Type I — Small AppliancesCâu 107 / 240
When a small appliance's compressor is operable, why does the rule require a higher recovery level (90%) than when it is inoperable (80%)?
a.Because operable compressors always hold less oil
b.Because a working compressor can pump refrigerant out, making higher recovery achievable
c.Because HFCs recover faster than CFCs
d.Because the appliance must be recharged afterward
Giải thích
A working compressor actively pumps refrigerant toward the recovery equipment, so more of the charge can realistically be removed, and the rule sets the higher 90% target. When the compressor cannot run, recovery is harder, so the standard is 80%. The rule scales the requirement to what is practically achievable.
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 these is a defining physical feature of a small appliance that distinguishes it from field-installed equipment?
- A technician finishes recovering a refrigerator and disconnects the equipment. To verify that recovery met the requirement using the vacuum method, what should the gauge read?
- A technician wants to recover refrigerant faster from a small appliance in cold weather when system pressure is very low. Which safe method raises pressure to aid recovery?
- A recycling center employee, who is not an HVAC technician, is the last person to handle scrap refrigerators before shredding. What must the facility ensure?
- A technician finds a household refrigerator whose sealed system was already opened and is now at 0 psig (atmospheric). During service the technician plans to recover any refrigerant present. What is the best action?
- 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?
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