EPA Section 608 Preparatory Manual Review 1

Passing the EPA Section 608 Certification Exam is required for handling and purchasing ________.

• Refrigerators

• Refrigerants

• Air Conditioners

• Heating Systems

Answer explanation

Passing the EPA Section 608 Certification Exam is necessary for handling and purchasing refrigerants, which are substances used in refrigeration and air conditioning systems. The other options do not require this specific certification.

What is the main focus of the 'Core' section in the EPA Section 608 Preparatory Manual?

• Refrigerant Oils

• Stratospheric Ozone Depletion

• Recovery Devices

• Leak Detection

Answer explanation

The 'Core' section primarily addresses Stratospheric Ozone Depletion, emphasizing the importance of understanding how refrigerants impact the ozone layer and the regulations surrounding their use.

What is the purpose of the EPA Section 608 Certification manual?

• To provide a formal refrigeration training course

• To prepare technicians for the EPA Section 608 Certification exam

• To certify technicians in refrigeration

• To update technicians on the latest EPA regulations

Answer explanation

The EPA Section 608 Certification manual is designed to prepare technicians for the EPA Section 608 Certification exam, ensuring they understand the necessary regulations and practices in refrigeration.

Fill in the blank: According to the EPA Section 608 Certification, persons who maintain, service, repair, or dispose of appliances containing more than 5 lbs. of refrigerant must be certified as Type __ technicians.

• I

• II

• III

• Core

Answer explanation

According to the EPA Section 608 Certification, technicians who handle appliances with more than 5 lbs. of refrigerant must be certified as Type II technicians, which specifically covers high-pressure refrigerants.

What is the minimum passing score a technician must achieve on each section of the EPA Section 608 test?

• 60 percent

• 70 percent

• 80 percent

• 90 percent

Answer explanation

The minimum passing score for each section of the EPA Section 608 test is 70 percent. This means a technician must correctly answer at least 70 out of 100 questions to pass.

A technician must achieve a passing score on the Core plus any ______ to receive any certification.

• Section

• Type

• Module

• Exam

Answer explanation

To receive any certification, a technician must pass the Core and any specific Type required for that certification. 'Type' refers to the category of certification, making it the correct choice.

What is the main function of the compressor in the vapor-compression refrigeration cycle?

• To cool the refrigerant

• To compress the refrigerant

• To evaporate the refrigerant

• To condense the refrigerant

Answer explanation

The main function of the compressor in the vapor-compression refrigeration cycle is to compress the refrigerant. This process increases the refrigerant's pressure and temperature, enabling it to circulate through the system effectively.

In the vapor-compression refrigeration cycle, the refrigerant enters the compressor as a low-pressure, low-temperature, superheated vapor and exits as a high-pressure, high-temperature, _______.

• liquid

• gas

• vapor

• solid

Answer explanation

In the vapor-compression refrigeration cycle, the refrigerant exits the compressor as a high-pressure, high-temperature vapor. This is because the compressor increases the pressure and temperature of the refrigerant while keeping it in vapor form.

What is the pressure of R-410A at 70°F according to the Pressure-Temperature Chart?

• 201 PSI

• 121 PSI

• 71 PSI

• 48 PSI

Answer explanation

At 70°F, the pressure of R-410A is 201 PSI according to the Pressure-Temperature Chart. This value is crucial for proper system operation and maintenance.

In refrigeration service, after making a major repair, the appliance should be dehydrated by evacuating the system to a minimum of ____ microns.

• 100

• 500

• 1000

• 1500

Answer explanation

In refrigeration service, after major repairs, it's crucial to evacuate the system to a minimum of 500 microns to ensure all moisture is removed, preventing damage and ensuring efficient operation.