What is the maximum allowable discharge temperature to prevent probable compressor failure?

The maximum allowable discharge temperature to prevent probable compressor failure is 250 °F. This temperature is critical because operating a compressor at temperatures significantly above this limit can lead to several issues, including overheating, lubrication breakdown, and mechanical wear.

When the discharge temperature exceeds 250 °F, the oil used for lubrication can break down, losing its capacity to effectively lubricate the moving parts within the compressor. This can lead to increased friction and heat, which exacerbates the situation and may ultimately result in compressor failure. Furthermore, some refrigerants may decompose at high temperatures, leading to the formation of corrosive acids that can damage system components.

Maintaining the discharge temperature within acceptable limits is essential for the longevity and efficiency of the refrigeration system. Regular monitoring and maintaining proper refrigerant charge, along with ensuring adequate airflow over the condenser and evaporator coils, are pivotal practices to prevent reaching these harmful temperature levels.