Type II — High-Pressure第 122 / 240 题
A technician uses recovery equipment manufactured after November 15, 1993 on an R-22 split system that normally holds less than 200 pounds of refrigerant. To what level must the appliance be evacuated during recovery?
a.0 inches Hg vacuum
b.4 inches Hg vacuum
c.15 inches Hg vacuum
d.10 inches Hg vacuum
解析
For high-pressure appliances containing less than 200 pounds of refrigerant, recovery equipment made after November 15, 1993 must evacuate to 10 inches of mercury vacuum. The 15 inches Hg level applies to appliances holding 200 pounds or more. The lower 0 and 4 inches Hg levels apply only to older equipment made before November 15, 1993.
法律依据: 40 CFR §82.156免费刷完整 240 道题库 — 无需注册。
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