Diesel Generator sets, as backup power sources and main power sources in the field, often only start at critical moments. Many units are not damaged, but have been idle for a long time, neglected to maintain, or operated improperly, resulting in the inability to start normally when power is truly needed. Scientific daily use and periodic maintenance are key to ensuring the reliable operation of the
Generator set and extending its service life. This article explains the key points of using and maintaining diesel generator sets from five aspects: daily operation standards, maintenance of oil filters, maintenance of cooling systems, electrical inspection of batteries, and long-term storage management.
1、 Standardize daily operations and protect the unit from the source
The service life of a generator set largely depends on whether the daily operation is standardized. Before each start-up, check the oil level, coolant level, and Fuel stock, inspect the appearance of the unit for oil and water leaks, check for loose fasteners, and confirm that the control panel has no fault alarms.
When starting, first preheat the engine by running it at low speed without load. After the engine cooling water temperature and oil temperature reach the normal range, gradually load the engine. It is strictly prohibited to directly load the refrigeration unit with a large load, as it will aggravate the wear of the cylinder and piston. Before shutting down, the load should be unloaded and the unit should be allowed to idle for a few minutes to evenly dissipate heat from the turbocharger and engine before shutting down to avoid damage to high-temperature components due to sudden shutdown.
During operation, operators should pay attention to the sound, vibration, and exhaust color of the unit, and observe whether the instrument data is normal. When there is abnormal noise, black smoke, or abnormal oil pressure and water temperature, the machine should be stopped immediately for troubleshooting, and it is strictly prohibited to forcibly operate the unit with a problem.
2、 Proper maintenance of engine oil and three filters to safeguard the power core
Engine oil is the "blood" of the engine, and the three filters are the protective barrier. They are of utmost importance in maintenance. Engine oil will gradually oxidize, deteriorate, and adsorb impurities in high temperature and high pressure environments, and needs to be replaced in a timely manner according to the manufacturer's prescribed cycle. When changing the engine oil, the oil filter should be replaced simultaneously, and regular engine oil that meets the viscosity grade and quality grade requirements should be selected. Poor quality engine oil will significantly accelerate engine wear.
The air filter is responsible for filtering the air entering the cylinder. It works in a dusty environment and needs to be checked and cleaned frequently. If the filter element is damaged or blocked, it should be replaced in a timely manner to prevent dust from entering the cylinder and causing it to pull. The fuel filter filters out fuel impurities, and blockage can cause insufficient fuel supply and difficulty starting. It needs to be drained and replaced regularly. The coolant filter filters out impurities in the coolant and keeps the cooling system clean. The replacement cycle of the three filters should be carried out in conjunction with the operating hours and the manufacturer's maintenance manual, and recorded truthfully.
3、 Maintain the cooling system to prevent high temperature faults
Diesel generator sets generate a large amount of heat during operation, and once the cooling system fails, it can easily cause serious damage such as high-temperature cylinder pulling and cylinder head cracking. Daily maintenance should regularly check the coolant level. If the coolant is insufficient, it should be replenished with the same brand and model of coolant in a timely manner. Mixing different models is strictly prohibited. After long-term use, the coolant will fail and scale, and it needs to be replaced periodically and the cooling system cleaned.
The radiator is an important component of the cooling system, and it is necessary to regularly clean the dust, fluff, and debris on the heat sink to maintain smooth ventilation and heat dissipation. Check the tension of the cooling fan and water pump belts. Loose belts can cause poor heat dissipation and abnormal speed, while tight belts can accelerate bearing wear. At the same time, check for leaks in the cooling pipelines and joints. In cold regions during winter, use antifreeze coolant with a suitable freezing point to prevent the body from freezing and cracking.
4、 Check the battery and electrical system to ensure smooth start-up
Most generator sets come with their own starting batteries, and the battery status directly determines whether they can start smoothly. Long term use of batteries will naturally discharge. When the unit is shut down for a long time, it is necessary to regularly recharge the batteries to avoid battery damage caused by power loss. Check the battery level and add distilled water when the electrolyte is insufficient; Check for oxidation and corrosion on the pole, and maintain a firm connection and good contact.
During the operation of the unit, pay attention to the power generation voltage of the charging system, confirm that the charger is working properly, and ensure that the battery can be fully charged during operation. At the same time, check whether the control circuit and sensor wiring are secure, whether there is aging or damage, and whether the parameters and alarm functions of the controller display screen are normal. Electrical system inspection is recommended to be carried out by professionals to prevent the risk of electric shock.
5、 Pay attention to long-term storage and seasonal maintenance
Many backup generator sets are stored in a shutdown state for a long time, and improper storage management can make it difficult to start the units. Before long-term storage, a comprehensive maintenance should be carried out, including changing the engine oil, cleaning the unit, and injecting an appropriate amount of rust inhibitor into the cylinder to prevent internal corrosion. The fuel system can add fuel stabilizers to prevent fuel oxidation, deterioration, and blockage of the fuel circuit.
The unit should be stored in a dry, ventilated, and non corrosive gas environment, avoiding exposure to sunlight and rain. During the long-term shutdown period, it is recommended to start running the unit without load for a period of time every month to allow the unit to fully operate, lubricate, and charge the battery. The inspection frequency should be increased accordingly during seasons such as rainy season and high temperature. Regular testing can also detect potential faults in a timely manner, ensuring that the unit is always in a usable state.
Conclusion
The reliability of diesel generator sets comes from standardized operation and persistent maintenance. Taking a closer look before starting, listening more during operation, and changing one track during maintenance can all ensure the stable performance of the unit at critical moments. FARIZON Power recommends that users establish a unit maintenance ledger and scientifically maintain it on a periodic basis, so that each generator set can respond immediately when needed, providing solid power support for production and operation.
