EPA Section 608 CORE Certification Test Sample Study Questions

Recovery equipment that relies upon the compressor in the system would be considered:

Of the items listed below which are violations of the clean air act?

What is one of the most serious results of damage to the ozone layer?

An example of an HFC refrigerant is:

Which refrigerant(s) must be recovered before opening a system or disposing of a system?

Which refrigerant is an HCFC?

HFC refrigerants contain

Which of the following gases help form the earths protective shield?

Which safety precaution(s) should always be followed:

A cylinder with a gray body and the yellow top indicates that the cylinder is designed to hold:

Which of the following is an approved “drop-in” service replacement for R – 12?

Which refrigerant is an HCFC?

To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least:

The over-evacuation of a system:

Which of the following refrigerant releases is a violation of the EPA prohibition on venting?

EPA requires technician to demonstrate proper recovering & recycling refrigerant. Failure to demonstrate competency can

In a vapor compression refrigeration system, cooling occurs when:

A compound pressure gauge, typically used on the low side of the system, measures pressure in:

Systems charged with R-410A should be leak checked with:

A system is dehydrated to:

The high pressure gauge on service manifolds that has a continuous scale, usually calibrated to read from:

According to the EPA, a leak detection method is considered the most effective for locating a small leak

According to EPA, which type of refrigerant will not contribute to global warning?

To determine the maximum allowable pressure to use when checking a system, check

It is important not to mix different refrigerant in the same container because:

Which gases would cause the LEAST damage to the environment during a leak check?

Whenever dry nitrogen from a portable cylinder is connected to a system, what item is most important in safety?

Manifold gauge sets are often color-coded, when this is done the high-pressure gauge is color-coded:

Refrigerant migrates to the compressor crank case because of a difference in ____ between the refrigerant and the oil.

Systems charged with R– 134a should be leak checked with:

Reusable refrigerant containers under any pressure above 15 PSIG, Must be hydrostatically tested and date stamped every:

Disposable refrigerant containers are used for___ refrigerant.

Which atom of the CFC molecule causes ozone depletion?

When using recovery unit, The fill level of the recovery tank can be controlled by:

R – 410A is not a typical blended refrigerant because:

Which type of refrigerant is the most harmful to stratospheric ozone? Refrigerants containing…

In a refrigeration system, high pressure vapor is converted to high pre-sure liquid in the:

An example of an HFC refrigerant is:

Blended refrigerants leak from a system:

Refrigerant cylinders should always be

What effects can ozone depletion have on the environment?

During servicing of a refrigeration system contains R-12, the refrigerant must be:

It is important not to mix R–22 and R-410A refrigerant in the same container because:.

Never overfill refrigerant storage cylinders because:

In general, blended refrigerant should be charged:

To obtain an accurate vacuum readings during system evacuation, the system vacuum gauge should be located:

Each chlorine atom in the stratosphere can destroy _____ ozone molecules.

After 1995, any supplies of CFC refrigerant to service existing units in the USA can only come from:

__refers to the process of cleaning refrigerant by oil separation and single/multi passes through filter which reduce

The proper method of discarding a disposable refrigerant cylinder is to:

CFC refrigerants are so named because they contain the elements:

It has been illegal to vent substitutes for CFC & HCFC refrigerants since:

The Montreal Protocol is:

Personal protective equipment should always be worn when:

Refrigerant cannot be called “reclaimed” unless it:

When evacuating a system, the hoses should be:

Self-contained recovery devices:

A hermetic compressor must never be operated when:

In a refrigeration system, the device that changes a low pressure vapor to a high-pressure vapor is the:

What characteristic of CFC Make them more likely to reach the stratosphere than other compounds with chlorine?

Before you dispose of any system containing a refrigerant, you must:

Type of oil that is most used in stationary air conditioning w/ HFC-410A is

All devices used for refrigerant recovery must:

Refrigerant vapors and mist should not be inhaled because

The recovery of refrigerant is necessary to:

What is the best proof that CFCs are in the stratosphere?

Non-Azeotropic refrigerants leak from a system:

Long hoses between the unit and the recovery machine should not be used because they cause:

Never use an open flame to heat a refrigerant tank because:

Recovery equipment that relies upon the pressure of a refrigerant in an appliance would be considered:

An example of an HCFC refrigerant is:

According to a ASHRAE’s 1992 refrigerant safety classification which of the following designations would be most safest?

HCFC refrigerants:

Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the following in common?

An example of a HFC refrigerant is:

Even though R-22 is considered non-toxic, it:

When transporting cylinders containing use refrigerant, the DOT requires that you:

When using nitrogen to pressurize a system, you should always:

Ozone depletion potential, or “ODP”, is:

Techs that receive a passing grade on the type II exam

Which refrigerant is an HCFC?

Award of up to what amount paid to a person supplying information that leads to a penalty against tech who is venting?

Manifold gauge sets are often color-coded, when this is done, the low pressure gauge is color-coded:

Of the refrigerants listed below, which has the lowest of depletion potential?

What statement is true about an azeotropic refrigerant mixture?

Which of the following human health effects could result from an increase in ultraviolet radiation?

The ozone layer protects the earth from:

A system is considered dehydrated when:

Never use oxygen or compressed air to pressurize a system because

Equipment covered by EPA regulations include:

___ is the process that returns refrigerant to new-product specifications and that requires chemical analysis.

Refrigerant that is covered can be returned to Colon

The evacuation of a system is a method of:

Refrigeration technicians who violate the clean air act can

According to EPA regulations, which procedure is not an approved technique for system cleanup after a burn out?

Which chemicals are controlled by the Montreal protocol?

Which refrigerant contains an HCFC?

When using with any solvents, cleaner, chemical or refrigerant, you should review:

A ternary refrigerant blend is a ___ part mixture.

Data shows that chlorine in the stratosphere comes from CFCs rather than natural sources such as volcanoes because