Mechanic (Refrigeration and Air-Conditioning)

ITI trade Mechanic (Refrigeration and Air-Conditioning) is powered by NCVT. ITI trade Mechanic (Refrigeration and Air-Conditioning) is a job oriented trade ITI trade Mechanic (Refrigeration and Air-Conditioning) is suitable for government job and private job. This ITI trade Mechanic (Refrigeration and Air-Conditioning) is very powerful for self-empowerment. This ITI trade Mechanic (Refrigeration and Air-Conditioning) is perfectly design to fulfill industrial requirement of Indian Industries as well as International industries.
Semester – I
- (i) Awareness of trade related hazards and safety.
- (ii) Produce fitting jobs as per drawing (Range of operations: marking, sawing, filing, drilling, reaming, taping and dieing etc.)
- (iii) Produce Sheet metal components (range of operation – marking, metal cutting, bending, riveting and soldering etc.)
- (iv) Aware of electrical safety. Join different wire, measure power, currents, volts and earth resistance etc. Connect single phase, 3 phase motors i.e. star and delta connections.
- (v) Identify the electronic components and their colour code i.e. transistor, capacitor, diode, amplifier, I.C and able to work soldering.
- (vi) Perform gas welding, brazing, soldering observing related safety.
- (vii) Identify RAC tools and equipments and recognise different parts of RAC system. Perform copper tube cutting, flaring, swaging, brazing.
- (viii) Test mechanical & electrical components. Perform leak test, vacuuming, gas charging, wiring & installation of refrigerator.
- (ix) Perform door alignment, door gasket fitting, replace door switch.
- (x) Test compressor motor terminal, start compressor Direct with relay & without relay, technique of flushing, leak testing, replacing capillary & filter drier, evacuation & gas charging.
- (xi) Check components of frost free refrigerator (electrical / mechanical), wiring of frost free freeze & air distribution in refrigerator sector. Leak detection, evacuators & gas charging.
Semester – II
- (xii) Dismantle, repair and assemble hermetic, fixed and variable speed compressor, and test performance.
- (xiii) Identify the terminals of sealed compressor and their wiring and measure current, volts, watts and use of DOL starter with different types of motors
- (xiv) Selection of Hermetic compressor for different appliances, starting methods, testing controls & safety cut out used in sealed compressor.
- (xv) Identify the components of control system of Inverter A.C and wiring of control system.
- (xvi) Servicing & de-scaling of condenser (internals & externals) used in different appliances.
- (xvii) Fitting & adjustment of drier, filter & refrigerant controls used in different refrigeration system.
- (xviii) Servicing of different evaporator used in different appliances.
- (xix) Recovery and Recycling of Refrigerant used, alternative of CFC, HFC re-cover, transfer & handling of gas cylinders.
- (xx) Retrofit CFC/HFC machine with ozone friendly refrigerant with understanding of the compatibility.
- (xxi) Pack thermal insulation, prevent cooling leakage.
- (xxii) Installation of window AC, test Electrical & electronics components & Fault diagnosis & remedial measures.
- (xxiii) Servicing electrical & electronic control test, Installation, wiring, fault finding & remedial measures of different split AC.
- (xxiv) Servicing car AC. Fault diagnosis & remedial measures.
Semester – III
- (xxv) Servicing, dismantling, checking different parts of different types of commercial compressor, re-placing worn out parts, Check lubrication system. Assemble & check performance.
- (xxvi) Servicing of different types of water cooled condenser
- (xxvii) Servicing and performance test of Cooling tower.
- (xxviii) Servicing, backwash & regenerate Water treatment plant of circulating water.
- (xxix) Fitting of expansion valve, adjustment of refrigerant flow according to heat load.
- (xxx) Servicing of evaporator & chillers.
- (xxxi) Servicing and retrofit of Water cooler and dispenser.
- (xxxii) Service, retrofit of visible cooler and bottle cooler and test performance.
- (xxxiii) Servicing deep freezer and test performance.
- (xxxiv) Installation, servicing, repairing, gas charging and testing performance of Ice Cube machine.
- (xxxv) Repair, servicing & retrofit of ice candy plant.
- (xxxvi) Servicing of Ice plant and evaporative condenser.
- (xxxvii) Servicing and preventive maintenance of walk in cooler & cold storage.
Semester – IV
- (xxxviii) Study psychrometric chart and measure psychrometric properties using psychrometric, anemometer i.e. DBT, WBT, RH, air flow etc.
- (xxxix) Servicing motor and blowers used in different air conditioning system.
- (xl) Construction, installation, packing thermal and acoustic insulation of different air ducts.
- (xli) Servicing and maintenance of different types of air filters.
- (xlii) Servicing, installation, fault diagnosis and remedial measures on Package AC with Air cooled condenser.
- (xliii) Servicing, installation, fault diagnosis and remedial measures in Package A.C. with water cooled condenser.
- (xliv) Identify the various components of central AC test electrical components and make wiring. Servicing of A.H.U, damper, check air flow, De-scaling of condenser and CT servicing.
- (xlv) Pump down the system, top up oil and gas and check temperature and pressure.
- (xlvi) Identify components of DX system. Test components, make wiring of dx system. Test leak and evacuate, gas charge the system and check the performance. Maintenance, trouble shoot and operate the plant.
- (xlvii) Identify the different part of VRF system, check and service VRF/VRV system.
- (xlviii) Identify different part of indirect or chillers system. Check components and make wiring, leak test, evacuate and gas charge/ top up. Servicing the plant and trouble shoot.
- (xlix) Identify chilled water pipe line. Servicing of dampers, FCU and water control valves.
Generic Learning Outcomes
- (l) Troubles shoot of both central A.C. plant. Dx and indirect system. Check different control system, installation of other major components, servicing of all parts including cooling tower and water treatment plant.
- (li) Servicing, fault diagnosis, repair and maintenance of mobile A.C. leak test, evacuation, gas charging, check magnetic clutch and make wiring. Test performance after start.
- (lii) Preventive maintenance of different plants. Maintain log book based on daily operation.
- (liii) Recognize & comply safe working practices, environment regulation and housekeeping.
- (liv) Understand and explain different mathematical calculation & science in the field of study including basic electrical. [Different mathematical calculation & science -Work, Power & Energy, Algebra, Geometry & Mensuration, Trigonometry, Heat & Temperat
- (lv) Interpret specifications, different engineering drawing and apply for different application in the field of work. [Different engineering drawing-Geometrical construction, Dimensioning, Layout, Method of representation, Symbol, Different Projections,
- (lvi) Select and measure dimension of components and record data.
- (lvii) Explain the concept in productivity, quality tools, and labour welfare legislation and apply such in day to day work to improve productivity & quality.
- (lviii) Explain energy conservation, global warming and pollution and contribute in day to day work by optimally using available resources.
- (lix) Explain personnel finance, entrepreneurship and manage/organize related task in day to day work for personal & societal growth.
- (lx) Plan and execute the work related to the occupation.
