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.Vent the whole cylinder and start over
b.Do not vent regulated refrigerant; separate or purge only true noncondensables per proper procedure and equipment, never releasing refrigerant
c.Release the noncondensables and refrigerant together into a ventilated room
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?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với EPA Section 608 Technician Certification Exam · Quy trình kiểm tra