01. Air filter clogged

The air filter is an important part of protecting the air compressor. When the filter is clogged, it will cause poor air flow, increase the compressor workload, and cause the compressor to overheat. The solution is to clean and replace the filter regularly to ensure smooth airflow.

02. Cooler clogged

The cooler is a key device for reducing the temperature of compressed air. When the surface of the cooler is filled with dust and impurities, the heat dissipation effect will be weakened, causing the compressor to overheat. The solution is to regularly clean the surface of the cooler to maintain good heat dissipation.

03. Oil problem

Some air compressors require lubricating oil to ensure normal operation. When the lubricating oil quality is poor or the oil is insufficient, it will cause increased friction in the air compressor, causing overheating. The solution is to regularly check and replace the lubricating oil to ensure that the oil quality and oil quantity meet the requirements.

04. Running time is too long

Continuous long-term high-load operation can cause the air compressor to overheat. The solution is to reasonably arrange the time when using the air compressor to avoid continuous long-term high-load operation.

05. Motor problem

The motor is the power source of the air compressor. When the motor fails, it may cause the air compressor to overheat. The solution is to regularly inspect and maintain the motor to ensure it is operating properly.

06. Environmental issues

High temperatures and humid environments will affect the heat dissipation of the air compressor, leading to overheating. The solution is to provide proper ventilation and keep the ambient temperature and humidity around the air compressor within normal limits.

07. Compression temperature rise and refrigerant type

Different refrigerants have different thermophysical properties, and the exhaust gas temperature rises differently after experiencing the same compression process. Therefore, different refrigerants should be selected for different refrigeration temperatures.

08. High compression ratio

The exhaust temperature is greatly affected by the compression ratio. The greater the compression ratio, the higher the exhaust temperature. Lowering the compression ratio can significantly reduce the exhaust temperature by increasing the suction pressure and lowering the exhaust pressure. The suction pressure is determined by the evaporation pressure and the suction pipeline resistance. Increasing the evaporation temperature can effectively increase the suction pressure, quickly reduce the compression ratio, and thereby reduce the exhaust temperature. Some users are paranoid that the lower the evaporation temperature, the faster the freezing speed. This idea is actually wrong. Although lowering the evaporation temperature can increase the freezing temperature difference, the cooling capacity of the compressor is reduced, so the freezing speed is not necessarily fast. What’s more, the lower the evaporation temperature, the lower the cooling coefficient, but the load increases, the operating time is extended, and the power consumption will increase. Reducing the resistance of the return air pipeline can also increase the return air pressure. Specific methods include promptly replacing dirty and clogged return air filters and reducing the length of the evaporation pipe and return air pipeline as much as possible. In addition, insufficient refrigerant is also a factor in low suction pressure. Refrigerant must be replenished in time after leakage. Practice has shown that reducing the exhaust temperature by increasing the suction pressure is simpler and more effective than other methods. The main reason for excessive exhaust pressure is that the condensation pressure is too high. Insufficient heat dissipation area of the condenser, scale accumulation, insufficient cooling air volume or water volume, too high cooling water or air temperature, etc. can lead to excessive condensation pressure. Choosing a suitable condensation area and maintaining adequate cooling medium flow is very important.

Air compressor overheating protection is to protect equipment and improve work efficiency. Regular cleaning and maintenance of key equipment such as air filters, coolers, and motors, checking and maintaining the quality and quantity of lubricating oil, reasonably arranging the use load and operating time, and providing appropriate environmental conditions are all ways to prevent and solve air compressor overheating.