After the cold air enters the compressor, it will produce a large amount of water vapor at high temperature, which will increase the burden of water vapor filtration after the compressor. However, for customers with low requirements for compressed air, a certain humidity in the compressed air is acceptable. After entering the air bag, the air enters the production area through pipes and is used by users. Some of these pipes are buried underground, and some are exposed in the air. When the pipe is exposed in cold air, some moisture may not be generated due to the low level, and some may even fail to meet the standard again due to the increase of moisture.

After shutdown in winter, be sure to vent all gas, sewage and water, and vent water, gas and oil in various pipelines and gas drums. When the unit works in winter, the temperature is relatively high. After shutdown, due to the low external temperature, a large amount of condensate will be generated after air cooling, which exists in various control pipes, which is easy to lead to control pipe blockage, expansion and crack, etc.