1. Preparation before startup. Every time before starting up, check whether the cooling water or antifreeze in the diesel engine water tank meets the requirements, and fill it up if it is missing. Pull out the oil dipstick to check whether there is a lack of lubricating oil. If there is a lack of lubricating oil, add it to the specified "static full" scale mark, and then carefully check whether the relevant components have hidden trouble. If any fault is found, it can be started up only after it is eliminated in time.

2、严禁带负荷启动柴油机。柴油机在启动前要注意发电机的输出空气开关必须处在关闭状态。普通型发电机组柴油机启动后要经过3-5分钟的怠速运转（700转/分钟左右）冬天气温偏低，怠速运转时间要适当延长几分钟。柴油机启动后首先要观察机油压力是否正常和有无漏油、漏水等不正常现象，（正常情况下机油压力必须在0.2MPa以上）如发现异常要立即停机检修。如无异常现象将柴油机转速提升到额定转速1500转/分钟，此时发电机显示频率50HZ，电压400V，则可以合上输出空气开关投入使用。发电机组不允许长时间空载运行。（因为长时间空载运行会使柴油机喷油嘴喷出的柴油不能完全燃烧导致积碳，造成气门、活塞环漏气。）如果是自动化发电机组，则不需要怠速运行，因为自动化机组一般都配备水加热器，使柴油机缸体始终保持在45Co左右，柴油机启动后可在8-15秒内正常送电。

2. It is forbidden to start the diesel engine with load. Before starting the diesel engine, pay attention to that the output air switch of the generator must be closed. After starting the diesel engine of ordinary generator set, it needs to go through 3-5 minutes of idle operation (about 700 RPM). The temperature is low in winter, and the idle operation time should be appropriately extended for several minutes. After starting the diesel engine, first observe whether the oil pressure is normal and whether there are abnormal phenomena such as oil leakage and water leakage, (under normal conditions, the oil pressure must be above 0.2MPa). In case of any abnormality, shut down immediately for maintenance. If there is no abnormality, increase the diesel engine speed to the rated speed of 1500 rpm. At this time, the generator shows a frequency of 50Hz and a voltage of 400V, then close the output air switch and put it into use. The generator set is not allowed to operate without load for a long time. (because long-term no-load operation will make the diesel injected from the diesel engine fuel injection nozzle unable to burn completely, resulting in carbon deposition and air leakage of the valve and piston ring.) if it is an automatic generator set, it is not necessary to run at idle speed, because the automatic generator set is generally equipped with water heater to keep the diesel engine cylinder at about 45co, and the diesel engine can be powered normally within 8-15 seconds after starting.

3、注意观察运行中的工作状态。发电机组在工作中，要有专人值班，经常注意观察可能出现的一系列故障，尤其要注意机油压力、水温、油温、电压、频率等重要因素的变化。另外还要注意备有足够的柴油，在运行中如燃油中断，客观上造成带负荷停车，有可能会导致发电机励磁控制系统及相关元器件的损坏。

3. Pay attention to the working state during operation. During the operation of the generator set, a specially assigned person shall be on duty and often pay attention to observing a series of possible faults, especially the changes of important factors such as oil pressure, water temperature, oil temperature, voltage and frequency. In addition, it should be noted that sufficient diesel oil is available. If the fuel oil is interrupted during operation, it will objectively cause on-load shutdown, which may cause damage to the generator excitation control system and related components.

4、严禁带负荷停机。每次停机前，必须先逐步切断负荷，然后关闭发电机组输出空气开关，将柴油机减速到怠速状态运转3-5分钟左右再停机。

4. It is forbidden to stop with load. Before each shutdown, the load must be cut off gradually, then the output air switch of the generator set must be closed, and the diesel engine shall be slowed down to idle speed for about 3-5 minutes before shutdown.