ACR-206 Final Exam Review

Front

The __________ typically disables the A/C system if pressures fall below 10 psi (69 kPa).

Back

Low-pressure switch

Front

Which of the following is the most common source of abnormal noises arising from the air conditioner? Evaporator, Compressor, Accumulator, Muffler

Back

Compressor

Front

Which of the following is the first step in the diagnostic process for air-conditioning systems? System pressure test, Diagnosis of faults, Performance testing, Check for codes in the computer

Back

Performance testing

Front

A __________ is connected to the air-conditioning refrigerant ports before the performance test begins.

Back

Manifold pressure gauge set

Front

Which of the following works very well for testing discharged systems or for pre-checking for a leak after repairs have been made and before recharging the system? Fluorescent dye, Oxygen, Compressed Air, Nitrogen

Back

Nitrogen

Front

Which of the following is NOT a method of leak testing? Select one:
Vacuum testing,
Electronic leak detection,
Dye testing,
Nitrogen testing

Back

Vacuum testing

Front

Flushing with __________ may be necessary for some components, as this removes moisture-laden oil and some contaminated oil.

Back

Refrigerant gas

Front

If nitrogen testing is the leak test method to be performed, what step would you proceed to next? Select one: Diagnosing, Charging, Evacuation, Reclaiming

Back

Reclaiming

Front

What is the act of removing the refrigerant called?

Back

Reclaiming

Front

The type of refrigerant must remain the same because cross-contamination will create a(n) __________. Select one:

Back

Hazardous substance