WHAT IS REFRIGERATION AND AIR CONDITIONING TECHNICIAN (MRAC) COURSE IN ITI

REFRIGERATION AND AIR  CONDITIONING TECHNICIAN (MRAC ) (Engineering Trade) (Duration: Two Years) NSQF LEVEL- 4 SECTOR – CAPITAL GOODS & MANUFACTURING  CRAFTSMEN TRAINING SCHEME (CTS)

• Name of the Trade :- REFRIGERATION AND AIR CONDITIONING TECHNICIAN
• Trade Code :- DGT/1010
• NCO: – 2015 7127.0100
• NOS Covered: ELE/N 1002, ELE/N3114, ELE/N3112, ELE/N 3108, CSC/N9413, CSC/N9414, ELE/N3140, ELE/N3141, CSC/N9415, CSC/N9416, CSC/N9417, CSC/N9418, CSC/N9419, CSC/N9420, CSC/N9421, CSC/N9422, CSC/N9423, CSC/N9401, CSC/N9402.
• NSQF Level Level :-  4
• Duration of Craftsmen Training (Instructional Hours): Two Years (2400 hours + 300 hours OJT/Group Project)
• Entry Qualification: Passed 10th class examination with Science and Mathematics or with vocational subject in same sector or its equivalent.
• Minimum Age:-  14 years as on first day of academic session.
• Eligibility for PwD:-  LD,CP,LC,DW,AA,,LV,DEAF,HH
• Unit Strength (No. of Student) :- 24 seats.

COURSE INFORMATION : 

During two-year duration of “Refrigeration and Air Conditioning Technician” trade a candidate is trained on professional skill, professional knowledge and Employability skill related to job role. In addition to this a candidate is entrusted to undertake project work, extracurricular activities and on job training to build up confidence. The broad components under Professional Skill subject are as below: –

FIRST YEAR: The trainee learns about personal safety and machinery safety, manipulating tools, instruments and equipment in refrigeration workshop. The trainee is able to perform fitting and sheet metal works related to repair refrigeration and air conditioning equipment. The trainee is able to work in electrical area to measure current, voltage, resistance and able to connect star and delta connections. The trainee is able to check and rectify the electrical defects in refrigerators. He will be able to identify the electronic components in refrigerator and rectify the defects. The trainee is able to operate gas welding machines for brazing in refrigeration systems. The trainee shall be able to repair, maintenance, Install, servicing, trouble shooting, fault detection, leak testing and gas charging, diagnosis & remedial measures in Refrigerator (Direct cool), Frost free refrigerator and Inverter technology Refrigerator. The trainee shall be able to identify different compressor, dismantling and assembling compressors. The trainee shall be able to start the motor through DOL, Star Delta starter and changing DOR. The trainee shall be able to service condensers. The trainee shall be able to fix refrigerant controls and service evaporator. The trainee shall be able to Recover and Recharge of Refrigerant used in systems, transfer & handling of gas cylinders. The trainee shall be able to Retrofit CFC/HFC machine with ozone friendly refrigerant. The trainee shall be able to fix thermal insulation. The trainee shall be able to install window AC, test Electrical, electronic components, Fault diagnosis & remedial measures in window A.C. The trainee shall be able to Install, servicing, trouble shooting, fault detection, leak testing and gas charging in Split A.C (wall mounted),Split A.C (floor, ceiling /cassette mounted Split A.C),Split A.C ( ducted ), multi Split A.C and Inverter Split A.C. The trainee shall be able to Installation, servicing, trouble shooting, fault detection, leak testing and gas charging in Car Air Conditioner.

SECOND YEAR: The trainee learns about different commercial compressor and its dismantling, assembling, fault finding and rectification. They will be able to descaling in water cooled condensers, Evaporative condenser and Cooling tower, Selection of Expansion valves and its installations, Service air cooled evaporator and blower. The trainee shall be able to Install, service, maintenance, trouble shooting, fault finding and rectification, leak testing, evacuation and gas charging, electrical circuit repairing in water cooler & water dispenser, visible cooler, bottle cooler, deep freezer / display cabinet, ice cube machine and softy machine. They will be able to Service, operate, test electrical controls, test leak, evacuation and gas charging , Periodic maintenance in Ice candy plant, Ice plant, walk in cooler & reach in cabinet and cold storage. The trainee learns about HVAC (study of psychrometry, blowers& fans, static and velocity pressure measurements). The trainee shall be able to make duct designing, duct making, insulating in ducts. The trainee shall be able to clean and fix air filters. The trainee shall be able to identify various components, Leak testing, evacuation, gas charging, Commissioning and troubleshooting of package A.C with air- and water-cooled condenser, split package. The trainee shall be able to trace electrical circuit, testing components, gas charging, Servicing AHU including fire dampers, Checking airflow, damper, temperature and pressure, operation, Descaling condenser and cooling tower of central AC plant (Direct and Indirect). The trainee shall be able to Identify VRF / VRV system, Check and service of VRF / VRV system, connect master unit and IDU, identify the location of ODU, identify the size of piping’s and laying work, Check control system and identify error code. The trainee shall be able to service and maintain the mobile A.C (bus, train). The trainee also undergoes project work and Industrial visit/ In plant training at the end of each year which gives them more practical exposure and helps to build up confidence level.

TRAINING SYSTEM

GENERAL The Directorate General of Training (DGT) under Ministry of Skill Development & Entrepreneurship offers a range of vocational training courses catering to the need of different sectors of economy/ Labour market. The vocational training programmes are delivered under the aegis of Directorate General of Training (DGT). Craftsman Training Scheme (CTS) with variants and Apprenticeship Training Scheme (ATS) are two pioneer schemes of DGT for strengthening vocational training. Refrigeration and Air Conditioning Technician trade under CTS is one of the most popular courses delivered nationwide through a network of ITIs. The course is of two years duration. It mainly consists of Domain area and Core area. The Domain area (Trade Theory & Practical) imparts professional skills and knowledge, while Core area (Employability Skills) imparts requisite core skill & knowledge and life skills. After passing out of the training programme, the trainee is awarded National Trade Certificate (NTC) by DGT which is recognized worldwide.

Candidates broadly need to demonstrate that they are able to:

•  Read and interpret technical parameters/ documentation, plan and organize work processes, identify necessary materials and tools.
•  Perform task with due consideration to safety rules, accident prevention regulations and environmental protection stipulations.
• Apply professional knowledge & employability skills while performing the job and modification & maintenance work.
•  Check the components as per drawing for functioning, identify and rectify errors in components.
•  Document the technical parameter related to the task   undertaken.

PROGRESSION PATHWAYS

• Can join industry as Technician and will progress further as Senior Technician, Supervisor and can rise up to the level of Manager.
•  Can become Entrepreneur in the related field.
•  Can join Apprenticeship programme in different types of industries leading to National
• Apprenticeship Certificate (NAC). Can join Crafts Instructor Training Scheme (CITS) in the trade for becoming instructor in ITIs.
•  Can join advanced Diploma (Vocational) courses under DGT as applicable.

COURSE STRUCTURE:

• Table below depicts the distribution of training hours across various course elements during a period of two years:

Course Element With Notional Training Hours :-

• 1st year (Total 1200 hours)

1. Professional Skill (Trade Practical) 840 hours2. Professional Knowledge (Trade Theory) 240 hours3. Employability Skills 120 hours4. On the Job Training (OJT)/ Group Project 150 hours

• 2nd year (Total 1200 hours)

1. Professional Skill (Trade Practical) 840 hours2. Professional Knowledge (Trade Theory) 300 hours3. Employability Skills 60 hours4. On the Job Training (OJT)/ Group Project 150 hoursEvery year 150 hours of mandatory OJT (On the Job Training) at nearby industry, wherever not available then group project is mandatory.Trainees of one-year or two-year trade can also opt for optional courses of up to 240 hours in each year for 10th/ 12th class certificate along with ITI certification, or, add on short term courses.

ASSESSMENT & CERTIFICATION The trainee will be tested for his skill, knowledge and attitude during the period of course through formative assessment and at the end of the training programme through summative assessment as notified by the DGT from time to time.

a) The Continuous Assessment (Internal) during the period of training will be done by Formative Assessment Method by testing for assessment criteria listed against learning outcomes. The training institute have to maintain individual trainee portfolio as detailed in assessment guideline. The marks of internal assessment will be as per the formative assessment template provided on www.bharatskills.gov.in

b) The final assessment will be in the form of summative assessment. The All India Trade Test for awarding NTC will be conducted by Controller of examinations, DGT as per the guidelines.

The pattern and marking structure is being notified by DGT from time to time. The learning outcome and assessment criteria will be basis for setting question papers for final assessment. The examiner during final examination will also check individual trainee’s profile as detailed in assessment guideline before giving marks for practical examination.

PASS REGULATION For the purposes of determining the overall result, weightage of 100% is applied for six months and one year duration courses and 50% weightage is applied to each examination for two years courses. The minimum pass percent for Trade Practical and Formative assessment is 60% & for all other subjects is 33%.

ASSESSMENT GUIDELINE Appropriate arrangements should be made to ensure that there will be no artificial barriers to assessment. The nature of special needs should be taken into account while undertaking assessment. Due consideration should be given while assessing for teamwork, avoidance/reduction of scrap/wastage and disposal of scrap/wastage as per procedure, behavioral attitude, sensitivity to environment and regularity in training. The sensitivity towards  OSHE and self-learning attitude are to be considered while assessing competency.

Assessment will be evidence based, comprising some of the following:

• Job carried out in labs/workshop
• Record book/ daily diary
• Answer sheet of assessment
• Viva-voce
• Progress chart
• Attendance and punctuality
• Assignment
• Project work
• Computer based multiple choice question examination
• Practical Examination

Evidences and records of internal (Formative) assessments are to be preserved until forthcoming examination for audit and verification by examination body.

JOB ROLE

Mechanic Refrigeration and Air Conditioner; installs and repairs refrigeration or air conditioning plant by replacing or repairing defective parts, re-seating valves, refitting coils, insulting, requiring electrical connections, soldering etc. Installs at site assembled air conditioning unit and refrigerators giving necessary power connections and making changes to units as necessary to attain desired results. Examines faulty equipment to ascertain nature and location of defects. Dismantles equipment partly or completely according to nature of defects to remove damaged or worn out parts. Replaces or repairs defective parts. Replaces or repairs defective parts to units by re-seating valves, refitting coils, re-insulating system, etc. over hauls units and reassembles them after cleaning components and replacing defective or worn out parts of pumps, compressors, motors, etc., Removes faulty sealed units or sub-units of refrigerators or air conditioning plants and obtains replacements. Conducts vacuum and pressure test of pipe lines and charges system with fresh refrigerant. Sets plant to desired cooling conditions, prevents leakage and ensures attainment and maintenance of required temperature. Gets burnt out motors or generators repaired by Electrician or Electrical Winder and installs repaired ones to plant giving necessary electrical connections. May work in ice factory, cold storage plants, specialized air conditioning units or domestic refrigerators. Repair and service in refrigerator, water cooler, bottle cooler, deep freezer, Visi Cooler, Walk in Cooler, Ice candy plant, Cold storage, Ice plant, Split Air Conditioner, Package Air Conditioner, Central Air Conditioner, mobile Air Conditioner. Plan and organize assigned work and detect & resolve issues during execution in his own work area within defined limit. Demonstrate possible solutions and agree tasks within the team. Communicate with required clarity and understand technical English. Sensitive to environment, self-learning and productivity.

Thank you…….!