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EPA 608 CERTIFICATION EXAM
2023/2024 UPDATE!! (More than 200
QUESTIONS AND 100% CORRECT
VERIFIED ANSWERS)
1. All refrigerants are assumed to be a single chemical if they are numbered what?
✓ Answer: 1-399 and 600 and above.
2. What is an Azeotrope?
✓ Answer: A mixture of two or more liquids in such a ratio that it's
composition cannot be changed by vaporizing it.
3. Azeotrope's are numbered what?
✓ Answer: 500 to 599
4. What is fractionation?
✓ Answer: When the refrigerant leaks, it leaks out in different rates due to
the different pressures.
5. What is Temperature Glide?
✓ Answer: When the temperature of the vaporizing refrigerant changes,
even though the pressure remains the same.
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6. What are the two basic types of recovery devices?
✓ Answer: Self-Contained and System-Dependent.
7. System-Dependent devices may only be used on appliances containing how much
refrigerant?
✓ Answer: 15 Lbs of refrigerant or less
8. What MUST be placed on a refrigerant cylinder being returned for reclaiming.
✓ Answer: A refrigerant label.
9. After completing the transfer of liquid refrigerant between a recovery unit and a
refrigeration system, you should guard against what?
✓ Answer: Trapping liquid refrigerant between the service valves.
10. When pressurizing a system with nitrogen, you should always?
✓ Answer: Charge through a pressure regulator.
11. What are the three "R's"?
✓ Answer: Recover, Recycle, and Reclaim.
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EPA 608 CERTIFICATION EXAM
2023/2024 UPDATE!! (More than 200
QUESTIONS AND 100% CORRECT
VERIFIED ANSWERS)
1. All refrigerants are assumed to be a single chemical if they are numbered what?
✓ Answer: 1-399 and 600 and above.
2. What is an Azeotrope?
✓ Answer: A mixture of two or more liquids in such a ratio that it's
composition cannot be changed by vaporizing it.
3. Azeotrope's are numbered what?
✓ Answer: 500 to 599
4. What is fractionation?
✓ Answer: When the refrigerant leaks, it leaks out in different rates due to
the different pressures.
5. What is Temperature Glide?
✓ Answer: When the temperature of the vaporizing refrigerant changes,
even though the pressure remains the same.
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6. What are the two basic types of recovery devices?
✓ Answer: Self-Contained and System-Dependent.
7. System-Dependent devices may only be used on appliances containing how much
refrigerant?
✓ Answer: 15 Lbs of refrigerant or less
8. What MUST be placed on a refrigerant cylinder being returned for reclaiming.
✓ Answer: A refrigerant label.
9. After completing the transfer of liquid refrigerant between a recovery unit and a
refrigeration system, you should guard against what?
✓ Answer: Trapping liquid refrigerant between the service valves.
10. When pressurizing a system with nitrogen, you should always?
✓ Answer: Charge through a pressure regulator.
11. What are the three "R's"?
✓ Answer: Recover, Recycle, and Reclaim.
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