Montgomery College 2019-2020 Catalog 
    
    Oct 28, 2020  
Montgomery College 2019-2020 Catalog [ARCHIVED CATALOG]

Add to Favorites (opens a new window)

AUTO 270 - Automotive HVAC


(R only) CE

Preparation for ASE A-7 Heating and Air Conditioning technician certification exam and EPA 609 Refrigerant Handlers license. Discusses purpose, parts, operation, and failure diagnosis of heating, ventilation, and air conditioning systems. Manual, semiautomatic, and automatic systems are covered. Safe and proper use of refrigerant recovery/recycling/recharging machines is emphasized during the service of systems. Laboratory exercises concentrate on current service and diagnostic procedures. PREREQUISITE(S): A grade of C or better in AUTO 161 . Two hours lecture, three hours laboratory, one hour discussion each week. Formerly AT 270.

4 semester hours

Course Outcomes:
Upon course completion, a student will be able to:

  • Verify customer complaint.
  • Performance Test A/C system, Interpret results.
  • Diagnose noise and vibration -A/C system.
  • Leak test A/C system (electronic, dye).
  • ID / Handle refrigerants in accordance w/EPA 609.
  • Identify capacity and type of compressor oil.
  • Evacuate A/C system.
  • Diagnose protection device interruption of operation.
  • Inspect / Remove / Replace drive belt.
  • Inspect / Remove / Replace A/C compressor clutch assembly.
  • Inspect / Remove / Replace mounts and fittings.
  • Inspect / Remove / Replace condenser.
  • Inspect / Remove / Replace evaporator.
  • Inspect / Remove / Replace accumulator.
  • Inspect / Remove / Replace receiver-drier.
  • Inspect / Remove / Replace lines, hoses and fittings.
  • Inspect / Test / Remove / Replace expansion valve.
  • Remove / Replace orifice tube.
  • Pressure test engine cooling system.
  • Diagnose over-heating/over-cooling.
  • Test / Drain / Flush / Mix / Fill engine coolant.
  • Inspect / Remove / Replace hoses and lines.
  • Inspect / Remove / Replace / Adjust heater control valve.
  • Inspect / Remove / Replace radiator.
  • Inspect / Remove / Replace heater core.
  • Remove / Replace thermostat.
  • Diagnose incorrect operation of compressor clutch.
  • Diagnose incorrect operation of blower motor.
  • Diagnose incorrect operation of radiator cooling fan.
  • Diagnose incorrect operation of manual ventilation system.
  • Diagnose incorrect operation of automatic ventilation system.
  • Diagnose incorrect operation of semi-automatic ventilation system.


Click here for the Fall 2020 Class Schedule

Click here for the Extended Winter 2021 Class Schedule

Click here for the Winter 2021 Class Schedule




Add to Favorites (opens a new window)