Type II — High-PressureQuestion 125 of 240
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.Recovering only from the compressor oil
b.Passive recovery using the system's pressure
c.The push-pull (liquid) method
d.Vapor recovery through a single low-side port
Explanation
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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Related questions on this topic
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