According to the CSA B52 Mechanical Refrigeration Code, what is the maximum pressure at which the pressure limiting device should stop the compressor?

The maximum pressure at which the pressure limiting device should stop the compressor according to the CSA B52 Mechanical Refrigeration Code is set at 90%. This safety measure ensures that the system operates within a safe range, preventing overpressure conditions that could lead to equipment failure or hazardous situations.

In refrigeration systems, maintaining optimal pressure levels is crucial for efficient operation and safety. The 90% threshold serves as a critical limit allowing for a margin of safety above the normal operating pressure. When the pressure reaches this limit, the device automatically halts the compressor to protect the system from conditions that could result in mechanical damage or compromise the integrity of the refrigeration cycle.

Factors such as the specific design and operational characteristics of the refrigeration system are taken into account when determining this safety limit. This regulation underscores the importance of having reliable safety mechanisms in place to preemptively address potential overpressure situations in mechanical refrigeration applications.