1、 Check the start solenoid valve. When the generator is running, people have summed up a set of inspection methods of "one look, two listen, three touch and four smell". Listening at startup is a very important step. Take the original Cummins generator in the United States as an example. Just press the start button and start it after three seconds. Two "clicks" can be heard within three seconds. Once the second sound is not heard, check whether the starting solenoid valve works normally. If the solenoid coil is burnt out, of course, the generator cannot be started.

二，电池组的检查。由于备用电源不是经常投入使用，发电机是否能正常启动，关键在于电池的维护保养。如电池组出现了问题，比较常见的情况是：有电压无电流，这时可以听到启动电机内电磁阀吸合的声音，但带不动连轴。电池组出现问题导致无法停机原因有三：1.在试机时采用停止为电池充电的方式，会导致电池电量不足。2.采用机械油泵由皮带传动，额定转速下的泵油量很大，然而电池组供电不足，导致停机时截流阀里的弹簧片由于电磁阀吸力不够而不能封死从四个出油孔喷出的燃油，造成不能停机。3.国产电池通常寿命为两年，没有定期更换。

2、 Inspection of battery pack. Since the standby power supply is not often put into use, the key to whether the generator can start normally lies in the maintenance of the battery. If there is a problem with the battery pack, the more common situation is: there is voltage and no current. At this time, the sound of the solenoid valve in the starting motor can be heard, but the coupling cannot be moved. There are three reasons why the battery pack cannot be shut down due to problems: 1 Stopping charging the battery during test run will lead to insufficient battery power. 2. The mechanical oil pump is driven by the belt, and the amount of pump oil at the rated speed is large. However, the power supply of the battery pack is insufficient, resulting in the failure of the spring plate in the shut-off valve to seal the fuel ejected from the four oil outlet holes due to the insufficient suction of the solenoid valve during shutdown, resulting in the failure of shutdown. 3. Domestic batteries usually have a service life of two years and are not replaced regularly.

三，柴油、润滑油的检查。因为机组长期处于静态，机组本身各种材料会与机油、冷却水、柴油、空气等发生复杂的化学、物理变化，从而将机组“放”坏。为此应注意油的问题。为了消防安全，通常都把柴油油箱放在一个密闭的房间内，由于大气中水气因温度的变化而发生冷凝现象，结成水珠挂附在油箱内壁，流入柴油中，致使柴油含水量超标，这样的柴油进入柴油机高压油泵，会锈蚀精密耦合件———柱塞，严重损坏机组。

3、 Inspection of diesel and lubricating oil. Because the unit is static for a long time, various materials of the unit itself will undergo complex chemical and physical changes with engine oil, cooling water, diesel oil, air, etc., which will "blow" the unit. Therefore, attention should be paid to the problem of oil. For the sake of fire safety, the diesel oil tank is usually placed in a closed room. Due to the condensation of water and gas in the atmosphere due to the change of temperature, water droplets form and hang on the inner wall of the oil tank and flow into the diesel, resulting in the water content of the diesel exceeding the standard. When such diesel enters the high-pressure oil pump of the diesel engine, it will rust the precision coupling plunger and seriously damage the unit.

1、安装地点需通风良好，发电机端应有足够的进风口，柴油机端应有良好的出风口。出风口面积应大于水箱面积1.5倍以上。

1. The installation site shall be well ventilated. There shall be sufficient air inlet at the generator end and good air outlet at the diesel engine end. The air outlet area shall be more than 1.5 times larger than the water tank area.

2、安装地的周围应保持清洁，避免在附近放置能产生酸性、碱性等腐蚀性气体和蒸汽的物品。有条件的应配置灭火装置，消防还是有必要重视的。

2. The surroundings of the installation site shall be kept clean and articles that can produce acidic, alkaline and other corrosive gases and vapors shall not be placed nearby. If conditions permit, fire extinguishing devices should be equipped, and fire fighting is still necessary to pay attention to.

3、在室内使用，必须将排烟管道通导室外，管径必须≥消音器的出烟管直径，所接之管路的弯头不宜超过3个，以保证排烟畅通，并应将管子向下倾斜5-10度，避免雨水注入；若排气管时垂直向上安装的，则必须加装防雨罩。

3. For indoor use, the smoke exhaust pipe must be connected to the outside, the pipe diameter must be ≥ the diameter of the smoke outlet pipe of the silencer, and the elbow of the connected pipeline should not exceed 3 to ensure smooth smoke exhaust, and the pipe should be inclined downward by 5-10 degrees to avoid rainwater injection; If the exhaust pipe is installed vertically upward, a rain cover must be installed.

4、基础采用混凝土时，在安装时须用水平尺测其水平度，使机组固定于水平的基础上。机组与基础之间应有专用防震垫或用底脚螺栓。

4. When the foundation adopts concrete, the levelness must be measured with a level ruler during installation to fix the unit on a horizontal foundation. Special shockproof pads or foot bolts shall be provided between the unit and the foundation.

5、机组外壳必须有可靠的保护接地，对需要有中性点直接接地的发电机，则必须由专业人员进行中性接地，并配置防雷装置，严禁利用市电的接地装置进行中性点直接接地。

5. The shell of the unit must have reliable protective grounding. For the generator that needs to be directly grounded at the neutral point, the neutral grounding must be carried out by professional personnel and equipped with lightning protection device. It is strictly prohibited to use the grounding device of municipal power for direct grounding at the neutral point.

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