ACR-206 Chapter 59 test

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

• Low-pressure switch

• TXV (thermal expansion valve)

• Heater control

• High-pressure relief

Which of the following is the most common source of abnormal noises arising from the air conditioner?

• Evaporator

• Compressor

• Accumulator

• Muffler

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

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

• Thermometer

• Manifold pressure gauge set

• Micron gauge

• Safety switch

Which of the following is NOT a method of leak testing?

• Vacuum testing

• Electronic leak detection

• Dye testing

• Nitrogen testing

What is the act of removing the refrigerant called?

• Reclaiming

• Flushing

• Recharging

• Recycling

The (a)   is normally inspected when high-side pressures are too high and the system is not cooling well.

• Condenser

• Evaporator

• Heater/evaporator housing

• Drain tube

When cleaning the condenser, what, aside from the shop air, can be used to remove the debris?

• Water hose

• Drain tube

• Oil filter

• Nitrogen purging

Which of the following is used to determine what the high- and low-side pressures should be at a given outside temperature and humidity in a properly functioning system?

• Reclaim/recycle machine

• PT chart

• Anemometer

• Micron gauge

What detector is sometimes called a "sniffer?"

• Dye leak detector

• Carbon monoxide detector

• Electronic leak detector

• Sealant detector