Which engine driven device compresses refrigerant gas and pumps it through the air conditioning system?

• condenser

• A/C lines

• receiver/Dryer

• compressor

- an A/C system component into which high-pressure liquid refrigerant flows and is temporarily stored and dehydrated, usually located between the condenser outlet and expansion valve.

• compressor

• receiver/dryer

• accumulator

• evaporator

- a chemical compound used in an A/C system to remove heat from the evaporator and transfer it to the condenser.

• refrigerant

• coolant

• hydraulic oil

• anti-freeze

- any of the various designs of fittings that allow service tools such as manifold gauges to be attached to an A/C system.

• A/C lines

• valve stem

• service port

• receiver/dryer

- to remove refrigerant from an A/C system and store it temporarily.

• refrigerant recovery

• coolant recovery

• recharge

• vacuum

Which of these is NOT a refrigerant used in automotive A/C sytems?

• R1234yf

• R12

• R134a

• RUOK

- a heat exchanger, in which low-pressure refrigerant flows and changes state, absorbing heat from the surrounding air and cools the passenger compartment.

• compressor

• condenser

• receiver/dryer

• evaporator

a device, similar to a radiator, in which the refrigerant loses heat and changes state from a high-pressure gas to a high-pressure liquid as it dissipates heat to the surrounding air.

• condenser

• compressor

• evaporator

• radiator

a valve that controls the flow of refrigerant from a high pressure area to a low pressure area

• service port

• expansion valve

• A/C lines

• evaporator

Why must refrigerant be recovered from the A/C system before any A/C parts are replaced?

• refrigerant can cause personal injury

• refrigerant is under pressure

• refrigerant can be recycled

• All of these

• None of these