1. Causes of Carbon Buildup
(1) Use of inferior-quality lubricants or non-original manufacturer lubricants.
(2) Use of counterfeit, substandard, or damaged air filters.
(3) Prolonged operation at high temperatures.
(4) Insufficient lubricant levels.
(5) Incomplete drainage of old lubricant during the oil change process, or the mixing of old and new lubricants.
(6) Mixing and using different types or grades of lubricants.
2. Methods for Inspecting Rotor Carbon Buildup
(1) Remove the intake valve and inspect the inner wall of the compressor head (pump head) for any signs of carbon buildup.
(2) Inspect the surface of the oil filter and the inner walls of the lubricant pipelines to analyze whether the lubricant shows signs of carbonization.
3. When inspecting the compressor head, non-professional personnel must not attempt to disassemble the head's outer casing. If carbon buildup is detected within the compressor head, repairs must be performed exclusively by professional technical personnel authorized by the manufacturer. The clearance between the male and female rotors within the screw air compressor head is extremely precise; therefore, during maintenance, extreme care must be taken to prevent any foreign matter or impurities from entering the head.
4. The Hazards of Carbon Buildup on Screw Air Compressor Rotors
If carbon deposits enter the main compressor unit, given the highly precise nature of its internal components, the ingress of such foreign matter will inevitably cause damage to the unit—potentially leading to the unit "seizing up" or even becoming permanently unserviceable. Furthermore, should the internal temperature reach the auto-ignition point of the lubricant, the oil within the carbon deposits will begin to burn. The resulting mixture—comprising incomplete combustion products from the gas, oil, oil mist, and thermal decomposition products of the air—forms an explosive atmosphere, which can then trigger a catastrophic explosion.