螺杆式空压机检修前后注意哪些事情？
What should we pay attention to before and after the maintenance of screw air compressor?
答：（1）维修保养前应停止机组运行，关闭排气阀门，断开机组电源并挂上警告牌，放空机组内压力（各压力表显示为“0”）后才能开始维修工作。拆卸高温组件时，必须待温度冷却到环境温度后方可进行。
Answer: (1) before maintenance, stop the operation of the unit, close the exhaust valve, disconnect the power supply of the unit, hang a warning board, and vent the pressure in the unit (each pressure gauge shows "0"). When disassembling high-temperature components, it must be carried out after the temperature is cooled to the ambient temperature.
（2）用正确的工具维修空压机。
(2) Repair the air compressor with the correct tools.
（3）推荐使用螺杆空压机专用油，检修后不同牌号的润滑油不允许混用。
(3) It is recommended to use special oil for screw air compressor. After maintenance, lubricating oil of different brands is not allowed to be mixed.
（4）空压机原装备件是专门设计、制造的，推荐使用正宗备件，以保证空压机工作的可靠性、安全性。
(4) The original spare parts of the air compressor are specially designed and manufactured. It is recommended to use authentic spare parts to ensure the reliability and safety of the air compressor.
（5）没有得到制造厂的许可，不要对压缩机作任何影响安全性、可靠性的改动或增加任何装置。
(5) Do not make any changes affecting the safety and reliability of the compressor or add any devices without the permission of the manufacturer.