Atlas Copco Core components of the kit
Oil filter (oil filter element)
Usually contains 1-2 main filter elements, some kits include a pre-filter element. The filter element material is mostly composite filter paper or glass fiber, used to filter metal debris, oil sludge, impurities, etc. in the engine oil to prevent them from entering the precision components such as bearings and gears and causing wear.
The specifications need to match the model of the air compressor, with a filtration accuracy generally ranging from 10 to 20 microns to ensure efficient interception of pollutants.
Oil separator filter element (oil-gas separator)
The core component is a high-precision separation filter element, mostly made of multi-layer glass fiber or polyester materials. It separates the oil mist in the compressed air through interception and coagulation principles, controlling the oil content in the exhaust to be below 3 ppm (some high-end models can reach 0.5 ppm).
This directly affects the quality of compressed air and fuel consumption. Blockage will lead to an increase in pressure difference and energy consumption of the unit.
Sealing parts and accessories
Including the oil filter housing sealing ring, oil separator end cover gasket, O-ring, etc. The material is mostly oil-resistant nitrile rubber or fluororubber to ensure no leakage after replacement.
Some kits include drain bolt gaskets, cleaning cloth, and special lubricating oil (in small quantities, used for lubricating the sealing parts during installation).
Maintenance tools (for some high-end kits)
Complementary filter wrench (for disassembling the filter housing), torque wrench (to ensure the installation torque meets the standard), funnel (for adding new oil when refilling), etc., simplifying the replacement process.
Applicable scenarios and replacement cycle
Regular maintenance: Replace the filter element and oil separator every 2000-4000 hours of air compressor operation, which is a core item of preventive maintenance.
Fault repair: When there are abnormal oil pressure, excessive oil content in compressed air, or sudden increase in fuel consumption, check and replace the corresponding filter element.
Key points and precautions for replacement
Preparation before operation: Shut down the machine and release the system pressure, close the inlet and outlet valves of the oil tank to prevent oil from spraying out; prepare a container for collecting waste oil to prevent environmental pollution.
Replacement steps:
Remove the old oil filter and oil separator, pay attention to observing the condition of the old filter element (such as whether there are metal debris, which can determine the internal wear condition);
Clean the installation surface, remove residual sealant or oil stains;
Apply a small amount of clean engine oil on the surface of the new sealing element, tighten the housing according to the specified torque (avoid over-tightening causing deformation of the housing or damage to the sealing element);
After replacement, check the sealing performance, observe the pressure change during the initial operation to see if it is normal.
Environmental requirements: Waste filter elements and waste oil need to be treated in accordance with industrial waste regulations to avoid environmental pollution.
Purchase suggestions
Prioritize original factory kits to ensure that the filter element size, filtration accuracy match the equipment (such as Atlas, Sullair brand dedicated kits);
Third-party kits need to confirm certification qualifications (such as ISO standards) to avoid equipment damage due to insufficient filtration efficiency;
For air compressors used in long-term high dust and high-temperature environments, choose enhanced filter elements (such as metal mesh composite filter elements), which can shorten the replacement cycle.
Regularly use qualified oil filter and oil separator service kits for maintenance can effectively reduce equipment wear, lower energy consumption, and improve the quality of compressed air, and is an extremely cost-effective basic project in air compressor maintenance.
