EPA 608 Core Universal All Answers Correct
1. Violations of the Clean Air Act:
- Refrigeration technicians who violate the Clean Air Act can: ✔️ D) all of the above.
2. CFC Supply Post-1995:
- After 1995, any supplies of CFC refrigerant to service existing units in the USA can only come from:
✔️ A) recovery and recycling.
3. Recovered Refrigerant Use:
- Refrigerant that is recovered can be returned to: ✔️ A) the same system or other systems owned by
the same person without restriction.
4. Definition of "Reclaimed":
- Refrigerant cannot be called "reclaimed" unless it: ✔️ B) has been chemically analyzed and the
refrigerant meets the ARI-700 purity standard.
5. EPA Technician Competency Requirements:
- The EPA can require a technician to demonstrate their ability to perform proper procedures for
recovering and/or recycling refrigerant. Failure to demonstrate competency can result in: ✔️ A)
revocation of the technician's certification.
6. CFC Stability and Ozone Depletion:
- The characteristic(s) of CFCs that make them more likely to reach the stratosphere than most other
chlorine-containing compounds is: ✔️ A) Refrigerants that contain chlorine but not hydrogen are so
stable that they do not break down in the lower atmosphere. The chlorine or bromine reacts with
ozone, causing it to change back to oxygen, thus destroying the ozone layer.
7. Dehydrated System Definition:
- A system is considered dehydrated when: ✔️ A) the vacuum indicator shows you have reached and
held the required finished vacuum.
,8. Disposable Refrigerant Containers Use:
- Disposable refrigerant containers are used for ✔️ C) virgin refrigerant.
9. HCFC Example:
- Which refrigerant is an HCFC? ✔️ A) R-124.
10. Azeotropic Refrigerant Mixture:
- What statement is true about an azeotropic refrigerant mixture? ✔️ D) It is a mixture that acts like a
single-component refrigerant over its entire range.
11. CFC and HCFC Recovery Requirement:
- CFCs and HCFCs have which of the following in common? ✔️ D) They must be recovered before
opening or disposing of appliances.
12. Scrapping a Disposable Cylinder:
- To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least: ✔️ A) 0
psig.
13. Manifold Gauge Color Codes:
- Manifold gauge sets are often color coded; when this is done, the high-pressure gauge is color
coded: ✔️ A) red.
14. Charging Blended Refrigerants:
- In general, blended refrigerants should be charged: ✔️ C) as a liquid.
15. Leaking Blended Refrigerants:
- Blended refrigerants leak from a system: ✔️ B) in uneven amounts due to different vapor pressures.
16. Ozone Formation:
, - Which of the following gases helps form the earth's protective shield? ✔️ D) Stratospheric Ozone.
17. Compressor Function in Refrigeration:
- In a refrigeration system, the device that changes low pressure vapor to high pressure vapor is the:
✔️ C) compressor.
18. Sources of Chlorine in the Stratosphere:
- Data shows that chlorine in the stratosphere comes mainly from CFCs rather than from natural
sources such as volcanoes because: ✔️ D) All of the above.
19. Ozone Depletion Cause:
- Which atom of the CFC molecule causes ozone depletion? ✔️ B) chlorine.
20. Ozone Layer Protection:
- The ozone layer protects the earth from: ✔️ C) ultraviolet radiation from the sun.
21. Material Safety Data Sheets:
- When using any solvent, cleaner, chemical, or refrigerant, you should review: ✔️ C) material safety
data sheets.
22. Reward for Reporting Venting:
- An award of up to what amount may be paid to a person supplying information that leads to a
penalty against a technician who is intentionally venting? ✔️ B) $10,000.
23. Montreal Protocol:
- The Montreal Protocol is: ✔️ D) a treaty among nations that controls production of CFCs and HCFCs.
Which refrigerant is an HCFC? ✔️A) R-123
1. Violations of the Clean Air Act:
- Refrigeration technicians who violate the Clean Air Act can: ✔️ D) all of the above.
2. CFC Supply Post-1995:
- After 1995, any supplies of CFC refrigerant to service existing units in the USA can only come from:
✔️ A) recovery and recycling.
3. Recovered Refrigerant Use:
- Refrigerant that is recovered can be returned to: ✔️ A) the same system or other systems owned by
the same person without restriction.
4. Definition of "Reclaimed":
- Refrigerant cannot be called "reclaimed" unless it: ✔️ B) has been chemically analyzed and the
refrigerant meets the ARI-700 purity standard.
5. EPA Technician Competency Requirements:
- The EPA can require a technician to demonstrate their ability to perform proper procedures for
recovering and/or recycling refrigerant. Failure to demonstrate competency can result in: ✔️ A)
revocation of the technician's certification.
6. CFC Stability and Ozone Depletion:
- The characteristic(s) of CFCs that make them more likely to reach the stratosphere than most other
chlorine-containing compounds is: ✔️ A) Refrigerants that contain chlorine but not hydrogen are so
stable that they do not break down in the lower atmosphere. The chlorine or bromine reacts with
ozone, causing it to change back to oxygen, thus destroying the ozone layer.
7. Dehydrated System Definition:
- A system is considered dehydrated when: ✔️ A) the vacuum indicator shows you have reached and
held the required finished vacuum.
,8. Disposable Refrigerant Containers Use:
- Disposable refrigerant containers are used for ✔️ C) virgin refrigerant.
9. HCFC Example:
- Which refrigerant is an HCFC? ✔️ A) R-124.
10. Azeotropic Refrigerant Mixture:
- What statement is true about an azeotropic refrigerant mixture? ✔️ D) It is a mixture that acts like a
single-component refrigerant over its entire range.
11. CFC and HCFC Recovery Requirement:
- CFCs and HCFCs have which of the following in common? ✔️ D) They must be recovered before
opening or disposing of appliances.
12. Scrapping a Disposable Cylinder:
- To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least: ✔️ A) 0
psig.
13. Manifold Gauge Color Codes:
- Manifold gauge sets are often color coded; when this is done, the high-pressure gauge is color
coded: ✔️ A) red.
14. Charging Blended Refrigerants:
- In general, blended refrigerants should be charged: ✔️ C) as a liquid.
15. Leaking Blended Refrigerants:
- Blended refrigerants leak from a system: ✔️ B) in uneven amounts due to different vapor pressures.
16. Ozone Formation:
, - Which of the following gases helps form the earth's protective shield? ✔️ D) Stratospheric Ozone.
17. Compressor Function in Refrigeration:
- In a refrigeration system, the device that changes low pressure vapor to high pressure vapor is the:
✔️ C) compressor.
18. Sources of Chlorine in the Stratosphere:
- Data shows that chlorine in the stratosphere comes mainly from CFCs rather than from natural
sources such as volcanoes because: ✔️ D) All of the above.
19. Ozone Depletion Cause:
- Which atom of the CFC molecule causes ozone depletion? ✔️ B) chlorine.
20. Ozone Layer Protection:
- The ozone layer protects the earth from: ✔️ C) ultraviolet radiation from the sun.
21. Material Safety Data Sheets:
- When using any solvent, cleaner, chemical, or refrigerant, you should review: ✔️ C) material safety
data sheets.
22. Reward for Reporting Venting:
- An award of up to what amount may be paid to a person supplying information that leads to a
penalty against a technician who is intentionally venting? ✔️ B) $10,000.
23. Montreal Protocol:
- The Montreal Protocol is: ✔️ D) a treaty among nations that controls production of CFCs and HCFCs.
Which refrigerant is an HCFC? ✔️A) R-123
