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1. Effects of extreme cold on air compressors: When cold air enters an air compressor, it generates a large amount of water vapor upon encountering high temperatures. This increases the burden on the post-treatment equipment responsible for filtering out water vapor; therefore, it is necessary to regularly drain the moisture from such equipment. Compressed air enters the production area through pipes to be used by users; some of these pipes are buried underground, while others run openly in the air. Walking along exposed pipes in cold weather may result in the formation of moisture due to low temperatures; in some cases, this increased moisture can even affect the normal use by users. Note: After shutting down the unit in winter, it is essential to drain all gases, waste fluids, and water from the system. Water, gas, and oil contained in various pipes and air receivers must also be removed. During operation in winter, the temperature is relatively high; once the unit is shut down and the external temperature drops, condensation water is generated in large quantities. This water can accumulate in the control pipes, leading to blockages or cracks in those pipes. The oil circuit system is an important part of the compressor’s circulation system. During normal operation, the oil circuit system experiences friction due to the rotation of the machine, and the heat generated by this friction raises the temperature of the lubricating oil. Low temperatures are very beneficial for oil circuit systems that require cooling. However, for standby equipment or air compressors that are not used throughout the year, when they are restarted in low temperatures, the lubricating oil in the oil circuit may solidify due to the cold. This can lead to malfunctions upon startup. Therefore, it is necessary to inspect the oil circuit system to ensure that the lubricating oil remains in a normal state. Regarding the storage of lubricant, it is generally required to be kept in a heated indoor area; if stored outdoors, the lubricant may freeze due to low temperatures, making it unavailable for use when needed. The low temperatures in winter have both positive and negative effects on air compressors; it is necessary to pay close attention not only during their operation but also when it comes to maintenance and the storage of spare parts. Note that in low-temperature conditions, it is necessary to regularly monitor the operation of the air compressor and carry out periodic maintenance to prevent failures, thereby ensuring the safe and smooth progress of production. For some electric air compressors, during winter when they are first started, the viscosity of the oil in all lubricated parts of the unit is relatively high. Additionally, in some mines, the voltage level is somewhat low. This can make it difficult to start the compressor initially. The common practice is to manually rotate the unit 2–3 times and then jog-start the air compressor 3–4 times. After that, let the compressor run for 10 minutes before shutting it down; upon restarting it afterward, the unit generally operates normally. III. Key points for protecting air compressors in winter 1. Take proper measures to protect the electronic drain valves and piping systems from the cold. The air compressed by the air compressor contains some moisture, and when this condensed water is discharged through the automatic drain valves, it can freeze in the pipes or other components due to the low temperatures outside. 2. Take measures to prevent low temperatures in the machine room; as temperature drops, the viscosity of the air compressor’s lubricating oil increases, which can have a significant impact on restarting the compressor after it has been shut down for some time, and it also affects the machine’s lifespan. 3. Verify the operating status of the automatic drain valves on air compressors, air receivers, dryers, and filters. When shutting down for the day or when the equipment is turned off, ensure that the drain valves on pipes, air receivers, dryers, etc., are fully opened to allow all condensate to be drained before closing the valves. 4. Maintain the temperature in the air compressor room above zero degrees; close the exhaust vents or adjust them to direct airflow indoors in order to regulate the indoor temperature. When the compressor is shut down or not running, it is necessary to use a heater appropriately to maintain the desired temperature. 5. Management of the air compressor during shutdown: After the compressor is shut down, the gas must be released until the gauge shows 0.0 bar, after which the valve should be closed. Activate the automatic drain valves for the air compressor, air tank, and dryer. Close after ensuring that the air and condensate water are completely drained. During long periods of downtime, it must be started once a week, and the above procedure should be repeated after 3 hours. In cold weather with low temperatures, the likelihood of failures in air compressor units increases. Therefore, it is necessary to keep a close eye on the operating condition of the air compressor, and to carry out regular maintenance in order to prevent failures and ensure the safety of production as well as the smooth progress of operations.