Automotive Heating and Air-Conditioning Fundamentals (II) Hours 30 

In this course the student will learn servicing procedures and how to operate testing and servicing equipment. Students will learn to evacuate and recharge air-conditioning systems using the proper refrigerant. Students will learn to evaluate and determine necessary action for compressor and clutch assemblies, and how to perform the replacement of these parts. Students will learn to perform component replacement, such as the receiver drier, expansion valve, orifice tube, hose assemblies and o-rings. Students will learn to trouble shoot heating and air-conditioning systems operation and how to evaluate climate control systems. This course covers both the electrical and vacuum controls.


Competencies:

A/C System Diagnosis and Repair
Select oil type; measure, and add oil to the A/C system as needed. 

Refrigeration System Component Diagnosis and Repair
Compressor and Clutch
Inspect, test, and replace A/C compressor clutch components or assembly. 
Remove and replace A/C compressor and mountings

Evaporator, Condenser, and Related Components
Determine need for A/C system filter; perform necessary action
Remove and inspect A/C system mufflers, hoses, lines, fittings, o-rings, seals, and service valves; perform necessary action
Remove and install receiver/drier or accumulator/drier
Remove and install expansion valve or orifice (expansion) tube

Heating, Ventilation, and Engine Cooling Systems Diagnosis and Repair
Inspect, test, and replace thermostat and housing
Inspect and test fan, fan clutch (electrical and mechanical), fan shroud, and air dams; perform necessary action
Inspect and test electrical fan control system and circuits
Inspect and test heater control valve(s); perform necessary action

Operating Systems and Related Controls Diagnosis and Repair
Inspect and test A/C-heater blower, motors, resistors, switches, relays, wiring, and protection devices; perform necessary action
Refrigerant Recovery, Recycling, and Handling
Verify correct operation and maintenance of refrigerant handling equipment
Identify (by label application or use of a refrigerant identifier) and recover A/C system refrigerant
Recycle refrigerant
Label and store refrigerant
Test recycled refrigerant for non-condensable gases
Evacuate and charge A/C system