🔍 Key Concepts

• Role of a dehydrator/filter-drier in a refrigeration system • What happens to particles and non‑condensable gases in the refrigerant line • Difference between the working fluid (refrigerant) and contaminants

💭 Think About

• Think about where the dehydrator is installed in the system and what must be removed to protect valves and capillary tubes from blockage. • Ask yourself: which of these choices is something the dehydrator is designed to trap and hold, rather than something it is made of or the main refrigerant itself? • Consider which contaminants, besides water and acids, would damage or clog small passages in the system if they were not removed.

✅ Before You Answer

• Identify which option is a physical contaminant that can be trapped by a filter element. • Eliminate any choice that describes the refrigerant itself rather than a contaminant. • Eliminate any choice that names part of the dehydrator’s internal material instead of something it removes.