Type II — High-Pressure第 125 / 240 题
A technician must recover a large liquid charge from a supermarket rack quickly. Which recovery method moves the most refrigerant in the least time for large systems?
a.Vapor recovery through a single low-side port
b.Passive recovery using the system's pressure
c.Recovering only from the compressor oil
d.The push-pull (liquid) method
解析
The push-pull method recovers liquid refrigerant directly and is the fastest way to move a large charge, making it ideal for big systems like supermarket racks. Recovering vapor through a single port is much slower. Push-pull is generally used only when a system holds a substantial liquid charge (roughly 10 to 15 pounds or more).
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