Core (Universal)Câu 31 / 240
Under the traditional color code, which refrigerant cylinder is rose (pink)?
a.R-22
b.R-134a
c.R-410A
d.R-12
Giải thích
R-410A cylinders are traditionally colored rose (pink), which distinguishes them from light-green R-22, light-blue R-134a, and white R-12. Because R-410A operates at much higher pressures than R-22, using the correct refrigerant and gauges matters for safety. As always, the printed label is the authoritative identification, not the color.
Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Cylinders used to store recovered refrigerant must be approved by which agency for transportation?
- A technician needs to identify a cylinder by its color. Which color has EPA and industry designated for refrigerant recovery cylinders?
- A technician pulls a light-green cylinder from the truck. Under the traditional color code, which refrigerant does light green identify?
- A commercial supermarket rack system contains more than 50 pounds of refrigerant and develops a leak. Once the owner exceeds the applicable annual leak rate, the leak generally must be repaired within:
- Under the leak repair rules, the leak rate thresholds apply to appliances that normally contain how much refrigerant?
- A service company disposes of a chiller that held 200 pounds of R-123. Records showing the refrigerant was recovered and the quantities involved generally must be kept for at least:
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