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EPA Certification DUNDLED Exams 2023 with 100% correct answers
EPA Certification Exam 2023 with 100% correct answers EPA 608 Certification exam 2023 with 100% correct answers
[Show more]EPA Certification Exam 2023 with 100% correct answers EPA 608 Certification exam 2023 with 100% correct answers
[Show more]Which Refrigerants contain the most chlorine? 
CFC's 
 
 
 
As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the atmosphere? 
July 1, 1992 
 
 
 
Which Refrigerants have the lowest zone depletion potential? 
HFC's 
 
 
 
The molecule found in CFC...
Preview 2 out of 10 pages
Add to cartWhich Refrigerants contain the most chlorine? 
CFC's 
 
 
 
As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the atmosphere? 
July 1, 1992 
 
 
 
Which Refrigerants have the lowest zone depletion potential? 
HFC's 
 
 
 
The molecule found in CFC...
As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? 
July 1, 1992. 
 
 
 
What is the ozone layer and why is it important to us on Earth? 
Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that exte...
Preview 1 out of 2 pages
Add to cartAs of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? 
July 1, 1992. 
 
 
 
What is the ozone layer and why is it important to us on Earth? 
Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that exte...
What does Section 608 of the Federal Clean Air Act state? 
Requires anyone who handles refrigerants to be certified in proper refrigerant handling techniques. 
 
 
 
What is the ozone layer composed if? 
3 oxygen atoms bonded together 
 
 
 
Where is the ozone layer? 
10-30 miles above sea level, in...
Preview 1 out of 2 pages
Add to cartWhat does Section 608 of the Federal Clean Air Act state? 
Requires anyone who handles refrigerants to be certified in proper refrigerant handling techniques. 
 
 
 
What is the ozone layer composed if? 
3 oxygen atoms bonded together 
 
 
 
Where is the ozone layer? 
10-30 miles above sea level, in...
As of what date did it become unlawful to release Class 1 and Class II 
refrigerants to the atmosphere? 
a. July 1, 1992 
b. July 1, 1993 
c. November 14, 1994 
d. January 1, 1996 
a. July 1, 1992 
 
 
 
What is the ozone layer and why is it important to us on Earth? 
a. Thin layer of R-22 in the at...
Preview 4 out of 79 pages
Add to cartAs of what date did it become unlawful to release Class 1 and Class II 
refrigerants to the atmosphere? 
a. July 1, 1992 
b. July 1, 1993 
c. November 14, 1994 
d. January 1, 1996 
a. July 1, 1992 
 
 
 
What is the ozone layer and why is it important to us on Earth? 
a. Thin layer of R-22 in the at...
Ozone 
Three oxygen atoms bonded together 
 
 
 
Ozone Layer 
A layer in the stratosphere 10-30 miles from sea level that protects the Earth from ultraviolet radiation 
 
 
 
Stratosphere 
A section of our atmosphere which contains the ozone layer 
 
 
 
Oxygen 
Two oxygen atoms bonded together 
 
 ...
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Add to cartOzone 
Three oxygen atoms bonded together 
 
 
 
Ozone Layer 
A layer in the stratosphere 10-30 miles from sea level that protects the Earth from ultraviolet radiation 
 
 
 
Stratosphere 
A section of our atmosphere which contains the ozone layer 
 
 
 
Oxygen 
Two oxygen atoms bonded together 
 
 ...
What are the typical uses of the center port of gauge set? 
Used during evacuation, charging and recovery procedures. 
 
 
 
What color are the gauges on a manifold gauge set? 
Low pressure is blue, High pressure is red. 
 
 
 
What are the typical ranges of pressure measurements used on the gauges ...
Preview 3 out of 28 pages
Add to cartWhat are the typical uses of the center port of gauge set? 
Used during evacuation, charging and recovery procedures. 
 
 
 
What color are the gauges on a manifold gauge set? 
Low pressure is blue, High pressure is red. 
 
 
 
What are the typical ranges of pressure measurements used on the gauges ...
Ozone stratosphere above the earth consists of molecules containing... 
3 oxygen atoms (O3) 
 
 
 
The oxygen we breathe contains how many atoms in each molecule? 
two atoms (O2) 
 
 
 
The ozone layer consists of ozone in the stratosphere at an altitude of between __________above the earth 
7 and 2...
Preview 3 out of 16 pages
Add to cartOzone stratosphere above the earth consists of molecules containing... 
3 oxygen atoms (O3) 
 
 
 
The oxygen we breathe contains how many atoms in each molecule? 
two atoms (O2) 
 
 
 
The ozone layer consists of ozone in the stratosphere at an altitude of between __________above the earth 
7 and 2...
When a new system has been assembled, the first thing to do is? 
Pressurize the system with an inert gas & leak check. 
 
 
 
After installation of a field-piped R-410A split heat pulp, the unit should first be? 
Pressurized with nitrogen then leak checked. 
 
 
 
The EPA regulations require that an...
Preview 2 out of 7 pages
Add to cartWhen a new system has been assembled, the first thing to do is? 
Pressurize the system with an inert gas & leak check. 
 
 
 
After installation of a field-piped R-410A split heat pulp, the unit should first be? 
Pressurized with nitrogen then leak checked. 
 
 
 
The EPA regulations require that an...
How many types of HVAC certifications are there? 
There are 4 types. 
 
 
 
What does a metering device do? 
The metering device causes a reduction in pressure, and therefore a reduction in saturation temperature. 
 
 
 
What is absorbed in the evaporator? 
Heat is absorbed in the evaporator. 
 
 
 ...
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Add to cartHow many types of HVAC certifications are there? 
There are 4 types. 
 
 
 
What does a metering device do? 
The metering device causes a reduction in pressure, and therefore a reduction in saturation temperature. 
 
 
 
What is absorbed in the evaporator? 
Heat is absorbed in the evaporator. 
 
 
 ...
What is a blend of two or more components who's equilibrium vapor phase & liquid phase compositions are the same at a given pressure? 
Azeotrope 
 
 
 
This is a halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine, and bromine 
Halocarbon 
 
 
 
Chlorofluorocarb...
Preview 2 out of 10 pages
Add to cartWhat is a blend of two or more components who's equilibrium vapor phase & liquid phase compositions are the same at a given pressure? 
Azeotrope 
 
 
 
This is a halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine, and bromine 
Halocarbon 
 
 
 
Chlorofluorocarb...
Refrigeration technicians who violate the Clean Air Act can: - 
Lose their EPA certification, be fined, be required to appear in Federal court. 
 
 
 
After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - 
recovery and recycling. 
 
 
 
Refrigerant t...
Preview 2 out of 15 pages
Add to cartRefrigeration technicians who violate the Clean Air Act can: - 
Lose their EPA certification, be fined, be required to appear in Federal court. 
 
 
 
After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - 
recovery and recycling. 
 
 
 
Refrigerant t...
Technicians who perform sealed system service on small appliances must have; 
Type I or universal certification 
 
 
 
A small appliance is defined by EPA as; 
Appliances manufactured, charged, and hermetically sealed in a factory with 5 lbs or less of refrigerant 
 
 
 
Type I Certification is requ...
Preview 1 out of 3 pages
Add to cartTechnicians who perform sealed system service on small appliances must have; 
Type I or universal certification 
 
 
 
A small appliance is defined by EPA as; 
Appliances manufactured, charged, and hermetically sealed in a factory with 5 lbs or less of refrigerant 
 
 
 
Type I Certification is requ...
Azeotrope 
A blend of two or more components who's equilibrium vapor phase and liquid phase compositions Are the same at a given pressure 
 
 
 
Halocarbon 
A halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine and bromine 
 
 
 
Chlorine, Fluorine, carbon 
Chlo...
Preview 2 out of 10 pages
Add to cartAzeotrope 
A blend of two or more components who's equilibrium vapor phase and liquid phase compositions Are the same at a given pressure 
 
 
 
Halocarbon 
A halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine and bromine 
 
 
 
Chlorine, Fluorine, carbon 
Chlo...
When moisture exists in an operating system, what is most likely to occur? 
Acid will form. 
 
 
 
What factor(s) affects the speed of evacuation? 
1) The size of the equipment being evacuated. 
 
2)The ambient temperature. 
 
3) The amount of moisture in the system 
 
 
 
A system is considered deh...
Preview 1 out of 3 pages
Add to cartWhen moisture exists in an operating system, what is most likely to occur? 
Acid will form. 
 
 
 
What factor(s) affects the speed of evacuation? 
1) The size of the equipment being evacuated. 
 
2)The ambient temperature. 
 
3) The amount of moisture in the system 
 
 
 
A system is considered deh...
July 1, 1992 
As of what date did it become unlawful to release class 1 and class 2 refrigerants to the atmosphere? 
 
 
 
R-12 
What refrigerant is a Chloro-fluoro-carbons (CFC)? 
 
 
 
R1-2-3 and R-22 
Which refrigerants are Hydro-chlorofluoro-carbons (HCFC) ? 
 
 
 
Chlorine monoxide 
The molecul...
Preview 2 out of 5 pages
Add to cartJuly 1, 1992 
As of what date did it become unlawful to release class 1 and class 2 refrigerants to the atmosphere? 
 
 
 
R-12 
What refrigerant is a Chloro-fluoro-carbons (CFC)? 
 
 
 
R1-2-3 and R-22 
Which refrigerants are Hydro-chlorofluoro-carbons (HCFC) ? 
 
 
 
Chlorine monoxide 
The molecul...
Reusable refrigerant containers under high-pressure must be hydrostatically tested how often? 
5 years 
 
 
 
How much can a person be fined per day per violation for knowingly releasing a regulated substance that violates the Clean Air Act? 
$44,539 
 
 
 
HCFCs contain 
Hydrogen, Chlorine, Fluorin...
Preview 2 out of 10 pages
Add to cartReusable refrigerant containers under high-pressure must be hydrostatically tested how often? 
5 years 
 
 
 
How much can a person be fined per day per violation for knowingly releasing a regulated substance that violates the Clean Air Act? 
$44,539 
 
 
 
HCFCs contain 
Hydrogen, Chlorine, Fluorin...
A violation of the Clean Air Act, including improper record keeping, is subject to a penalty of a fine of up to _____ per day per violation: 
$37,500 
 
 
 
The ____connects the evaporator to the compressor in a refrigerant system: 
Suction Line 
 
 
 
It is to be ensured that the refrigerant recove...
Preview 4 out of 48 pages
Add to cartA violation of the Clean Air Act, including improper record keeping, is subject to a penalty of a fine of up to _____ per day per violation: 
$37,500 
 
 
 
The ____connects the evaporator to the compressor in a refrigerant system: 
Suction Line 
 
 
 
It is to be ensured that the refrigerant recove...
the state of the refrigerant entering the metering device is? 
A subcooled high pressure liquid. 
 
 
 
what type of refrigerant is used in VERY high-pressure appliances? 
R-503 
 
 
 
what type of refrigerant is used in MEDIUM pressure appliances? 
R-500 
 
 
 
what type of refrigerant is used in H...
Preview 2 out of 14 pages
Add to cartthe state of the refrigerant entering the metering device is? 
A subcooled high pressure liquid. 
 
 
 
what type of refrigerant is used in VERY high-pressure appliances? 
R-503 
 
 
 
what type of refrigerant is used in MEDIUM pressure appliances? 
R-500 
 
 
 
what type of refrigerant is used in H...
If a leaking appliance with a regulated refrigerant is not going to be repaired, it must be; 
A retrofitted or retired within 3 months. 
B retrofitted or retired within 12 months. 
C replaced within 3 months. 
D replaced within 12 months. 
B 
retrofitted or retired within 12 months. 
 
 
 
A high-pr...
Preview 2 out of 7 pages
Add to cartIf a leaking appliance with a regulated refrigerant is not going to be repaired, it must be; 
A retrofitted or retired within 3 months. 
B retrofitted or retired within 12 months. 
C replaced within 3 months. 
D replaced within 12 months. 
B 
retrofitted or retired within 12 months. 
 
 
 
A high-pr...
Industrial process and refrigeration units with a 50 pound charge or more with an annualized leak rate of _____ or more must have leaks repaired. 
35 
 
 
 
Unless plans are made to replace a system exceeding the maximum leak, repairs must be made in; 
30 days 
 
 
 
Refrigerants CFC R-12, HCFC R-22...
Preview 1 out of 3 pages
Add to cartIndustrial process and refrigeration units with a 50 pound charge or more with an annualized leak rate of _____ or more must have leaks repaired. 
35 
 
 
 
Unless plans are made to replace a system exceeding the maximum leak, repairs must be made in; 
30 days 
 
 
 
Refrigerants CFC R-12, HCFC R-22...
Recovery equipemnt used for the service or repair of small appliances must be certified by an EPA approved lab if the recovery equipment was made after 
November 15, 1993 
 
 
 
Recovery devices made before 11-15-93 and are used for recovery of refrigerant from small appliances must be capable of: 
...
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Add to cartRecovery equipemnt used for the service or repair of small appliances must be certified by an EPA approved lab if the recovery equipment was made after 
November 15, 1993 
 
 
 
Recovery devices made before 11-15-93 and are used for recovery of refrigerant from small appliances must be capable of: 
...
The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. 
Restricted to technicians who are EPA certified and refrigerant recovery 
 
 
 
A small Pliance is defined as a system that is 
Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 pounds or less 
...
Preview 1 out of 4 pages
Add to cartThe sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. 
Restricted to technicians who are EPA certified and refrigerant recovery 
 
 
 
A small Pliance is defined as a system that is 
Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 pounds or less 
...
The maximum test pressure for leak testing a low-pressure centrifugal chiller is 
10 psig 
 
 
 
Excessive operation of a purge system means 
The system has a leak on the sub-ambient pressure side of the system 
 
 
 
For a commercial refrigeration system with a charge of 50 pounds or more refrigera...
Preview 2 out of 5 pages
Add to cartThe maximum test pressure for leak testing a low-pressure centrifugal chiller is 
10 psig 
 
 
 
Excessive operation of a purge system means 
The system has a leak on the sub-ambient pressure side of the system 
 
 
 
For a commercial refrigeration system with a charge of 50 pounds or more refrigera...
To process refrigerant to a level that is equal to new product specifications as 
Reclaiming 
 
 
 
The low side test pressure data plate value should be used by a technician to determine a safe pressure for 
Leak testing 
 
 
 
Silicone elastomers are not compatible with what refrigerant 
HFC 
 
 
...
Preview 2 out of 6 pages
Add to cartTo process refrigerant to a level that is equal to new product specifications as 
Reclaiming 
 
 
 
The low side test pressure data plate value should be used by a technician to determine a safe pressure for 
Leak testing 
 
 
 
Silicone elastomers are not compatible with what refrigerant 
HFC 
 
 
...
What does ozone in the stratosphere above the earth consist of? 
Molecules containing 3 oxygen atoms 
 
 
 
Which of the following refrigerants has the lowest global warming potential? 
R-600a 
 
 
 
Which of the following gases is used as the baseline measurement for global warming potential? 
Carb...
Preview 2 out of 10 pages
Add to cartWhat does ozone in the stratosphere above the earth consist of? 
Molecules containing 3 oxygen atoms 
 
 
 
Which of the following refrigerants has the lowest global warming potential? 
R-600a 
 
 
 
Which of the following gases is used as the baseline measurement for global warming potential? 
Carb...
On low pressure chillers, moisture typically enters the refrigerant system through 
air leaks from areas with gaskets or fittings 
 
 
 
The maximum test pressure for leak testing a low pressure centrifugal is: 
10 psig 
 
 
 
Leak test and repair the chiller to reduce refrigerant loss from a pruge ...
Preview 2 out of 13 pages
Add to cartOn low pressure chillers, moisture typically enters the refrigerant system through 
air leaks from areas with gaskets or fittings 
 
 
 
The maximum test pressure for leak testing a low pressure centrifugal is: 
10 psig 
 
 
 
Leak test and repair the chiller to reduce refrigerant loss from a pruge ...
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