Final answer:
The high-pressure cut-out control for a low-pressure chiller on a recovery unit typically depends on the system's requirements and the refrigerant used, and while 30 psi might be accurate for some, manufacturer guidelines should always be referenced.
Step-by-step explanation:
A high-pressure cut-out control is a safety device used on refrigeration systems, including those found in low-pressure chillers. It is designed to shut down the compressor if the pressure in the system reaches a pre-set maximum level to prevent equipment damage or potential safety hazards. For a low-pressure chiller, the typical setting for the high-pressure cut-out control on a recovery unit used for evacuating refrigerant can vary depending on the system's requirements and the type of refrigerant used.
However, the pressure you referred to, 30 psi, could be a correct setting for certain refrigerants and systems; it's essential to refer to the specific chiller's manufacturer guidelines and the design specifications for accurate settings. High-pressure cut-out controls are integral parts of recovery units and refrigeration systems, ensuring safe and proper operation under various conditions.