Lubrication of the air conditioning compressor - the impact of incorrect additives on its operation.

Lubrication is essential for proper compressor operation. If the wrong amount of additives or the wrong type of additives are added to the oil, its lubricating properties will deteriorate. In addition, the oil helps to keep all connections and hoses in the system tight. In addition, the lubricant acts as a coolant, drawing heat from the compressor and preventing it from overheating. Compressor manufacturers carefully select the most appropriate type of oil to ensure maximum life and efficiency of the compressor and the entire air conditioning system.

WHAT COULD HAVE PROPER LUBRICATION OF THE COMPRESSOR?

1. Using an excessive amount of UV agent will dilute the oil. This will cause a change in the viscosity and density of the mixture, which in turn leads to a deterioration in the lubricating properties and, as a consequence, to the failure of the compressor. Adding too much UV contrast or oil will block the flow and increase pressure in the system, putting more stress on the compressor. The amount of UV dye used should not exceed 5% of the total oil volume.
   
2. Residual flushing agent in the system - will significantly deteriorate the lubricating ability of the oil. In addition, they can deteriorate the quality of the Teflon coating in the compressor, causing the Teflon particles to flake off and clog the system. After flushing, always purge the system with nitrogen to remove residual flushing agent and dry the entire system effectively.
3. Failure to vacuum the system properly and for too short a time will leave moisture in the system which will reduce the oil's ability to lubricate and may eventually cause the compressor to seize. Harmful acids can then form in the system, which corrode metals, including the corrosion of the air conditioning condenser. This will contaminate the inside of the component or the entire system.

FREQUENT FAULTS

The use of enriching additives is not a mistake, but their incorrect selection and dosage can make them harmful to the operation of the entire system or individual components. Especially for compressors, a thin film of oil between the pistons and cylinders ensures smooth operation of this device. The wrong amount of additives or the wrong type of additives will impair the lubricating ability of the oil. When the original oil is mixed with another substance, the structure and composition of the oil film may be affected and thus its lubricating ability may be impaired. In addition, it will deteriorate the performance of the compressor and shorten its service life. An oil that is not optimized for a given compressor can lead to overheating or seizure.

Oil with a dark green color due to too much UV dye.

Oil contaminated with sealant - visible contamination on swing plate and pistons.

Oil with a dark green color due to too much UV dye.

RECOMMENDED SOLUTION

Always follow the compressor or vehicle manufacturer's guidelines for the proper selection of oil for your AC compressor. Nissens compressors are always supplied with instructions describing the general correct installation procedure. In addition, Nissens compressors are always pre-charged with the correct type and amount of PAG oil, so there is no need to add additional oil. Always follow the instructions carefully when using UV dye, sealants or system flushing solution. System service procedures such as rinsing or drying require great attention to detail at every step of the process.

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