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6 major precautions in the use of diesel generator radiators

May 17, 2022
The radiator of diesel generator set is one of the indispensable and important components in the configuration of the unit, and the use and maintenance of the radiator of the unit is also an important task that cannot be ignored. If the radiator of the diesel generator set cooling system cannot reduce the heat generated during the operation of the generator set, it will cause losses to various components, which will affect the output power of the diesel generator set, and even damage the diesel generator set. The following generator manufacturers JUNVOCH The 6 major precautions in the use of the diesel generator set radiator are sorted out for you, hoping to help users to better maintain the radiator of the generator set.
1. Do not add water after starting
Some users, in order to facilitate starting in winter, or because the water source is far away, often adopt the method of starting first and then adding water, which is very harmful. After the diesel generator set is dry started, because there is no cooling water in the body, the engine parts of the unit heat up rapidly, especially the temperature of the cylinder head and the water jacket outside the fuel injector of the diesel engine is particularly high. If cooling water is added at this time, the cylinder head And the water jacket is prone to cracks or deformation due to quenching. When the engine temperature is too high, the engine load should be unloaded first and then idling at low speed, and cooling water should be added when the water temperature is normal.
2. Use clean soft water
Soft water usually includes rainwater, snow water and river water, etc. These waters contain few minerals and are suitable for use by the engine of the unit. However, well water, spring water and tap water have high content of minerals. These minerals are easily deposited on the radiator wall, water jacket and water channel wall to form scale and rust, which makes the heat dissipation capacity of the unit worse, and easily leads to the engine of the unit. overheat. The added water must be clean. The impurities in the water will block the water channel and increase the wear of the pump impeller and other components. If hard water is used, it must be softened in advance. The softening methods usually include heating method and adding lye (usually caustic soda) method.
3. When "opening the pot", prevent burns
After the radiator of the unit is "boiled", do not blindly open the water tank cover to prevent burns. The correct way is: idling for a while before turning off the generator, and then unscrew the radiator cover after the temperature of the generator set and the pressure of the water tank drop. When unscrewing, cover the lid with a towel or car cloth to prevent hot water and steam from being sprayed on your face and body. Do not look down at the water tank with your head, and then quickly withdraw your hands after unscrewing it. When there is no hot air or steam, remove the water tank cover to prevent burns.
4. Heating water in winter
In the cold winter, the diesel generator set is difficult to start. If cold water is added before starting, it is easy to freeze in the lower chamber of the water tank and the water inlet pipe during the process of adding water or when the water is not started in time, causing the water to fail to circulate. , and even make the radiator burst. Adding hot water, on the one hand, can increase the temperature of the unit to facilitate starting; on the other hand, it can avoid the above freezing phenomenon as much as possible.
5. Antifreeze should be of high quality
At present, the quality of antifreeze on the market is uneven, and many are shoddy. If the antifreeze does not contain preservatives, it will seriously corrode the engine cylinder head, water jacket, radiator, water blocking ring, rubber parts and other components, and at the same time generate a large amount of scale, which will cause poor engine heat dissipation and cause overheating failure of diesel generator sets. Therefore, we must choose the products of regular diesel generator set manufacturers.
6. Regularly change the water and clean the pipeline
It is not recommended to change the cooling water frequently, because after a period of use, the minerals of the cooling water have been precipitated. Unless the water is very dirty, it may block the pipeline and the radiator. Do not replace it easily, because even the newly replaced cooling water has passed through. It has been softened, but it still contains certain minerals. These minerals will be deposited in the water jacket and other places to form scale. The more frequently the water is replaced, the more minerals are precipitated, and the thicker the scale will be. Change the cooling water regularly. When replacing, the cooling pipeline should be cleaned, and the cleaning solution can be prepared with caustic soda, kerosene and water. At the same time, maintain the water discharge switches, especially before winter, replace the damaged switches in time, and do not use bolts, sticks, rags, etc. to replace them.