Type I — Small Appliances第 110 / 240 题
A water cooler and a household freezer are both factory-sealed with about 3 pounds of refrigerant each. A technician servicing them must, at minimum, hold which certification and follow which recovery rule?
a.Type III; evacuate to 25 mm Hg absolute
b.Type II; evacuate to 15 inches Hg vacuum
c.Type I; recover 80%/90% or reach 4 inches Hg vacuum
d.No certification; no recovery required
解析
Both units are small appliances, so the technician needs at least Type I certification and must follow the small-appliance recovery rule of 80% (compressor off) or 90% (compressor on), or 4 inches Hg vacuum. Type II and Type III rules and their deeper vacuum levels apply to larger high- and low-pressure appliances. Recovery is always required before service or disposal.
法律依据: 40 CFR §82.156免费刷完整 240 道题库 — 无需注册。
同考点相关题目
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