Using recovery equipment made in 2010, what evacuation level is required before the compressor is removed?
Recovery requirements · EPA 608 Type II. The correct answer, and the reasoning behind it.
Evacuation levels by charge size and equipment date, major repairs, and system-dependent limits.
The question
A walk-in cooler system holds 120 pounds of R-134a. Using recovery equipment made in 2010, what evacuation level is required before the compressor is removed?
- 0 inches of Hg vacuum
- 4 inches of Hg vacuum
- 15 inches of Hg vacuum
- 10 inches of Hg vacuumCorrect answer
Why “10 inches of Hg vacuum” is correct
R-134a is a medium-pressure refrigerant. A medium-pressure appliance under 200 pounds must be evacuated to 10 inches of Hg vacuum with equipment made on or after November 15, 1993, and to 4 inches with older equipment.
Source: 40 CFR 82.156(a), Table 1; 40 CFR 82.152
Why the other answers are wrong
- 0 inches of Hg vacuum — 0 inches is the level for high-pressure appliances under 200 pounds, but R-134a is medium-pressure.
- 4 inches of Hg vacuum — 4 inches is this row's requirement only with equipment made before November 15, 1993.
- 15 inches of Hg vacuum — 15 inches applies when the medium-pressure charge is 200 pounds or more.
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.