In a Freon refrigerating system with hard copper fittings, how should joints be secured?

In a Freon refrigerating system that utilizes hard copper fittings, joints must be secured through soldering or brazing. This method is essential because it creates a strong and durable bond that can withstand the pressures and temperatures typically found in refrigeration systems. Soldering provides a reliable seal for low-pressure systems, while brazing is used for higher pressure connections, ensuring they maintain integrity over time.

The process involves heating the joint area and allowing filler material to flow into the gap between the metal surfaces, forming a solid connection as it cools. This is particularly important in refrigerant systems to prevent leakage, which can lead to inefficiency, potential environmental hazards, and the risk of system failure. Properly brazed or soldered joints also ensure compatibility with the thermodynamic properties of Freon, contributing to the overall efficiency and safety of the refrigeration cycle.