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First, check whether power is supplied to the motor. If the unit is about to start up, also verify that the button to shut down the reactive effluent air cooler has been reset. Before starting the motor, it is also necessary to turn the shaft by hand to check whether its rotation is normal. After the high-pressure air cooling system is put into use, it is necessary to check whether the temperatures of each branch are consistent; if any uneven flow occurs, it should be addressed promptly. The operating air-cooled fans should be kept as evenly distributed as possible. For a single air-cooled unit that has been repaired and put back into operation, water injection should be initiated as soon as possible to prevent the precipitation of ammonium salts, which could affect cooling efficiency and flow rates and exacerbate equipment corrosion. Areas prone to corrosion are generally elbows and other places where turbulence occurs; the presence of Cl- and oxygen accelerates corrosion. The corrosion rate is also related to the flow rate of the medium; if the flow rate is too low, the corrosive agents tend to accumulate, thereby exacerbating corrosion ； When the flow rate is too high, erosion combined with the corrosion caused by NH4HS intensifies as well. Therefore, it is necessary to select an appropriate flow rate and be sure to avoid flow deviation, which should be taken into account at the time of operation. The flow velocity of the medium inside the carbon steel is 4.3–6.1 m/s. The conditions under which corrosion occurs in high-pressure air-cooled systems are as follows: when the molar concentration is 2S]·3]＜0.07, no corrosion occurs; corrosion can still occur when it is between 0.07 and 0.2; corrosion definitely occurs when it is greater than 0.5. In highly acidic water with an NH4HS concentration of ≤4%, the likelihood of corrosion is low. When injecting softened water at high-temperature areas, it is necessary to ensure that, while maintaining an adequate amount of water injection, 20% of the total water injected remains in liquid form at those areas. This is to prevent all the water from vaporizing and causing the environment to become acidic, or to avoid excessive local concentrations of salt that could lead to crystallization when the first drops of water begin to condense. For high-pressure air cooling, 16MnR(HIC) or carbon steel is generally used; the operating temperature for carbon steel should be below 200°C, otherwise hydrogen corrosion will occur (Nelson curve).