Type I — Small Appliances第 89 / 240 题
A technician needs to access the sealed system of a household refrigerator that has no service valve. What tool is commonly used to gain temporary access for recovery?
a.A brazing torch to open the suction line permanently
b.A micron gauge
c.A saddle-type piercing (line-tap) valve on the process stub or tubing
d.A halide leak detector
解析
Small sealed appliances often lack service ports, so technicians attach a piercing (saddle) valve to a process stub or copper line to access the refrigerant for recovery. A piercing valve should be used only temporarily because it can leak over time. After service the access point is typically brazed closed rather than left on a bolt-on piercing valve.
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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