When setting the low-pressure cut-out switch, how is the cut-out value calculated?

The calculation of the low-pressure cut-out switch value is crucial for ensuring the safe and efficient operation of refrigeration and air conditioning systems.

When setting this value, the cut-out point must be lower than the cut-in point to ensure proper cycling of the system. The cut-in point is the pressure at which the compressor restarts after shutting down due to low pressure, while the differential represents the range of pressure between the cut-in and cut-out settings. Thus, by subtracting the differential from the cut-in value, the cut-out value can be established. This approach prevents the compressor from operating at pressures that might indicate a refrigerant leak or other issues, ensuring both system reliability and safety.

This calculation helps maintain the pressure within the system at optimal levels, avoiding potential damage that could be caused by excessive low pressure.