel.0. Marking Exercise.0.. Flat Filing.0.2. Marking.0.3. Centre Punching.. Filing Exercise II... Flat Filing..2. Square Filing.2. Sawing Exercise.2.. Sawing and Square Filing within size.3. Sheet Metal Box I.3.. Filing.3.2. Marking.3.3. Shearing

9 HVACR (6-Months Course) 9.4. Drilling Exercise.4.. Marking.4.2. Center Punching.4.3. Drilling.4.4. De burring 2. Measuring, Pipe Fitting 2.. Purpose of measuring 2.2. Measuring by steel rule, calipers, vernier calipers and its type 2.3. Use of micrometer, standard wire gauge 2.4. Units of length and angle 2.5. Marking Marking Tools Method of marking 2.6. Cutting Cutting Principals Types of chisels and hand shears and their use 2.7. Pipe Fitting Types of Pipes and material Pipe wrenches and dies Types of pipe fitting, cutting and threading Use of hand tools and safety precautions 2.9. Purpose of measuring 2.0. Accuracy of measuring 2.. Measuring with steel rule, standard wire gauge and micrometer 2.2. Use of marking tools 2.3. Methods of marking 2.4. Use of chisels and hand shares 2.5. Types of files 2.6. Use of File (Cuts and shapes) 08 2

10 HVACR (6-Months Course) Cutting and notches of pipe 2.8. Types of pipe and materials 2.9. Use of pipes wrenches and dies Making of pipe fitting, cutting and threading 3. Welding 3.. Introduction of welding 3.2. Welding Tools and Equipments 3.3. Types of welding (Arc and gas welding) 3.4. Introduction of gases used in gas welding 3.5. Types of flames 3.6. Preparation of flames 3.7. Joining of copper tubes of equal and unequal sizes with gas welding 4. Basic Electricity 4.. Introduction of Electricity 4.2. Structure of Atom and their particles 4.3. Definition of Electric Current, 4.4. Types of Current 4.5. Conductors, Semi conductors and insulators 4.6. First aid and treatment for electric shock 4.7. Circuits 4.8. Introduction of current, volt and resistance and their units 4.9. Ohm s law 4.0. Resistance Depends on, material, length, cross section area and temperature 4.. Series circuit, parallel circuit 4.2. Series and parallel circuit 4.3. Power and Energy 4.4. Use of Ampere meter 4.5. Use of voltmeter

11 HVACR (6-Months Course) 4.6. Use of multimeter 4.7. Use of watt meter 4.8. Measuring of power by different method 4.9. Use of clamp on meter tube light circuit Making series connection, parallel and series, parallel connection 5. Electric Motor, Transformer and Capacitor 5.. Electric Motor 5... Definition Types of AC / DC Motor Construction of AC Motor Single Phase Motor (AC) Kinds of single phase motor Split phase induction motor Capacitor start motor Capacitor start and run motor Shaded pole motor Introduction of three phase motor 5.2. Transformer Construction of transformer Types of transformer 5.3. Capacitor Electric Field Die Electric Capacitance Types of capacitor Capacitors connection in series and parallel 5.4. Construction of AC motor Opening and assembling of AC single phase motor Complete the wiring diagram of split phase induction motor

12 HVACR (6-Months Course) Making connection of capacitor start motor Making connection of capacitor start capacitor run motor Connection of shaded pole motor Use of shop down, step up and Auto Transformer Measuring of transformer output Methods of capacitors checking Checking of capacitor with multimeter Checking of capacitor with series test board Use of capacitor analyzer 6. Fundamental of Refrigeration 6.. Introduction of refrigeration 6.2. Definition of refrigeration 6.3. Scope of refrigeration 6.4. Types of refrigeration 6.5. Mechanical refrigeration 6.6. Heat Definition of heat Sensible heat Latent heat Units of heat Heat transfer methods 6.7. Temperature Definition and measurement of temperature Absolute zero temperature Temperature scales and its measurement Pressure Definition and measurement devices Atmospheric, gauge and absolute

13 HVACR (6-Months Course) 3 pressure Vacuum pressure, temperature, relationship Dalton law of partial pressure Pascal s law Boyle s law Charles law Gas Law 6.9. Introduction of Brass Fitting 6.0. Introduction of Copper Fitting and Copper Pipe sizing. 6.. Flaring of copper Tube 6.2. Use of Flaring and swaging Tools Swaging of Copper Tube Use of Bending Tools (Spring Type and lever Type Bender) Bending of Tube Cutting of Capillary Tube and sizing. 7. Refrigeration Cycle 7.. Principles of refrigeration. 7.. Law of thermodynamics Law of refrigeration Basic components of basic refrigeration cycle Compressor 7.2. Definition of compressor Types of compressor Reciprocating compressor and its parts Rotary compressor and its parts Centrifugal comp and screw Type compressor and its parts Opening of sealed type compressor Identification of compressor parts

14 HVACR (6-Months Course) 4 (reciprocating type, rotary type and screw type compressor) Overhauling and assembling of reciprocating compressor Overhauling and assembling of rotary type compressor 7.2. Overhauling and assembling of screw type compressor Introduction and identification of centrifugal compressor Introduction and identification of centrifugal compressor Making of gas kit / head plate and valve plate Air gap adjustment / Rotor and stator Checking of terminals (compressors and motor) 7.3. Condenser 7.3. Definition Types of condenser Servicing of air and water cooled condenser Servicing of air and water cooled condenser and its installation Refrigerant control (AXV and TXV) 7.4. Refrigerant control 7.4. Definition Types of refrigerant control AXV, TXV, Capillary tube, LS Float Valve and HS Float Valve 7.5. Evaporator 7.5. Definition

15 HVACR (6-Months Course) Types of Evaporators according to construction Types of evaporators according to temp Servicing and installation of evaporator water cooler Definition and electric wiring of water cooler 7.6. Relays 7.6. Identification of current relay and its checking Checking of electronic relay Checking of hot wire relay Checking of potential relay Overload Identification, Definition and checking of over load Thermostat Definition and checking of thermostat 7.8. Pressure switches 7.8. Definition, identification of pressure switches and its checking 7.9. Water cooler 7.9. Definition and electric wiring of water cooler Deep Freezer 7.0. Definition and electric wiring of deep freezer Electric wiring of single door and double door refrigerator, non frost refrigerator Differentiate in direct cool refrigerator and indirect cool refrigerator 7.. Gauges

16 HVACR (6-Months Course) Use of single compound gauge and gauge manifold 7..2 Gas charging 7..3 Leak testing of refrigerator vacuuming of all type of unit 7..4 Gas charging of refrigerator 7..5 Gas charging of deep freezer 7.2. Lubricants 7.2. Lubricants and its types Dil charging 7.3. Troubleshooting of refrigerator 7.4. Troubleshooting of deep freezer 7.5. Troubleshooting of non frost refrigeration 7.6. Checking of compressor efficiency 7.7. Introduction and making of star delta connection 7.8. Checking of installation of defrost timer 7.9. Pump down the ref unit and replacing the TXV Use of technmometer 7.2. Use of Magger meter 8. Air Conditioning 8.. Fundamental of Air Conditioning 8.2. Definition 8.3. Types of Air conditioning 8.4. Scope of Air conditioning 8.5. Psychometric properties of Air 8.6. Wet Bulb Temp, Dry Bulb Temp, Dew Point Temp, Absolute / Relative Humidity 8.7. Electric Wiring of window type AC 8.8. Electric Wiring of Split AC 8.9. Installation of Window AC 8.0. Installation of Split AC 8.. Gas charging of Window AC

17 HVACR (6-Months Course) Gas charging of split AC 8.3. Introduction of ducts and its installation 8.4. Introduction and installation of Air Filter 8.5. Troubleshooting of Window AC 8.6. Troubleshooting of Split AC 8.7. Introduction of Auto Mobile Air Conditioning 8.8. Introduction of heat load 8.9. Calculation of heat load Introduction of valves 8.2. Solenoid Valve Hand Expansion valve Service Valve Introduction of refrigeration Accessories Muffler Moisture Indicator Heat Exchanger Oil separator Accumulator Sight glass 8.3. Vibration Absorber King valve Relief valve Water regulating valve (pressure type) Oil pressure control switch Liquid Receiver Introduction and use of insulating materials Introduction of heating methods Filling of daily log, monthly, annual log sheets Maintenance 8.4. Types of maintenance Proactive Periodic Break down

18 HVACR (6-Months Course) Format 9. TECHNICAL MATHEMATICS 9.. Introduction Whole numbers 9... Addition and subtraction Multiplication and division 9.2. Decimal Fractions Addition, subtraction Multiplication, division 9.3. Conversion of Inch to Metric System Equivalent of one inch in mm Conversion of dimensions 9.4. Percentages Meaning of percentage Changing numbers to percents Changing percents to decimal and common fractions 9.5. Fractions Addition, subtraction of common fractions Proper fractions, improper fractions and mixed numbers Multiplication and division of fractions 9.6. Decimal System of Measurement Meter, gram, liter Multiples and parts of units 9.7. Transposition of Equations Exchangeable sides of a scale Addition, Subtraction 9.8. Transposition of Formula Exercise with simple already known formula Multiplication and division

19 HVACR (6-Months Course) 9 L x h A= Magnitudes of Current and Voltage Units and subunits of current, 9.0. Ohm s Law resistance and voltage MA KA A ma?a M? K?? m??? MV KV V mv?v Calculation of current, voltage and resistance V I =, V =I x R R V R = I 9.. Resistance of a Wire 9... Calculation of R, I, A by applying formula:?? l l R = ---- ; R = ---- A?? A L l G = --- ; s = R? 9.2. Series Connection I = I = I 2 = I V= V +V 2 +V R=R +R 2 +R V = V 2 = R : R Parallel Connection V = V = V 2 = V I = I +I 2 +I I = I + I + I R R R 2 R G = G + G2 + G I = I 2 = R = R 2

20 HVACR (6-Months Course) Technical Drawing 0.. Introduction to Technical Drawing 0... Kinds of lines Drawing instruments Lettering exercises 0.2. Symbols of Electrical Circuits Voltage sources Switches Consumers 0.3. Simple Current Path Diagrams 0.4. Single Pole Switch Circuit 0.5. Multi circuit Switch Circuit Two-Way Switch Circuit Intermediate Switch Circuit 0.6. Combination of Different Circuits 0.7. Kitchen Installation 0.8. Living room Installation TOTAL

21 HVACR (6-Months Course) 2 LIst of Practical. Use of hand tools & Safety precautions 2. Use of cutting tools, chisels, hand share, fillers, Drills 3. Process of filling (Cuts and shape) 4. Cutting and Noicher of Pipe 5. Procedure of Drilling 6. Bending Tools 7. Use of bending Machine and rolling machine 8. Use of Hammers and Mallets Pipe Fitting 9. Pipe Fitting cutting and threading 0. Use of tube cutter, pipe cutter and wire cutters. Use of Flaring tools, swaging tools and bending tools welding 2. Arc & gas welding 3. Joining of Copper Tubes of Equals & unequal sizes with gas welding 4. Basic Electricity 5. Connection of single pole switch with one lamp 6. Series Circuit 7. Parallel Circuit 8. Series and Parallel Circuit 9. Series and Parallel Test Board Circuit 20. Tube Light Connection 2. Use of Volt, Amp and Watt Metter 22. Use of Multi meter 23. Use of Clump on meter 24. Transformer and Capacitor 25. Use of Transformer and measuring of output 26. Checking of capacitor 27. Introduction of Brass Fitting 28. Introduction of Copper Fitting and Copper Pipe Sizing 29. Flaring of Tube 30. Swaging of Tube

22 HVACR (6-Months Course) Bending of Tube 32. Cutting of Capillary Tube and Sizing 33. Compressor 34. Opening of Sealed Type Compressor 35. Identification of Compressor Parts (All Types) 36. Overhauling and Assembling of Reciprocating Compressors (Sealed, Open Type, Semi Sealed) 37. Over hauling and assembling of Rotary compressor 38. Over hauling and assembling of screw type compressor 39. Introduction of centrifugal compressor 40. Air Gap adjustment / Rotor and stator 4. Checking of terminals (compressor & motors) 42. Relays 43. Identification of current relay and its checking 44. Checking of Electric relay 45. Checking of Hot wire relay 46. Checking of Potential relay 47. Overload 48. Identification of Overload and its checking 49. Checking of thermostat 50. Pressure switches 5. Identification of pressure switches and it s checking 52. Electric wiring of single and double door refrigerator 53. Servicing of Air cooled condenser and water cooled condenser 54. Servicing of Evaporator 55. Installation of Air cooled condenser 56. Installation of Evaporator 57. Electric Wiring of Water Cooler 58. Electric Wiring of Deep Freezer 59. Electric Wiring of Non Frost Refrigerator 60. Electric Wiring of Window AC 6. Electric Wiring of Split AC 62. Installation of Window AC 63. Installation of Split AC

23 HVACR (6-Months Course) Lubricants and its types 65. Oil Charging 66. Use of Single compound gauge and gauge manifold 67. Vacuuming of all types of units 68. Leak Testing of refrigerator 69. Leak Testing of Window AC 70. Gas charging of Refrigerator 7. Gas charging of Deep Freezer 72. Gas charging of window AC 73. Gas charging of split AC 74. Introduction of ducts and its installation 75. Installation and introduction air filters 76. Troubleshooting of Refrigerator 77. Troubleshooting of Window AC 78. Troubleshooting of Split AC 79. Troubleshooting of Non Frost Refrigerator 80. Troubleshooting of Deep Freezer 8. Introduction of sling Psychrometer 82. Use of Sling Psychrometer 83. Introduction of heat load 84. Pump Down the system 85. Compressor Efficiency 86. Identification and use of defrosting timer 87. Use of tachometer 88. Use of Magger meter 89. Introduction of valves, Solenoid valve, HEV, service valve 90. Introduction of refrigeration accessories 9. Mufflers 92. Moisture Indicator 93. Heat Exchanger 94. Oil Separator 95. Accumulator 96. Sight Glass 97. Vibration Absorber

24 HVACR (6-Months Course) King Valve 99. Relief Valve 00. Oil Pressure Control. Liquid Receiver 02. Introduction & Use of insulating material 03. Introduction and use of heating method 04. Filling of daily log, monthly, annual log sheets 05. Maintenance 06. Types of maintenance 07. Proactive 08. Periodic 09. Breakdown

25 HVACR (6-Months Course) 25 LIST OF TOOLS & EQUIPMENTS (For a Class of 20 Students) Name of Trade Duration OF Course HVACR 6 Months Sr. No. Name of Tools & Equipment Quantity Tube Cutter 05 No s 2 Pinch Tools 05No;s 3 Hack saw 30 No;s 4 Chisels 30 No;s 5 Pliers 30 No;s 6 Snipers 05 No s 7 Calipers 0 No s 8 Measuring Taps 0 No s 9 Packing gland wrench 03 No s 0 Electric hand drills 04 No s Multi meter 0 No s 2 Absolute Vacuum pump No 3 Wheel Pullers 02 No s 4 Taps, dies and reamers 03 sets 5 Tachometer 03 No s 6 Clamp on meter 05 No s 7 Lab with work Tables (4 x8 ) 03 No s 8 Flaring tools 05 No s 9 Tube benders 05 No s 20 Files sets 20 No s

26 HVACR (6-Months Course) 26 2 Punches 20 No s 22 Spanners Set 20 No s 23 Pipe Spanners 05 No s 24 Scissors 05 No s 25 Wire Brushes 05 No s 26 Rachet Spanners 05 No s 27 Soldering iron 05 sets 28 Thermometers 0 No s 29 Amp Meters 0 No s 30 Magger (Insulators000 Volt) No 3 Pressure gauges 0 No s 32 Pipe cutters 0 No s 33 Leak Detectors; Electronic, Halide Torch 2 each 34 Humidistat (digital & ordinary) No 35 Gas charging station 02 No s 36 Air-Conditioners (Window type) 05 No s 37 Air Velocity meters 03 No s 38 Swaging Tools 05 sets 39 Reamers 05 sets 40 Hammers 0 No s 4 Screw drivers 05 No s 42 Socket set 05 No s 43 Allen key set 05 No s 44 Dividers 05 No s 45 Drills bits (set) 06 sets 46 Fin comb 05 No s

27 HVACR (6-Months Course) Welding Equipment 05 sets 48 Pressure Gauges 05 No s 49 Test Cord 05 No s 50 Refrigerant chart No 5 Levels 05 No s 52 Screw extractors 02 No s 53 Gasket Knottier 02 No s 54 Capacitor Analyzer with tester 02 No s 55 Refrigerators (Used) Direct Cool, No Frost 3 each 56 Micro Pressure gauges No 57 A/C Split No 58 Deep Freezers No

28 HVACR (6-Months Course) 28 EMPLOYABILITY OF PASS OUTS The pass outs of this course may find job / employment opportunities in the following sectors / areas: Air Conditioners Manufacturing Industry 2 Refrigerators Manufacturing Industry 3 Air Conditioned Commercial Units 4 Air Conditioned Industrial Units 5 Sale shops of Refrigeration & Air Conditioning Appliances 6 Installation Firms of Air Conditioners 7 Air Conditioning Repairing Workshop

29 HVACR (6-Months Course) 29 REFERENCE BOOKS. Modern Refrigeration & Air Conditioning By Athous Tranquest And Good Heart 2. Principles of Refrigeration By R.J Dossat 3. Refrigeration & Air Conditioning Practice By Billy C. Langelly 4. Trane Air Conditioning Manual By Trane Company USA 5. TTP 9 By Development Cell 6. TTP 92 By Development Cell 7. TTP 93 By Development Cell 8. TTP 94 By Development Cell 9. TTP 95 By Development Cell

30 HVACR (6-Months Course) 30 MINIMUM QUALIFICATION OF INSTRUCTOR DAE in Refrigeration & Air Conditioning Technology with two years experience in the relevant field OR Two Years certificate of HVACR (G-II Level) with six years experience in the relevant field.