Type I — Small AppliancesCâu 91 / 240
System-dependent (passive) recovery equipment may be used on which of the following?
a.A 25-pound commercial ice machine
b.A rooftop unit with a 40-pound R-410A charge
c.Any appliance regardless of charge size
d.Only small appliances (5 pounds or less of refrigerant)
Giải thích
Passive, system-dependent recovery equipment is restricted to small appliances containing five pounds or less of refrigerant. Larger appliances must be serviced with self-contained (active) recovery equipment. This limit exists because passive equipment cannot reliably reach required recovery levels on larger charges.
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
- Which of the following units would a technician correctly classify as a small appliance?
- 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 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?
- 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?
- A shop buys a new recovery machine to service small appliances. Recovery equipment manufactured after November 15, 1993 must meet which requirement?
- A technician removes a bolt-on piercing valve after finishing recovery on a refrigerator. Why is leaving a piercing valve on the system long-term discouraged?
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