Type III — Low-PressureCâu 176 / 240
A technician wants to warm the refrigerant in a low-pressure chiller to speed recovery. Which method is acceptable?
a.Applying a propane torch to the shell
b.Adding oxygen to raise pressure
c.Setting a space heater against the tubes
d.Circulating warm water through the chiller tubes
Giải thích
Circulating warm water through the chiller tubes gently raises refrigerant temperature and speeds recovery without risk. Using the machine's built-in heaters is also acceptable. An open flame such as a torch, or introducing oxygen, is dangerous and prohibited.
Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Approximately what inches-of-mercury vacuum reading corresponds to the 25 mm Hg absolute recovery level for low-pressure appliances?
- Non-condensable gases such as air that collect in a low-pressure chiller will:
- Compared with older designs, a high-efficiency purge unit is desirable because it:
- Low-pressure chillers most commonly use which type of compressor?
- If a low-pressure chiller's high-pressure limit control trips during operation, the technician should first:
- When recovering from a low-pressure chiller with a large charge, the most efficient practice is to:
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