The inline refrigerant cleaning system is advisable to

• A. Remove moisture from the air surrounding the system
• B. Stabilize refrigerant temperature
• C. Seal minor leaks
• D. Remove impurities from the system

Answer: (D)

The inline refrigerant cleaning system is meant to remove impurities from the refrigerant. When refrigerant is circulated or recovered, it can carry moisture, acids, and particulates that can damage seals, valves, and metering devices, and can cause corrosion or oil problems. Cleaning the refrigerant before recharging helps protect components, prevent acid formation, and ensure the system operates smoothly.

It isn’t designed to dry the air around the system, stabilize refrigerant temperature, or seal leaks. Drying ambient air is a job for dehydrators or desiccants in the air-handling side, temperature stability comes from the refrigeration cycle and proper charge, and leaks are repaired with appropriate leak repair methods or sealants, not through inline cleaning.