What temperature should be avoided when working with low-pressure refrigeration systems?

When working with low-pressure refrigeration systems, it is important to avoid operating in temperatures below 0°F. Low-pressure systems often utilize refrigerants that can easily become too cold at these temperatures, leading to issues such as freezing and the potential for condensate to freeze within the system. This can impair the system’s efficiency and functionality. Additionally, components like compressors and evaporators can be damaged if the refrigerant inside them reaches temperatures that cause solidification or undesirable phase changes.

Maintaining the appropriate temperature range ensures that the refrigerants remain in their intended state — either liquid or vapor — and allows the system to function correctly without mechanical failures caused by thermal stress or freezing.