🔍 Key Concepts
• Liquid-only refrigerant removal from a low-pressure chiller versus full recovery/recycling machines
• Difference between a pump-out tank (storage only) and a recovery unit that filters/processes vapor and liquid
• Why low-pressure systems often use a separate device later for vapor recovery and processing
💭 Think About
• 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.
• 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?
• 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?
✅ Before You Answer
• Identify which option is basically a pump-out/storage tank with minimal processing equipment attached.
• Eliminate any device that clearly has multiple gauges, controls, and filtration components, since these typically process and recover vapor as well as liquid.
• 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.