1. Check whether the oil pressure, oil temperature, cooling water temperature, charging current and other instrument indications are normal. Generally, the oil pressure of the unit shall be 150 ~ 390kpa, the oil temperature shall be 70 ℃ ~ 90 ℃, the water inlet temperature shall be 55 ℃ ~ 65 ℃, and the water outlet temperature shall be 75 ℃ ~ 85 ℃.

2、观察发电机的电压、电流和频率是否正常。在负荷正常时，频率为50Hz，电压应为额定值，电流不超过额定值，三相电流不平衡度应不超过25%。

2. Observe whether the voltage, current and frequency of the generator are normal. When the load is normal, the frequency is 50Hz, the voltage shall be rated, the current shall not exceed the rated value, and the three-phase current imbalance degree shall not exceed 25%.

3、观察柴油发电机的颜色是否正常。正常的排气颜色为无色或淡灰色，不正常时为深灰色，超负荷时为黑色。

3. Observe whether the color of diesel generator is normal. The normal exhaust color is colorless or light gray, dark gray when abnormal, and black when overload.

4、检查机组有无漏油、漏水、漏风、漏气和漏电现象。

4. Check the unit for oil leakage, water leakage, air leakage, air leakage and leakage.

5、检查发电机电刷火花是否正常。若有异常情况、要立即停机检查滑环、换向器、电刷及刷架等，以免烧坏滑环和换向器。

5. Check whether the brush spark of generator is normal. In case of any abnormality, stop the machine immediately to check the slip ring, commutator, brush and brush holder, etc., so as to avoid burning the slip ring and commutator.

6、注意机组运转有无异常响声、震动和焦臭味。

6. Pay attention to whether the unit operates with abnormal sound, vibration and odor.

7、检查发电机外壳和轴承的温度是否正常。

7. Check whether the temperature of generator shell and bearing is normal.

8、检查各紧固螺栓有无松动，接地连接是否可靠。

8. Check whether the fastening bolts are loose and whether the grounding connection is reliable.

9、检查控制盘有无异常情况。

9. Check the control panel for abnormalities.

10、严格防止柴油机低温低速，高温超速或长期超载运行。

10. Strictly prevent the diesel engine from low temperature and low speed, high temperature overspeed or long-term overload operation.

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