Refrigeration Plant Operator B Full Practice Test 2025

In the context of refrigeration compressors, overheating can occur due to various factors, but one of the significant contributors is improper lubrication. Compressors rely on a lubricant to minimize friction between moving parts, dissipate heat, and provide a seal within the compressor. When lubrication is inadequate, several issues can arise, such as increased friction, which generates excess heat. Over time, this can lead to compressor failure due to overheating, which might result in damaged components or complete breakdown.

Other failure modes, such as a blockage in the suction line or excessive pressure fluctuations, can also impact the overall performance of a refrigeration system but are more likely to cause issues like reduced efficiency or increased compressor load rather than immediate overheating specifically linked to lubrication issues. Leaking valves may affect system pressure but do not directly cause overheating in the same way that poor lubrication does. Understanding the critical role of proper lubrication is essential for maintaining the operational integrity of refrigeration compressors.