Should Refrigeration Oil Be Added from the Low Pressure or High Pressure Side?

1 Answers
GiselleAnn
07/29/25 11:59pm
Refrigeration oil should be added from the low-pressure side. A dedicated filling device injects it through the low-pressure line port. The functions of refrigeration oil are as follows: 1. Lubrication: Refrigeration oil lubricates the compressor during operation, reducing friction and wear, thereby extending the compressor's service life. 2. Sealing: It acts as a sealant in the compressor, ensuring tight seals between the piston and cylinder walls, as well as between rotating bearings, to prevent refrigerant leakage. 3. Cooling: While lubricating moving parts, refrigeration oil carries away heat generated during operation, maintaining lower temperatures for these components, thus improving compressor efficiency and operational reliability. 4. Energy Regulation: For refrigeration compressors equipped with energy regulation mechanisms, the oil pressure of refrigeration oil can serve as the driving force for the energy adjustment mechanism.
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