Precautions for Maintenance of Diesel Generator Radiator

The whole body of the generator set is composed of many parts, and each part cooperates with each other to make the diesel generator set work normally. The radiator of Yuchai generator plays an important role in ensuring the normal operation of the unit. Therefore, whether it is other parts of the unit or the maintenance of the radiator is very important. The maintenance cycle of the radiator of the diesel generator set is carried out every 200h of operation!

1. External cleaning of the radiator of the diesel generator set:

Spray with hot water with an appropriate amount of detergent, and pay attention to spraying steam or water from the front of the radiator to the fan. When spraying, cover the diesel engine and alternator with a cloth. When encountering a large amount of stubborn deposits on the radiator, the radiator should be removed and immersed in hot alkaline water for about 20 minutes, and then cleaned with hot water.

2. the internal cleaning of the radiator of the diesel generator set:

Drain the water in the radiator, then disassemble and seal the place where the radiator is connected to the pipe; pour 4% acid solution at 45 degrees into the radiator, drain the acid solution after about 15 minutes, and check the radiator; if If there is still scale, wash it again with 8% acid solution; after descaling, use 3% alkali solution to neutralize it twice, and then rinse it with water for more than three times;

3. After the above is completed, check whether the radiator of the diesel generator set is leaking. If it is leaking, it should be repaired in time. If it is not leaking, it should be reinstalled.

4. Matters needing attention in the use of Yuchai generator radiator

(1) Choose clean soft water

Soft water usually includes rainwater, snow water and river water, etc. These waters contain less minerals and are suitable for use by engine units. However, well water, spring water, and tap water contain high mineral content. These minerals are easily deposited on the walls of the radiator, water jacket, and water channel when heated, forming scale and rust, which deteriorates the heat dissipation capacity of the unit and easily causes the engine of the unit to malfunction. overheat. The water added must be clean. Impurities in the water will block the waterway 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 and adding lye (caustic soda is commonly used).

(2)When “opening the pot”, anti-scald

After the diesel generator set radiator is “boiled”, do not blindly open the water tank cover to prevent scalding. The correct way is: idle for a while before turning off the generator, and then unscrew the radiator cap after the temperature of the generator set drops and the pressure of the water tank drops. When unscrewing, cover the lid with a towel or car cloth to prevent hot water and steam from spraying on the face and body. Do not look directly at the water tank with your head down. After unscrewing it, remove your hand quickly. When there is no heat or steam, take off the water tank cover to prevent scalding.

(3)It is not advisable to release water immediately when the temperature is high

Before the Yuchai generator is turned off, if the engine temperature is very high, do not stop the engine immediately to drain the water, unload the load first, make it run at idle speed, and then drain the water when the water temperature drops to 40-50°C, so as to prevent the cylinder block and cylinder in contact with water. The temperature of the outer surface of the cover and the water jacket suddenly drops due to the sudden discharge of water, and the temperature shrinks sharply, while the temperature inside the cylinder body is still high, and the shrinkage is small.

(4) Regularly change the water and clean the pipeline

It is not recommended to change the cooling water frequently, because the minerals in the cooling water have been precipitated after a period of use, unless the water is already very dirty, which may block the pipeline and radiator, do not replace it lightly, because even if the newly replaced cooling water passes through It has been softened, but it still contains certain minerals, and these minerals will deposit in the water jacket and other places to form scale. The more frequent the water is replaced, the more minerals will be precipitated, and the thicker the scale will be. Change the cooling water regularly.

Post time: Dec-09-2022