EPA Section 608 Universal Certification ExamType II (High-Pressure Appliances)Easy
A technician is preparing to recover refrigerant from a high-pressure appliance containing R-410A. The appliance contains 35 pounds of refrigerant. What is the maximum allowable time for completing the recovery if the recovery equipment was manufactured after November 15, 1993?
- A72 hours
- B48 hours
- C10 hours
- D24 hours
Show answer & explanationAnswer & explanation
Correct answer: D. 24 hours
For high-pressure appliances containing more than 10 pounds of refrigerant, and using recovery equipment manufactured after November 15, 1993, the EPA requires that 90% of the refrigerant be recovered or the system be evacuated to 10 inches of mercury vacuum within 24 hours.
Why the other options are wrong
- A. This timeframe is not specified for high-pressure appliances with this amount of refrigerant and equipment type.
- B. This timeframe applies to certain very high-pressure appliances or older equipment.
- C. This timeframe is not specified for high-pressure appliances with this amount of refrigerant and equipment type.
High-Pressure Appliance Recovery Timeframes (Post-1993 Equipment)
EPA regulations specify maximum timeframes for refrigerant recovery from high-pressure appliances, depending on the appliance's refrigerant charge and the recovery equipment's manufacturing date.
- For high-pressure appliances with >10 lbs of refrigerant, using post-1993 equipment, recovery must be completed within 24 hours.
- Recovery must achieve 90% removal or 10 inches Hg vacuum.
- Different timeframes apply for older equipment or smaller charges.
Memory trick: Twenty-four-hour rule, or else the EPA will make you drool!