Type I — Small AppliancesCâu 120 / 240
A technician plans to recover from a chest freezer whose compressor is seized (inoperable). Which combination correctly describes the required equipment and recovery level?
a.Passive equipment; 90% recovery
b.Any equipment; 100% recovery
c.Self-contained equipment; 4 inches Hg above atmospheric
d.Self-contained (active) equipment; 80% recovery or 4 inches Hg vacuum
Giải thích
With a seized, inoperable compressor, the appliance cannot help move refrigerant, so self-contained (active) recovery equipment is needed and the required level is 80% recovery or 4 inches Hg vacuum. The 90% level applies only when the compressor operates. No method requires 100% recovery, and 4 inches Hg above atmospheric is not a vacuum.
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
- A technician recovers refrigerant from ten small appliances into one recovery cylinder over a day. What must the technician watch to avoid overfilling the cylinder?
- Which statement about system-dependent (passive) recovery on small appliances is correct?
- A homeowner offers to help a Type I technician 'top off' a leaking mini-fridge instead of finding the leak. What is the best professional practice?
- A technician evacuates a small appliance to 4 inches Hg vacuum and, after closing the valves, watches the pressure rise back toward zero. What does this rising pressure most likely indicate?
- A new hire will only recover, service, and dispose of household refrigerators and window units. Which is the minimum certification the employer should require?
- A technician needs a permanent, leak-free access point after servicing a small sealed refrigerator. Which method is preferred over leaving a bolt-on piercing valve?
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