EPA Section 608 Universal Certification ExamType II (High-Pressure Appliances)Hard
A technician is preparing to recover refrigerant from a high-pressure commercial refrigeration system. The system has a charge of 45 lbs of R-404A. What is the MINIMUM percentage of refrigerant that must be recovered if the recovery unit was manufactured AFTER November 15, 1993?
- A90% regardless of compressor operation
- B80% if the compressor is NOT operating
- C80% if the compressor is operating
- D95% regardless of compressor operation
Show answer & explanationAnswer & explanation
Correct answer: A. 90% regardless of compressor operation
For high-pressure appliances with a charge greater than 5 lbs, using recovery equipment manufactured AFTER November 15, 1993, the EPA requires recovery of 90% of the refrigerant. This standard applies regardless of whether the compressor is operating or not.
Why the other options are wrong
- B. 80% if the compressor is NOT operating applies to equipment manufactured BEFORE November 15, 1993, or for systems with a charge less than 5 lbs.
- C. 80% is the standard for systems with an operating compressor when using equipment manufactured BEFORE November 15, 1993, or for systems with a charge less than 5 lbs.
- D. 95% is not a standard recovery percentage under EPA 608 for this type of system.
High-Pressure Appliance Recovery Standards
Minimum percentage of refrigerant that must be recovered from high-pressure appliances, based on system charge, compressor operation, and recovery equipment age.
- 90% for post-1993 equipment (charge > 5 lbs).
- 80% for pre-1993 equipment or charge < 5 lbs.
- Different standards for low-pressure appliances.
Memory trick: Newer machine, bigger system? Go for the 'NINETY' percent!