The diagnosis and troubleshooting methods for the cooling system of
diesel generator sets mainly include the following aspects:
1. Troubleshooting of coolant or oil leakage: Check and tighten the connecting bolts at the radiator, oil filter, cylinder head, and oil pump, and check for loose or damaged connections. If a leak is found, the corresponding seal should be replaced immediately.
2. Troubleshooting of high coolant temperature: Check if the coolant level is within the normal range, and add it promptly if it is insufficient. At the same time, check if the coolant has deteriorated, and replace it promptly if it has deteriorated. In addition, check whether the radiator is dirty or blocked. If it is dirty or blocked, it should be cleaned in a timely manner.
3. Troubleshooting of low oil pressure: Check if the oil level is within the normal range, and add it promptly if it is insufficient. At the same time, check whether the engine oil has deteriorated, and if it has deteriorated, replace it in a timely manner. In addition, check if the oil pump is working properly. If it is not working properly, it should be repaired or replaced in a timely manner.
4. Troubleshooting of engine overheating: Check if the coolant is sufficient, and add it promptly if it is insufficient. At the same time, check whether the radiator is dirty or blocked. If it is dirty or blocked, it should be cleaned in a timely manner. In addition, check whether the engine oil is normal. If it is not normal, it should be replaced or repaired in a timely manner. If the engine overheating is caused by long-term high load operation, the engine should be allowed to rest and cool down appropriately.
5. Troubleshooting of abnormal noise in the cooling system: Check if the radiator fan is working properly. If it is not working properly, it should be repaired or replaced in a timely manner. At the same time, check if the coolant is flowing smoothly, and if there is any blockage, it should be cleaned in a timely manner. In addition, check if the water pump is working properly. If it is not working properly, it should be repaired or replaced in a timely manner.
6. Circulating water volume issue: The reason for poor cooling effect of diesel engines may be due to insufficient cooling water volume. When the amount of cooling water is insufficient, the diesel engine cannot receive effective cooling, resulting in overheating. In addition, scaling and blockage of the circulation system pipeline can also lead to a decrease in cooling efficiency. Therefore, it is necessary to regularly check the cooling water volume and circulation system pipelines to ensure that they are unobstructed.
7. Low water supply power of the water pump: Low water supply power of the water pump can lead to a decrease in the flow rate of the cooling circulating water, thereby affecting the cooling effect. You can judge whether the water pump is working properly by holding the radiator outlet pipe and feeling the flow of circulating water. If the flow rate is insufficient, it indicates that the water pump is operating abnormally and requires maintenance.
8. Thermostat malfunction: The thermostat is a valve that controls the flow path of the coolant. If the thermostat fails, the coolant cannot maintain a circulating temperature, which may cause the engine to overheat. It is necessary to regularly check the working status of the thermostat to ensure its normal operation.
Through the above methods, common faults in the cooling system of diesel generator sets can be effectively diagnosed and eliminated, ensuring the normal operation of the generator sets.
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