EPA 608 Review -- TYPE 2 (English)

What is the purpose of Type II certification in the EPA Section 608 exam?

• To work with low-pressure refrigerants

• To service small appliances

• To work with medium-, high-, or very high-pressure refrigerants

• To repair automotive air conditioning systems

What is required for servicing an appliance with a charge greater than 5 pounds using a refrigerant with a liquid-phase saturation pressure above 45 psia?

• Type I certification

• Type II (or Universal) certification

• Type III certification

• No certification is required

What happens to your EPA Section 608 certification after you are certified?

• It expires after 5 years

• It has no expiration date

• It needs renewal every 2 years

• It is valid only for low-pressure systems

What does Figure II–1 illustrate in the context of the Type II system?

• The electrical wiring of the system

• The state of the refrigerant in the system

• The maintenance schedule of the system

• The installation process of the system

What is the state of the refrigerant when it leaves the liquid receiver in a refrigeration system?

• Low-pressure vapor

• High-pressure liquid

• Low-pressure liquid

• High-pressure vapor

What is the purpose of the filter drier in a refrigeration system?

• To increase the pressure of the refrigerant

• To remove acid, moisture, or particulates

• To convert liquid refrigerant to vapor

• To decrease the temperature of the refrigerant

Where is the moisture-indicating sight glass located in a refrigeration system?

• Directly upstream of the compressor

• Directly upstream of the expansion valve

• Directly downstream of the condenser

• Directly downstream of the evaporator

What does the presence of bubbles in the sight glass indicate about the refrigerant charge?

• The charge is probably high

• The charge is probably low

• The refrigerant is at the correct level

• The system is overcharged

What is the role of an actively controlled expansion valve in a refrigeration system?

• To maintain a preset evaporator exit superheat

• To increase the refrigerant pressure

• To convert vapor to liquid

• To decrease the refrigerant temperature

What is a key advantage of using a fully hermetic compressor?

• It is easier to repair.

• It minimizes leakage.

• It is more expensive.

• It requires more space.