š Key Concepts
ā¢ Liquid-only refrigerant removal from a low-pressure chiller versus full recovery/recycling machines
ā¢ Difference between a pump-out tank (storage only) and a recovery unit that filters/processes vapor and liquid
ā¢ Why low-pressure systems often use a separate device later for vapor recovery and processing
š Think About
ā¢ Look at which illustrated device is primarily a large storage vessel designed to hold liquid refrigerant, rather than a compact machine with lots of controls, gauges, and processing components.
ā¢ Ask yourself: which device seems intended to move a large volume of liquid quickly off the system, and which ones look more like machines that recover, compress, and clean refrigerant?
ā¢ For a unit that does not process refrigerant, would you expect many filters, gauges, and control knobs, or a simpler arrangement focused on volume and storage?
ā
Before You Answer
ā¢ Identify which option is basically a pump-out/storage tank with minimal processing equipment attached.
ā¢ Eliminate any device that clearly has multiple gauges, controls, and filtration components, since these typically process and recover vapor as well as liquid.
ā¢ Confirm that your chosen device could reasonably be used first for bulk liquid pump-out, with a different recovery unit used later for final vapor removal and cleanup.