Type I — Small Appliances第 113 / 240 题
A technician's self-contained recovery machine is labeled as certified for small-appliance recovery. What performance does that certification confirm it can meet?
a.Reaching 25 mm Hg absolute on low-pressure chillers
b.Recovering 100% of the refrigerant every time
c.Recovering at least 90% when the compressor operates and 80% when it does not (or 4 inches Hg vacuum)
d.Pulling 500 microns for deep dehydration
解析
A recovery machine certified for small appliances is verified to reach the required 90% (compressor operating) or 80% (compressor not operating) recovery, or the 4 inches Hg vacuum alternative. No equipment is required to recover 100% of the charge. Deep-vacuum micron levels apply to evacuation and dehydration on larger systems, not to the small-appliance recovery standard.
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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