What operates the oil pressure safety switch?

The oil pressure safety switch is designed to monitor and respond to both oil pressure levels and suction pressure to ensure the safe operation of the system. It is activated when specific thresholds are reached, which means it does not rely solely on one element but rather the combination of both suction pressure and oil pressure.

This dual operation is crucial because the oil pressure can help indicate the health of the lubrication system, while the suction pressure provides context related to the compressor's performance and operational effectiveness. If either pressure falls below a critical level, it can trigger the safety system, helping to prevent equipment damage or failure.

In contrast, focusing on the compressor alone would overlook the crucial role of the oil and suction pressure in ensuring proper functionality and safety. Options that suggest solely relying on oil pressure or external electrical signals miss the integrated approach that the oil pressure safety switch employs in monitoring the system's conditions.