EPA Section 608 Universal Certification ExamType II (High-Pressure Appliances)Hard
A technician is performing a recovery from a high-pressure appliance containing 60 pounds of R-407C. The recovery equipment was manufactured before November 15, 1993. What is the required percentage of refrigerant that must be recovered from this appliance?
- A80%
- B90%
- C85%
- D95%
Show answer & explanationAnswer & explanation
Correct answer: A. 80%
For high-pressure appliances containing more than 10 pounds of refrigerant, when using recovery equipment manufactured BEFORE November 15, 1993, the EPA requires that 80% of the refrigerant be recovered. This is a lower recovery efficiency standard compared to newer equipment.
Why the other options are wrong
- B. 90% is required for high-pressure appliances (>10 lbs) using recovery equipment manufactured AFTER November 15, 1993.
- C. 85% is not a standard EPA recovery percentage for this category.
- D. 95% is a recovery goal for very high-pressure appliances or specific situations, not this general case.
High-Pressure Appliance Recovery Standards (Pre-1993 Equipment)
EPA regulations specify different recovery efficiency percentages for high-pressure appliances based on the refrigerant charge and the manufacturing date of the recovery equipment.
- For high-pressure appliances with >10 lbs of refrigerant, using pre-1993 equipment, 80% recovery is required.
- Different standards apply for newer equipment or smaller charges.
- The alternative is to achieve 15 inches of mercury vacuum for pre-1993 equipment.
Memory trick: Old equipment, eighty percent, no more spent!