Type III — Low-Pressure第 176 / 240 题
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
解析
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.
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