#3 EPA 608 CORE

How should refrigerant blends be charged?

• As a vapor.

• At very high temperatures.

• As a liquid.

• The same as any other refrigerant.

What is the strongest evidence that HCFCs are in the stratosphere?

• Chemical reactions predict there should be HCFCs in the upper atmosphere.

• Measurement of chlorine in air samples from the lower atmosphere.

• Measurement of HCFCs in air samples from the stratosphere.

• Satellite measurements of light passing through the atmosphere.

What will the capacity of a vacuum pump and its suction line size determine?

• Where the vacuum hose is connected to the system.

• The length of dehydration time.

• The type of refrigerant that can be charged.

• The viscosity of the oil that can be used in the system.

What is the Montreal Protocol?

• An international treaty that addresses ozone-depleting substances and their alternatives.

• A test for energy efficiency adopted by the Canadian government.

• A procedure for measuring levels of CFCs in the atmosphere.

• A test for ozone concentration.

Which of the following is illegal?

• Use of CFC, HCFC or HFC refrigerants.

• Manufacturing or importing HFO refrigerants into the U.S.

• Knowingly release CFC, HCFC or HFC refrigerants during the service, maintenance, repair or disposal of appliances.

• Selling recovered refrigerant to a reclaimer.

In which component of a system does the refrigerant change from a high-pressure vapor to a high­ pressure liquid?

• Receiver

• Metering device

• Accumulator

• Condenser

In addition to fines and being required to appear in court, what penalty can be imposed on service technicians who violate Clean Air Act provisions?

• They may lose their certification.

• They may have equipment confiscated.

• They may be required to take mandatory training.

• They may be required to pass an online test.

Portable refillable tanks or containers used to ship CFC or HCFC refrigerants obtained with recovery equipment must meet what standard(s)?

• Department of Transportation

• Community Right to Know Act

• Underwriters Laboratories

• All of the above

In what state does refrigerant enter the compressor of a refrigeration system?

• Liquid

• Sub-cooled liquid

• Sub-cooled vapor

• Superheated vapor

Under EPA's regulations, what standard must reclaimed refrigerant meet before it can be resold?

• AHRI 700

• EPA 700

• ASHRAE 700

• UL 700