Type II — High-PressureCâu 142 / 240
During recovery from a Type II system, a technician sees noncondensable gases (air) collected in the recovery cylinder. What is the correct handling under Section 608?
a.Release the noncondensables and refrigerant together into a ventilated room
b.Do not vent regulated refrigerant; separate or purge only true noncondensables per proper procedure and equipment, never releasing refrigerant
c.Vent the whole cylinder and start over
d.Add the mixture back into the customer's system as is
Giải thích
Regulated refrigerant must never be vented, so a technician cannot simply release the cylinder contents. Only genuine noncondensables may be purged, and only using proper recovery/recycling equipment and procedures that do not release refrigerant. Reusing a mixture contaminated with air can damage the system and reduce performance.
Trích dẫn luật: 40 CFR §82.154Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A technician sets up push-pull recovery on a system with a large liquid charge. How does the push-pull method work?
- A very-high-pressure appliance using R-13 must have its refrigerant recovered before service. Using recovery equipment made after November 15, 1993, what is the required evacuation level?
- A technician measures 12°F of superheat on a fixed-orifice R-22 system but the manufacturer's chart calls for 20°F at those conditions. What does the low superheat suggest?
- A DOT-approved refrigerant recovery cylinder must be periodically retested for safety. What is the standard hydrostatic retest interval for these cylinders?
- A technician wants a quick way to know whether a recovery cylinder is a refrigerant recovery cylinder by its color scheme. What is the standard color for a refrigerant recovery cylinder?
- A technician performing recovery notices the process is very slow because the recovery cylinder is warm and its pressure is high. Which action will speed recovery?
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