EPA 608 609 - EPA Refrigerant Handling Certification EPA 608 Universal Practice Test 1 — Questions and Answers
Question 1: When recovering refrigerant from a high-pressure appliance containing more than 200 pounds of charge using recovery equipment manufactured after November 15, 1993, what evacuation level must be achieved?
- 4 inches of mercury vacuum
- 10 inches of mercury vacuum
- 15 inches of mercury vacuum (Correct answer)
- 25 inches of mercury vacuum
Correct answer: 15 inches of mercury vacuum
EPA 608 regulations require recovery equipment manufactured after November 15, 1993 to achieve 15 inches of mercury vacuum for high-pressure appliances with charges exceeding 200 pounds. Smaller high-pressure systems (≤200 lbs) require only 10 inches Hg.
Question 2: Under EPA Section 608, comfort cooling equipment with a refrigerant charge over 50 pounds must be repaired if the annual leak rate exceeds what percentage?
- 5%
- 10%
- 15% (Correct answer)
- 35%
Correct answer: 15%
EPA 608 sets a 15% annual leak rate trigger for comfort cooling systems. Commercial refrigeration and industrial process refrigeration systems have a higher threshold of 35%, reflecting the EPA's stricter stance on equipment used for human comfort.
Question 3: What DOT-approved color coding identifies a cylinder intended specifically for storing recovered, used, or contaminated refrigerant?
- Light blue body with white top
- Green body with white top
- Gray body with yellow top (Correct answer)
- Silver body with orange top
Correct answer: Gray body with yellow top
DOT-approved recovery cylinders for used or contaminated refrigerant are color-coded gray with a yellow top. This distinguishes them from cylinders of virgin refrigerant and prevents contaminated refrigerant from being mistakenly introduced into a clean system.
Question 4: Before reclaimed refrigerant can be legally resold or transferred into equipment owned by a different customer, it must meet the purity requirements of which standard?
- ASHRAE Standard 15
- AHRI Standard 700 (Correct answer)
- EPA 40 CFR Part 82 Appendix A
- ISO Standard 817
Correct answer: AHRI Standard 700
Reclaimed refrigerant must meet AHRI Standard 700 purity specifications before it can be resold or used in another owner's equipment. This standard ensures the reclaimed refrigerant is chemically equivalent to virgin refrigerant.
Question 5: A technician holds only an EPA Section 608 Type II certification. Which of the following tasks is outside the scope of that credential?
- Recovering R-410A from a 10-ton commercial rooftop unit
- Recharging an R-404A supermarket display case with a 30-pound charge
- Recovering R-123 from a centrifugal chiller (Correct answer)
- Servicing an R-22 split system with a 6-pound charge
Correct answer: Recovering R-123 from a centrifugal chiller
R-123 is a low-pressure refrigerant used in centrifugal chillers, which fall under Type III (low-pressure) certification. Type II certification covers only high-pressure appliances with charges greater than 5 pounds, so a Type III or Universal certificate is required for R-123 chillers.
Question 6: Under EPA Section 608 regulations, how long must owners and operators of commercial or industrial refrigeration equipment retain refrigerant purchase and service records?
- 1 year
- 3 years (Correct answer)
- 5 years
- 10 years
Correct answer: 3 years
EPA regulations under Section 608 require that records documenting refrigerant purchases, recoveries, and service activities for commercial and industrial equipment be kept for a minimum of three years and made available for EPA inspection upon request.
EPA 608 609 - EPA Refrigerant Handling Certification EPA 608 Universal Practice Test 1
When recovering refrigerant from a high-pressure appliance containing more than 200 pounds of charge using recovery equipment manufactured after November 15, 1993, what evacuation level must be achieved?