Compressed air system winter care tips

First, environmental temperature control

Do a good job of air compressor station indoor cold protection measures to maintain the station temperature above freezing, the temperature of the equipment before the start of more than 2 ℃; outdoor installation of piping, valves, etc., should be well protected from freezing, and the key position should be equipped with heating equipment.

Tips: low temperature environment, pay attention to the equipment around the condensate/cooling water leakage, to avoid icing caused by the operator slipping and falling.

Precautions for winter operation of two-stage air compressor
 1. Start-up operation

   * The viscosity of lubricating oil increases under low temperature, which may cause a series of problems, and it is necessary to pay extra attention to the status of the lubricating system.

   *Pay attention to the ambient temperature when starting up the compressor. If the ambient temperature is lower than the specified temperature in the manual, a heating device should be equipped.

   * High viscosity at low temperatures will reduce the passing ability of the oil filter, thus making the compression chamber of the micro-oil compressor in the initial stage of the start-up of the oil volume is small; it is recommended to use the original lubricating oil, it is recommended to appropriately increase the frequency of replacement of oil filters in low-temperature environments, and after a long period of shutdown after low-temperature environments start-up, the oil filter should be replaced.

   * Low temperature caused by the increase in condensate during operation, timely oil analysis to monitor changes in water content.

   *Micro-oil air compressors equipped with heat recovery system should cut off the oil valve connecting to the heat recovery system before starting the machine; after the compressor is loaded normally, then open the valve to switch to the heat recovery state.

   *Check whether the oil level is normal, and replenish the lubricating oil if necessary.

   *For water-cooled units, check the water cooler to ensure that the water circuit is smooth and free of leakage.

   *For centrifugal compressor, check the running current and adjust the load set point if necessary to avoid the equipment running under load for a long time, which may cause motor overload damage.

  2. Operation after shutdown

   *After the system is shut down from a high-temperature operating state, the gas in the compression chamber, piping, and storage tank will precipitate a large amount of condensate in a low-temperature environment. In order to prevent the condensate from freezing and blocking the system or even freezing and cracking the devices, the condensate in the compression chamber, pipeline and gas storage tank should be discharged in time when the system temperature drops to the ambient temperature.

   *For water-cooled units, if there may be low temperature conditions after shutdown, the compressor water cooler should be emptied of residual cooling water, close the inlet and outlet water valves; if necessary, compressed air should be used to purge the evacuation, in order to avoid icing caused by the expansion of the cooling pipe cracks.

   * Long-term shutdown of oil-free air compressor equipment, it is recommended to start once a week.