Which recovery machine is a technician required to use on a 300-pound R-410A system?
Recovery techniques · EPA 608 Type II. The correct answer, and the reasoning behind it.
Recovering liquid first, speeding recovery, and avoiding cross-contamination.
The question
Which recovery machine is a technician required to use on a 300-pound R-410A system?
- Any machine that reaches 10 inches of Hg
- Any machine built before November 15, 1993, whatever its rating
- A system-dependent unit
- A machine certified for that refrigerant and type of applianceCorrect answer
Why “A machine certified for that refrigerant and type of appliance” is correct
No one may service or dispose of an appliance without using recovery or recycling equipment certified for that type of refrigerant and appliance. It must also be used according to the manufacturer's directions.
Source: 40 CFR 82.154(b); 40 CFR 82.156(g)
Why the other answers are wrong
- Any machine that reaches 10 inches of Hg — Reaching a vacuum is not enough; the machine must be certified for the job.
- Any machine built before November 15, 1993, whatever its rating — Only machines certified for the refrigerant and appliance qualify, whatever their age.
- A system-dependent unit — System-dependent equipment cannot be used on systems over 15 pounds.
Practice more of this
More EPA 608 Type II practice questions, or see every EPA 608 practice test.
Unofficial, not affiliated with the EPA or any EPA-approved certifying organization. Questions are original practice written from public EPA material, not real exam questions.