Refrigeration and Air-conditioning Mechanic

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=90 BGCOLOR="#006699" TEXT="#080000" background="0e6785a3.jpg"> <div> <FONT SIZE="5" COLOR="#0000FF" FACE="Arial" >Welcome to Maxself Learning</FONT>     |     <A HREF="index.htm" TARGET="_top" TITLE="Welcome to Maxself Learning"><U>home</U></A></div> <div> <A HREF="truck___coach_technician.htm" TARGET="_top" TITLE="Truck and Coach Technician"><U>Truck and Coach Technician</U></A>   |   <A HREF="heavy_duty_mechanic.htm" TARGET="_top" TITLE="Heavy Duty Mechanic"><U>Heavy Duty Mechanic</U></A>   |   <A HREF="electrician___c___m.htm" TARGET="_top" TITLE="Construction and Maintenance Electrician"><U>Construction and Maintenance Electrician </U></A>   |   <A HREF="plumber.htm" TARGET="_top" TITLE="Plumber"><U>Plumber</U></A>   |   <A HREF="automotive_service_technician.htm" TARGET="_top" TITLE="Automotive Service Technician"><U>Automotive Service Technician</U></A>   |   Refrigeration and Air-conditioning Mechanic   |   <A HREF="industrial_electrician.htm" TARGET="_top" TITLE="Industrial Electrician"><U>Industrial Electrician</U></A>   |   <A HREF="industrial_mechanic_millwright.htm" TARGET="_top" TITLE="Industrial Mechanic Millwright"><U>Industrial Mechanic Millwright</U></A>   |   <A HREF="tool___die_maker.htm" TARGET="_top" TITLE="Tool and Die Maker"><U>Tool and Die Maker</U></A>   |   <A HREF="general_machinist.htm" TARGET="_top" TITLE="General Machinist"><U>General Machinist</U></A></div> <DIV ALIGN="LEFT"></DIV> <div> </div> </td> </tr><tr> <td valign="top" width=210 BGCOLOR="#FFCC66" TEXT="#080000" background="0e7d2b03.jpg"> <bR> </td> <td valign="top" height=390 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <I>Refrigeration and Air-conditioning Mechanic</I></div> <div> Cool training for hot careers!</div> <bR> <div> Controlling indoor climates should always be important in private homes, businesses, industrial plants, schools, medical buildings, and government facilities. People rely on heating, air conditioning, and ventilation systems to operate smoothly, regardless of the economy's health. No wonder the outlook for skilled, experienced professionals in HVAC careers appears bright! </div> <bR> <div> Do you enjoy working with your hands? Do you have a good "Mechanical sense"? If so, you could do well in The Professional Heating and Air Conditioning Program. It's an ideal way to learn the fundamentals of servicing and repairing heating, ventilation, air conditioning, and cooling systems.</div> <bR> <div> Lesson 1: HAND TOOLS AND FASTENERS. Essential HVAC hand tools?atheir uses and advantages; screw types and sizes; using bolts, nuts, washers, anchors, setscrews, bind rivets, and threaded rods; caring for tools.</div> <bR> <div> Lesson 2: TUBING AND PIPE. Types and sizes of copper tubing and fittings; cutting, bending, and flaring; swaged and flared connections; using steel and plastic pipe; pipe fittings and tools; repairing pipe leaks; how to solvent-weld rigid plastic pipe.</div> <bR> <div> Lesson 3: SOLDERING, BRAZING, AND FLAME-CUTTING. Soldering vs. brazing; selecting proper alloys and fluxes; soldering safely and correctly; air-fuel torches and gas cylinders; connecting and operating pressure regulators; air-fuel brazing and the brazing process; selecting appropriate cylinders and torches; oxyacetylene equipment for brazing and cutting metal; safety procedures.</div> <bR> <div> Lesson 4: MATH FOR TECHNICIANS. Place values; fractions; decimals; two- and three-dimensional linear measurements; Fahrenheit vs. Celsius temperature; area; volume; computing percentages easily.</div> <bR> <div> Lesson 5: THERMODYNAMICS, TEMPERATURE, AND PRESSURE. How heat is transferred; sensible, specific, and latent heat; BTU?¡¥s; saturated conditions; superheat; subcooling; measuring refrigeration and pressure; the compound gauge; Boyle?¡¥s and Charles?¡¥ Laws.</div> <bR> <div> Lesson 6: THE REFRIGERATION SYSTEM CYCLE. The refrigeration cycle; domestic and commercial refrigeration system components; valves; variations in accessory components; the gauge manifold.</div> <bR> <div> Lesson 7: REFRIGERANTS AND THEIR RECOVERY. Refrigerant types and applications; using temperature-pressure charts; determining superheat; pumping ratio problems; safety precautions; ozone layer depletion; complying with the Federal Clean Air Act; recovery and recycling methods.</div> <bR> <div> Lesson 8: REFRIGERANT BLENDS AND TROUBLESHOOTING. Fractionation; bubble point; dew point; temperature glide; interpreting a temperature-pressure card for blends; selecting lubricants; performing a system retrofit to a blend; refrigerant contamination problems; detecting leaks; using refrigerant cylinders; correcting pressure problems; charging a system.</div> <bR> <div> Lesson 9: REFRIGERANT CONTROLS. Installing and adjusting automatic and thermostatic expansion valves and capillary tubes; when and how to use equalized valves; multiplexed evaporator operations.</div> <bR> <div> Lesson 10: VALVES; TROUBLESHOOTING FLOW CONTROLS. Hand and check valves; installing and troubleshooting solenoid, EPR, and CPR valves; how to install and adjust head pressure control and hot gas bypass valves; diagnosing and repairing AEV and TEV system problems; correcting EPR and CPR valve problems.</div> <bR> <div> Lesson 11: COMPRESSORS AND THEIR LUBRICATION. Compressor types and designs; compliant scroll compressors and disc-type valve designs; reciprocating compressors; aligning pulleys and flywheels; how to select, size, and replace V-belts; adding and removing oil; controlling liquid migration; vibration eliminators; the compressor data plate.</div> <bR> <div> Lesson 12: WATER CHILLERS. Vapor compression, centrifugal, low pressure, and absorption chiller operation; open- and closed-loop systems; ammonia and lithium bromide absorption cycles; refrigerant leaks.</div> <bR> <div> Lesson 13: BASIC ELECTRICITY. Using the voltmeter, ammeter, and ohmmeter; Ohm?¡¥s Law; open and short circuits; wire sizes; using the right insulation for conductors; connecting loads and switches; using and installing plugs, receptacles, and switches; using portable power tools.</div> <bR> <div> Lesson 14: ELECTRICAL CIRCUITS AND MOTORS. How electrical power is transmitted; transformers explained; overcurrent; circuit protection devices; ground fault circuit interrupters; single- and three-phase motors; multi-speed motors; dual-voltage motors; induction motors; motor connections; capacitors; transformers; compressor terminals; fans and blowers; motor bearings.</div> <bR> <div> Lesson 15. SOLENOIDS, RELAYS, AND MOTOR CONTROLS. Electromagnetic control devices; solenoid valves; relays; connecting and troubleshooting contactors and line starters; reading diagrams; adjusting and troubleshooting motor controls and thermostats; adjusting pumpdown cycles and safety controls.</div> <bR> <div> Lesson 16: DEFROST CYCLES. Installing and adjusting time clocks; defrost cycles; connecting and troubleshooting defrost terminator thermostats; temperature and pressure termination adjustment.</div> <bR> <div> Lesson 17: GAS AND OIL HEAT WITH AIR CONDITIONING. Gas heat system components; adjusting burner flames, fan/limit controls, and heat anticipators; wiring heating and cooling system components; combustion; setting the electrodes; the primary control; the flame safeguard; stack control; oil furnace problems.</div> <bR> <div> Lesson 18: ELECTRIC HEAT WITH AIR CONDITIONING AND HEAT PUMPS. Components of electric heating systems; wiring connections; two-stage heating systems; isolating low-voltage control circuits from line-voltage circuits; how heat pumps work.</div> <bR> <div> Lesson 19: CUSTOMER RELATIONS AND YOUR CAREER. Striving for excellence in customer service; secrets of establishing good customer relations; learning and using customers?¡¥ names; shaking hands; your appearance; how to begin and end service calls; certification and licensing requirements for technicians.</div> <bR> <div> Refrigeration and Air-conditioning Mechanic</div> <div> Trades Qualification and Apprenticeship Act - Compulsory Trade     NOC 7313</div> <bR> <div> Description</div> <div>     * Read and interpret blueprints, drawings or other specifications</div> <div>     * Measure and lay out reference points for installation</div> <div>     * Assemble and install refrigeration or air conditioning components such as motors, controls, gauges, valves, circulating pumps, condensers, humidifiers, evaporators and compressors using hand and power tools</div> <div>     * Measure and cut piping, and connect piping using welding and brazing equipment</div> <div>     * Install, troubleshoot and overhaul entire heating, ventilation, air handling, refrigeration and air conditioning systems</div> <div>     * Start up system and test for leaks using testing devices</div> <div>     * Recharge system with refrigerant, check and test regulators, calibrate system and perform routine maintenance or servicing</div> <div>     * Repair and replace parts and components for entire refrigeration, air conditioning, ventilation or heat pump systems</div> <bR> <div> Personal Qualities</div> <div>     * You may be required to work in cramped areas or on roof tops</div> <div>     * You may work outside at various times of the year</div> <div>     * You will climb up and down ladders</div> <div>     * You have the stamina to be on your feet for long periods of time</div> <div>     * You are safety conscious</div> <div>     * You need to be in good physical condition to carry materials</div> <bR> <div> Career Opportunities</div> <div>     * Work is performed in restaurants, supermarkets, hospitals or anywhere cooling systems are required</div> <div>     * Small, medium and large companies and contractors employ refrigeration and air conditioning mechanics on a variety of projects in the residential, commercial and industrial sectors</div> <div>     * A significant portion of journeypersons are employed as unionized workers</div> <div>     * Many refrigeration and air conditioning mechanics have their own business</div> <div>     * Refrigeration and air conditioning is a Red Seal Trade</div> <bR> <div> Educational/Training Requirements</div> <div>     * The minimum entry for apprenticeship is Grade 10, however many employers and unions want at least Grade 12</div> <div>     * Completion of a 9,000 hour apprenticeship program is required</div> <div>     * Refrigeration and air conditioning mechanic is a compulsory trade</div> <bR> <div> Potential Earnings</div> <div>     * Apprentices progress initially from 40% to 80% of journeyperson's wages over time</div> <div>     * Journeyperson wages range from $15.00 to $32.00 an hour, excluding overtime</div> <bR> <div> Prospects For Employment</div> <div>     * Employment is expected to grow about as fast as the average for all occupations through the year 2007</div> <div>     * Employment opportunities are linked to the economy and are somewhat cyclical with spring and summer being high demand times</div> <bR> <div> Additional Information</div> <div> United Association of Plumbers, Steamfitters and Pipe Welders:</div> <div> <A HREF="http://www.ua.org" TARGET="_top" TITLE="http://www.ua.org"><U>http://www.ua.org</U></A></div> <bR> <div> HVAC Mechanic:</div> <div> <A HREF="http://www.hvacmechanic.com" TARGET="_top" TITLE="http://www.hvacmechanic.com"><U>http://www.hvacmechanic.com</U></A></div> <bR> <div> Apprenticeship Subject Pathways:</div> <div> <A HREF="http://www.edu.gov.on.ca/eng/training/apprenticeship/skills/pathwaye.pdf" TARGET="_top" TITLE="http://www.edu.gov.on.ca/eng/training/ap"><U>http://www.edu.gov.on.ca/eng/training/apprenticeship/skills/pathwaye.pdf</U></A></div> <bR> <div> National Occupational Classification:</div> <div> <A HREF="http://www23.hrdc-drhc.gc.ca/2001/e/groups/7313.shtml" TARGET="_top" TITLE="http://www23.hrdc-drhc.gc.ca/2001/e/grou"><U>http://www23.hrdc-drhc.gc.ca/2001/e/groups/7313.shtml</U></A></div> <bR> <bR> <bR> <div> Made with the Trades:</div> <div> http://www.madewiththetrades.com/field/fieldmain.htm</div> <bR> <div> Ontario Construction Secretariat:</div> <div> www.iciconstruction.com</div> </td> </tr></table></body>