Type I — Small Appliances第 115 / 240 题
Which statement about system-dependent (passive) recovery on small appliances is correct?
a.It may be used on any high-pressure appliance up to 50 pounds
b.It always recovers 100% of the charge
c.It requires an EPA-approved 25 mm Hg absolute vacuum
d.It is limited to appliances of 5 lb or less
解析
Passive (system-dependent) recovery uses the appliance's internal pressure or its compressor to move refrigerant and is limited to small appliances with five pounds or less of refrigerant. It cannot legally be used on larger appliances. No recovery method removes 100% of the charge, and the deep 25 mm Hg absolute vacuum applies to low-pressure equipment.
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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同考点相关题目
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