A system designed for high-speed compressors often requires a lower viscosity like PAG 46 to ensure proper flow, while heavier-duty applications might necessitate PAG 100 to maintain a robust lubricating film. This oil is highly hygroscopic, meaning it readily absorbs water from the atmosphere.
Understanding the Chemical Properties of Pag Oil R134a
Its molecular structure allows it to mix readily with R134a, which is a benefit considering that refrigerants do not naturally lubricate compressor components. Technicians should always store containers in a sealed environment and minimize the time the container is open to the air during servicing to prevent contamination.
Introducing the wrong oil type into a system contaminated with the incorrect lubricant will result in separation, loss of lubrication, and eventual compressor failure. Referencing the vehicle's service manual is the only reliable method to determine the exact specification required for a recharge or repair.
Understanding the Chemical Properties of Pag Oil R134a
When the correct refrigerant is confirmed, the PAG oil ensures that the compressor runs smoothly, maintaining the system's coefficient of performance and preventing the inefficiencies caused by friction or poor lubrication. Common grades include PAG 46, PAG 100, and PAG 150, with the number representing the oil's thickness at operating temperature.
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