Which step speeds recovery from a 100-pound R-407C 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 step speeds recovery from a 100-pound R-407C system?
- Heating the recovery cylinder
- Using the longest, smallest hoses available
- Chilling the recovery cylinderCorrect answer
- Recovering vapor before liquid
Why “Chilling the recovery cylinder” is correct
EPA lists chilling the recovery vessel and heating the appliance as ways to speed recovery. Both increase the pressure difference that drives refrigerant into the cylinder.
Source: EPA: Test Topics
Why the other answers are wrong
- Heating the recovery cylinder — Heating the cylinder raises its pressure and slows recovery.
- Using the longest, smallest hoses available — Long, narrow hoses restrict flow and slow recovery.
- Recovering vapor before liquid — Liquid first is faster; vapor first is the slow way round.
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.