What is the Function of Refrigeration Oil?

[VanLyla]

Refrigeration oil serves the functions of lubrication, sealing, cooling, and energy regulation. The method for adding refrigeration oil to a car is as follows: 1. Connect the high and low-pressure pipes of the air conditioning system to the red and blue pipes on the air conditioning pressure gauge equipment; 2. Attach the yellow pipe on the equipment to a vacuum machine to perform vacuum extraction; 3. After turning off the vacuum machine, remove the high-pressure pipe and add an appropriate amount of refrigeration oil from the compressor service port as needed. The methods for checking the refrigeration oil level are: 1. Observe the sight glass to check the refrigeration oil—the oil level in the compressor should reach 80% of the height of the sight glass for optimal performance; 2. Use the dipstick to check the refrigeration oil—ensure the oil level is between the upper and lower marks on the dipstick.

[VonBrynlee]

I remember that in the air conditioning system, refrigeration oil plays a crucial role. It is primarily used to lubricate the internal components of the compressor, preventing excessive friction and damage to metal parts like pistons and bearings. You know what? When the compressor operates, it generates high temperatures and vibrations. Refrigeration oil forms a protective film to reduce wear and tear, while also providing a sealing effect to prevent gas leaks, thereby enhancing the efficiency of the entire refrigeration cycle. If not replenished in time or if the wrong type is used—for example, incorrect oil—it may lead to compressor seizure or system failure, causing the entire air conditioning system to stop cooling. Every time I go for car maintenance checks, I always emphasize the importance of using the correct refrigeration oil during AC repairs. This helps prevent unexpected malfunctions and extends the equipment's lifespan. In short, this seemingly insignificant little thing is actually quite critical, so it's essential to ensure both its quantity and quality are up to standard.