The software enables the instructor to insert common faults or malfunctions in electrical or mechanical components in a controlled or random manner.
- Operation and function of: compressor, condenser, evaporator, and
fixed tube orifice
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- Detection and repair of blocked orifice tube, accumulator, and
condenser airflow
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- Understanding the pressure/temperature relationships of
refrigerant
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- Detection and repair of bad engine fan motor, blower speed control
switch, blower motor brushes, and compressor valve
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- Understanding the effects of line restrictions on refrigerant
pressure and temperature
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- Diagnosis and repair of leaks in muffler Scrader valve,
evaporator, and accumulator input connection
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- Operation and function of pressure switches: LPOC, WOT, HPOC &
PS switches
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- Detection and repair of broken contact in WOT switch, closed and
intermittent stick in LPCO switch
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- Detection and repair of dirty contact in mode select switch and
clogged mode select vac switch
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- Detection and correction of opens in blower series resistor, and
relay contacts
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- Detection and repair of loose compressor belt and defective HPCO
diaphragm
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- Detection and repair of stuck defrost door vac motor
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