Refrigeration and Air Conditioning Mechanic A Guide to Course Content

Transcription

1 Refrigeration and Air Conditioning Mechanic A Guide to Course Content Refrigeration and Air Conditioning Mechanics install, maintain and repair primary and secondary refrigeration and cooling systems, in commercial and industrial settings. Training Requirements: To graduate from each level of the apprenticeship program, an apprentice must successfully complete the required technical training and compile enough on-the-job experience to total at least 1800 hours each year. Total trade time required is 7200 hours and at least 4 years in the trade. There are four levels of technical training delivered by Saskatchewan Polytechnic in Saskatoon: Level One: 8 weeks Level Two: 8 weeks Level Three: 8 weeks Level Four: 8 weeks *Any person who is not a journeyperson refrigeration and air conditioning mechanic must become registered as an apprentice to work in this trade. The information contained in this pamphlet serves as a guide for employers and apprentices. The pamphlet briefly summarizes the training delivered at each level of apprenticeship training. An apprentice spends approximately 15% of the apprenticeship term in a technical training institute learning the technical and theoretical aspects of the trade. The hours and percentages of technical and practical training may vary according to class needs and progress. The content of the technical training components is subject to change without notice. 06/15

2 Level One - 8 weeks Controls electrical controls basic cycling controls basic electrical circuits Refrigeration System Components and Accessories compressors metering devices evaporators condensers Fundamentals of Refrigeration temperature and temperature measurement pressure and pressure measurement heat and heat transfer Basic Refrigeration Cycle basic cycle diagram refrigerant condition in the system components basic system components Refrigerants types of refrigerants refrigerant safety practices CFC training Basic System Applications design and install a small commercial refrigeration unit start-up and commission a small commercial refrigeration unit Hand Skills and Service Techniques piping and pipe joining soldering and brazing utilization of service equipment, instruments and tools required for service procedures Hand Tools hand and power tools cutting tools measuring tools basic machine shop Welding/Cutting torch brazing oxy-fuel cutting Industrial Communications Mathematics

3 Level Two - 8 weeks Electricity and Applications electrical circuits wiring diagrams electrical components troubleshooting techniques Introduction to Commercial Applications system design and piping practices defrost methods dehydration and evacuation methods Refrigeration Flow Controls and Accessories types of flow controls system accessories and basic cycling components calibration procedures HVAC Basics air properties HVAC system types HVAC controls air flow problems Motor and Single Phase Electrics motor types motor starting devices motor protection devices motor testing Systems and Service Analysis identification/management of system problems identification and selection of system components and accessories introductory electrical troubleshooting Comprehensive Systems Analysis refrigeration and HVAC system problems system components, flow controls and accessories Commercial Applications installation of a water cooled system controlling the temperature in two fixtures at different temperatures design and installation of the electrical system and calibration of the system controls Medium Temperature Applications installation of an air cooled refrigeration system variations in electrical control systems troubleshooting skills Control Systems Lab design and assembly of typical electrical systems used on refrigeration and HVAC equipment troubleshooting techniques for motors and electrical components

4 Mathematics Level Three - 8 weeks Systems and Service Management system problem variations system components, accessories and flow controls Piping Design and Line Sizing piping arrangements for discharge, condensate, liquid and suction lines pipe sizing applying the mechanical code Capacity and Head Pressure Control capacity controls for refrigeration systems head pressure controls for refrigeration systems Commercial Refrigeration Systems and Service system oil problems cleanup after burnout troubleshooting refrigerant flow problems refrigerants and oils HVAC Design and Applications gas components HVAC design control systems and economizers pneumatic controls Refrigeration Equipment Operation design and operation of a cross section of refrigeration equipment including ice machines, reach-ins, walk-ins and display cases control systems for refrigeration equipment HVAC Equipment Operation design and operation of a cross section of residential and commercial HVAC equipment control systems for HVAC equipment Control Systems Wiring electrical schematics wiring controls test sequence of operation Troubleshooting Systems Analysis system problems system components system accessories and control systems Business Education

5 Mathematics Level Four - 8 weeks Enthalpy and Psychrometrics pressure enthalpy diagrams psychrometric charts refrigeration and air conditioning system design and operation Load Calculation and Equipment Selection heat load heat transfer calculations select equipment for these applications Advanced Commercial and Industrial Analysis commercial and industrial design supermarket systems, industrial systems, two stage, ultra low and cascade systems HVAC Variations and Secondary Systems types of HVAC systems and systems using secondary refrigerants air quality and filters advanced control systems PLC controllers Refrigeration Service Applications service and troubleshoot refrigeration systems calibrate refrigerant control systems HVAC Service Applications service and troubleshoot HVAC systems special application systems and air handlers Control Systems Applications design installation calibration and testing Business Education Mathematics