What does the low oil pressure cut-off switch do in a mechanical refrigeration system?

The low oil pressure cut-off switch plays a critical role in ensuring the safe and efficient operation of a mechanical refrigeration system. Its primary function is to monitor the oil pressure within the compressor. When the oil pressure falls below a predetermined minimum threshold, the switch is activated to shut down the compressor.

This safety feature is vital because insufficient oil pressure can lead to inadequate lubrication, which may cause severe damage to the compressor components due to increased friction and overheating. By interrupting the operation of the compressor when oil pressure is low, the cut-off switch aids in preventing costly repairs and maintaining the longevity of the refrigeration system. The focus on protecting the compressor highlights the importance of proper lubrication in maintaining overall system stability and performance.