What are the two manually adjusted parameters of a high pressure switch?

A high pressure switch is designed to monitor the pressure within a refrigeration system and help prevent system damage by shutting off the compressor if the pressure exceeds a predetermined level. The two manually adjusted parameters of a high pressure switch are commonly known as the cut-out and differential.

The cut-out pressure refers to the specific pressure level at which the high pressure switch will activate and turn the system off to prevent further increase in pressure. This setting is critical because exceeding a certain pressure can lead to system failure or damage.

Differential refers to the difference in pressure that allows the switch to reset and turn the system back on once the pressure drops below a certain level. It provides a buffer that prevents the system from constantly turning on and off, which can cause wear and tear on the compressor.

By understanding the roles of cut-out and differential, technicians can correctly adjust the settings of a high pressure switch to ensure optimal operation and safety of the refrigeration system. This type of configuration is essential for maintaining proper functionality and preventing potential hazards associated with high pressures in the system.