What are the factors that cause the air compressor to heat up!
DateTime：2025-09-29Source：U-air chainHits：
Overheating is one of the most frequent issues plaguing screw air compressors, threatening equipment integrity and disrupting production—particularly critical for pharmaceutical and manufacturing sectors reliant on 24/7 compressed air supply. Identifying the root causes of heating is key to timely intervention and prevention.
Cooling system failures top the list of culprits. Clogged radiators or heat exchangers, often caused by dust, oil sludge, or debris accumulation, block heat dissipation. In summer, high ambient temperatures exacerbate this issue, pushing cooling systems beyond their capacity. Malfunctioning temperature control valves also contribute: if stuck closed, they restrict coolant flow, leading to a rapid temperature spike. A pharmaceutical plant recently reported a 120℃ exhaust temperature—traced to a clogged radiator that hadn’t been cleaned in six months.
Lubricant-related problems are another major factor. Insufficient oil levels reduce the lubricant’s cooling and friction-reducing capabilities, as oil carries away 60% of the compressor’s heat. Degraded or mismatched oil (e.g., using low-viscosity oil in high-load operations) breaks down under heat, forming sludge that clogs oil passages. Summer’s heat accelerates oil oxidation, shortening its service life by 20%-30% if not replaced promptly.
Mechanical issues trigger excessive friction and heat. Worn rotor bearings or misaligned rotors increase metal-to-metal contact, generating extra heat during operation. Loose or damaged components like belts also cause friction, while air leakage in the compression chamber forces the unit to work harder, raising internal temperatures. These mechanical faults often manifest as sudden temperature rises alongside abnormal noise or vibration.
Environmental and operational factors can’t be ignored. Placing compressors in poorly ventilated spaces traps hot air around the unit, creating a “heat island” effect. Operating the compressor at over 100% load for extended periods—common during peak production—overstresses the system. Even intake air issues matter: dirty intake filters restrict airflow, leading to inefficient compression and increased heat generation.
For GMP-compliant facilities, overheating not only risks equipment breakdown but also compromises compressed air purity as degraded oil may contaminate the air supply. By prioritizing cooling system maintenance, regular oil checks, and mechanical inspections, enterprises can mitigate heating risks, extend compressor life, and ensure uninterrupted production.
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2025-06-24
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