Type I — Small AppliancesCâu 89 / 240
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
Giải thích
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.
Trích dẫn luật: 40 CFR §82.156Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Self-contained (active) recovery equipment is best described by which of the following?
- A scrap yard receives old household refrigerators and vending machines for crushing. Before the units are disposed of, who is responsible for ensuring the refrigerant is recovered?
- Which of the following units would a technician correctly classify as a small appliance?
- A technician wants to speed up refrigerant recovery from a chest freezer by heating the compressor with a torch and rapping the tubing with a hammer. Which statement is correct?
- System-dependent (passive) recovery equipment may be used on which of the following?
- During recovery from a small appliance with a working compressor, a technician can only reach 82% recovery before the unit stops pulling down. What should the technician do to comply?
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