EPA 608 study material including (Core, type 1, 2 and 3) Verified
Solutions
1. To optimize performance, where should a vacuum pump be placed?
- ✅ It should be connected as far from the pump as possible.
2. What is the benefit of using a high-capacity vacuum pump with short, large-diameter hoses?
- ✅ This combination significantly reduces emissions, minimizes pressure drop, and shortens
evacuation and dehydration times.
3. What is the molecular composition of ozone?
- ✅ Ozone is made up of three oxygen atoms.
4. How many ozone molecules can a single chlorine atom destroy?
- ✅ One chlorine atom can destroy up to 100,000 ozone molecules.
5. What is a notable characteristic of CFCs regarding water?
- ✅ CFCs do not dissolve in water and do not decompose into water-soluble compounds, meaning
they cannot be washed out of the lower atmosphere.
6. What does ODP stand for?
- ✅ Ozone Depletion Potential.
7. What is an azeotrope in the context of refrigerants?
- ✅ It refers to a mixture that behaves like a single chemical, acting as a new refrigerant.
8. Do HFCs have an impact on the ozone layer?
- ✅ HFCs do not harm the ozone in the stratosphere.
, 9. What significant action was taken by the United States regarding CFC production and importation in
1992?
- ✅ The U.S. mandated the cessation of all CFC production and importation after December 31, 1995.
10. According to the Clean Air Act, when were individuals prohibited from venting Class 1 or Class 2
substances?
- ✅ The ban took effect on July 1, 1992.
11. What refrigerants fall under Class 1?
- ✅ CFCs.
12. What refrigerants are classified as Class 2?
- ✅ HCFCs.
13. When did it become illegal to vent substitutes for CFCs and HCFCs?
- ✅ This prohibition began on November 15, 1995.
14. What defines an appliance under these regulations?
- ✅ An appliance is any device that contains and uses a Class 1 or Class 2 refrigerant for household or
commercial purposes.
15. What type of recovery equipment is classified as 'active'?
- ✅ Self-contained recovery equipment.
16. What is 'passive' recovery equipment?
- ✅ System-dependent recovery equipment.
17. Who is allowed to purchase CFC-12 in containers smaller than 20 pounds?
- ✅ Only technicians certified under Section 609.
Solutions
1. To optimize performance, where should a vacuum pump be placed?
- ✅ It should be connected as far from the pump as possible.
2. What is the benefit of using a high-capacity vacuum pump with short, large-diameter hoses?
- ✅ This combination significantly reduces emissions, minimizes pressure drop, and shortens
evacuation and dehydration times.
3. What is the molecular composition of ozone?
- ✅ Ozone is made up of three oxygen atoms.
4. How many ozone molecules can a single chlorine atom destroy?
- ✅ One chlorine atom can destroy up to 100,000 ozone molecules.
5. What is a notable characteristic of CFCs regarding water?
- ✅ CFCs do not dissolve in water and do not decompose into water-soluble compounds, meaning
they cannot be washed out of the lower atmosphere.
6. What does ODP stand for?
- ✅ Ozone Depletion Potential.
7. What is an azeotrope in the context of refrigerants?
- ✅ It refers to a mixture that behaves like a single chemical, acting as a new refrigerant.
8. Do HFCs have an impact on the ozone layer?
- ✅ HFCs do not harm the ozone in the stratosphere.
, 9. What significant action was taken by the United States regarding CFC production and importation in
1992?
- ✅ The U.S. mandated the cessation of all CFC production and importation after December 31, 1995.
10. According to the Clean Air Act, when were individuals prohibited from venting Class 1 or Class 2
substances?
- ✅ The ban took effect on July 1, 1992.
11. What refrigerants fall under Class 1?
- ✅ CFCs.
12. What refrigerants are classified as Class 2?
- ✅ HCFCs.
13. When did it become illegal to vent substitutes for CFCs and HCFCs?
- ✅ This prohibition began on November 15, 1995.
14. What defines an appliance under these regulations?
- ✅ An appliance is any device that contains and uses a Class 1 or Class 2 refrigerant for household or
commercial purposes.
15. What type of recovery equipment is classified as 'active'?
- ✅ Self-contained recovery equipment.
16. What is 'passive' recovery equipment?
- ✅ System-dependent recovery equipment.
17. Who is allowed to purchase CFC-12 in containers smaller than 20 pounds?
- ✅ Only technicians certified under Section 609.
