Before operating a refrigeration system, which specific component is usually not required to be tested?

In the context of operating a refrigeration system, the compressors are typically not required to undergo intensive testing before the initial operation. This is primarily because compressors are generally designed for reliability and can be assessed through operational checks rather than exhaustive tests. They should be installed correctly and checked for proper electrical connections and mechanical setups, but extensive testing is often not necessary before starting the system.

Conversely, the other components—evaporators, safety valves, and control mechanisms—often require specific checks and tests to ensure safety and efficiency. Evaporators need to be checked for leaks and proper installation to maintain efficiency in heat exchange. Safety valves are critical for preventing system overpressurization and must be tested to ensure they open under the right conditions. Control mechanisms play a crucial role in regulating system operations, and confirming their proper function is essential for safe and efficient performance.

Thus, while a general check may be conducted to ensure compressors are functioning correctly, they do not undergo the rigorous testing that the other components frequently require prior to the operation of a refrigeration system.