Core (Universal)第 17 / 240 题
A technician services a large centrifugal chiller that uses R-123, a low-pressure refrigerant. Which certification type is required?
a.Type II
b.Type III
c.Type I
d.Any certification, because low-pressure systems are exempt
解析
Type III certification is required to service or dispose of low-pressure appliances such as R-123 and R-11 centrifugal chillers, which operate below atmospheric pressure. Type I covers small appliances and Type II covers high-pressure systems, and low-pressure systems are not exempt. A Universal certification would also qualify because it includes Type III.
法律依据: 40 CFR §82.161免费刷完整 240 道题库 — 无需注册。
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