DCA65 anti-rust water is Fleetguard brand, the specification is 1.89 liters. It has three functions: anti-rust, cooling and anti-freeze. It is an essential consumable for the maintenance of the various generator water tanks. Generally speaking, the quantity added depends on the size of the generator. For units below 450 kW, add 3 to 4 bottles. For 450-800 kW units add approximately 6 bottles and for 800-1200 kW units add 10-12 bottles. Units with higher requirements may choose to add all DCA65L anti-rust water for best results.
The importance of DCA in generator set operation: The main cooling material when the generator is operating is water. During operation, water in the water tank flows into the generator set when the DCA is activated. added to water it will cool. The effect is better and theHigh water temperature is avoided. At the same time, after shutdown, water will also remain in the body, and DCA will prevent the body from rusting. Another function of DCA is to prevent freezing. In cold weather, it is easier to start the generator, thus better protecting the generator.
What should I do if water leaks from the diesel generator body when water is added to the water tank?
20 kW
Diesel generator
There is too much scale in the water tank Too much debris will block the water tank and cause improper ignition, which will cause the generator to overheat and affect the cooling effect, thereby reducing the service life of the diesel generator set. Therefore, empty the water tank of the diesel generator set in time. Scale plays an important role in ensuring the normal operation of the diesel generator set.
The specific operating methodThe guideline is as follows: first use 30 kg of water, 2.5 kg of caustic soda and 0.6 kg of kerosene p>
Cleaning liquid
, pour it into the water tank. Then start the diesel engine and run it at medium speed for about 10 minutes, then stop it. Restart the diesel engine after 10 to 12 hours, run it at medium speed for about 10 minutes, turn off the engine and release the cleaning fluid
. After adding clean cooling water, start the diesel engine and run it at medium speed to clean itself. Repeat this operation 2 to 3 times to completely remove the tartar. After flushing the scale in this manner, antifreeze and rust inhibitor should be added to the cooling water to treat the symptoms but not the root cause. p>
To prevent the formation of tartar.
In short, once scale has accumulated in the water tankof the diesel generator set, it must be promptly removed and repaired to avoid irreparable damage to the operation of the diesel generator set.
accident.
Yanan Engine
Correct methods and precautions for using water in diesel generators
Since the external ambient temperature of the diesel generator set is too low, the cooling water must be drained before shutdown. Do it after 15 minutes when the water temperature has dropped, but not immediately, otherwise the temperature difference between the fuselage and the external environment will be too large, causing some parts of the diesel generator set to deform. , which will affect the performance of the diesel engine (such as cylinder cover deformation, etc.).
When draining water, you can't turn on the water release switch and everything will be fine. You should also pay attention tospecific water flow conditions to see if the water flow is smooth and the water is good. the flow becomes smaller or faster and slower. If these conditions occur, it means that the cooling water contains impurities that hinder the normal flow of water. At this point, it is best to remove the water drain switch and let the cooling water flow directly from the body. If the water flow is still not smooth, use hard, thin steel objects such as wire to dredge it until the water flow is smooth.
When the cooling water stops flowing, it is best to shake the diesel generator several times. At that time, the remaining cooling water that is not easy to flow will flow out because of the cooling water. vibration of the diesel engine, thereby preventing the water plug on the cylinder head from being frozen and the cooling waternt flowed into the oil pan in the future. The operator should also note that if the water drain switch is not removed, the water drain switch must be in the open state after water draining is completed to avoid the remaining cooling water cannot flow temporarily for various reasons and freezes. the corresponding parts of the diesel engine.
Confirmation and repair of radiator leaks:
1. Block the radiator inlet and outlet and install a radiator from the overflow pipe or Connect drain plug. the seal and the pump in 0.15-0.3 kgf/cm2 of compressed air. Place the heater in the pool. If there are bubbles, it's a leak.
2. Check with water. When inspecting, block the water inlet and outlet of the radiator. After filling the inlet with water, observe for water leaks. To make it easier to discover small cracks, you can applycause some pressure on the radiator or cause the radiator to vibrate. lightly, then observe carefully, water flows from the leak. Radiator Welding Repair Radiator welding repair generally uses the brazing method. Before welding, wipe off the oil at the welding place, then use a scraper to scrape the new metal layer, then heat it appropriately. Once the soldering iron is heated, dip it into the zinc oxide solution, then apply solder. After bonding, smooth the solder and use hot water to clean the zinc oxide around the solder to avoid corrosion.
3. Welding repair of upper and lower water chambers. If the leak in the upper and lower water chambers is small, you can repair it directly with solder. If the leak is large, use a purple steel sheet. to repair it. When repairing by pennydage, first apply a layer of solder on one side of the steel skin and the leak area, put the steel skin on the leak area, then use a soldering iron to heat the outside to make Melt the solder and solder the surrounding area. firmly.
The correct use of the water tank of the diesel generator set
The water tank of the diesel generator set plays an important role in the whole body of the generator set. Improper use of water tanks will damage the diesel engine and generator and in severe cases may result in scrapping of the diesel engine. So it is very important to use the water tank of the diesel generator correctly.
1: Choose soft, clean water
Soft water generally includes rainwater, snow water, river water, etc. This water contains few minerals and is suitable for engine use. Well water, spring watere and tap water have a high mineral content. These minerals are easily deposited on the walls of water tanks, water jackets and water channel walls when heated. Scale and rust reduce the heat dissipation capacity of the motor and easily cause engine overheating. The added water must be clean. Impurities in the water will block the water channels and worsen the wear of the water pump impeller and other components. If hard water is used, it must be softened first. Softening methods typically include heating and adding lye (usually caustic soda).
2. Do not start the machine first and then add water
Some users, in order to facilitate starting in winter, or because the water source is far away, often start the machine first, then add water, this method is very harmful. After the startdry engine rage, as there is no cooling water in the body, the engine parts heat up quickly, especially the cylinder head and water jacket outside the diesel engine injector . If cooling water is added at this time, the cylinder head. and the water shirt will do it. It is easy to crack or deform due to sudden cooling. When the engine temperature is too high, the engine load should first be removed and then idle at low speed. When the water temperature is normal, add cooling water.
3. When "boiling", avoid burns.
After the water tank is "boiled", do not blindly open the water tank cover to avoid burns. . The correct approach is: first let the engine idle for a while, then turn off the generator. Wait for the generator temperature to dropand the pressure in the water tank drops before unscrewing the water tank cover. When unscrewing, cover the lid with a towel or car rag to prevent hot water and steam from being splashed on your face and body. Never point your head directly at the water tank and look down. Quickly remove your hands after unscrewing it. When there is no heat or steam, remove the water tank cover to avoid burns.
4. Water heating in winter
In cold winter, it is difficult to start the generator if cold water is added before starting, it will start easily. cause damage during the water filling process or when water is added but does not start in time, the water chamber and water inlet pipe of the water tank are likely to freeze, preventing the water to circulate and even causing water to flow into the reservoirir swells and cracks. Adding hot water can, on the one hand, increase the engine temperature to make starting easier, on the other hand, it can try to avoid the freezing phenomenon mentioned above.
5. Antifreeze must be of high quality
The quality of antifreezes on the market currently varies and many are of poor quality. 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. At the same time, a large amount of scale will be produced, resulting in poor quality. heat dissipation of the motor and cause motor overheating. Therefore, be sure to choose products from regular manufacturers.
6. Fill the fresh water in time
After filling the water tank with antifreeze, if you find that the liquid level in the water tank has droppeddry, make sure there are no leaks. Just add clean, fresh water (distilled water is best), because the boiling point of commonly used ethylene glycol antifreeze is high and what evaporates is the water contained in antifreeze. antifreeze and just add fresh water. It’s worth mentioning: never add unsoftened hard water.
7. Drain the antifreeze in time to reduce corrosion
Whether it is ordinary antifreeze or long-life antifreeze, when the temperature becomes high, it will do so. should be released in time to avoid corrosion of the enlarged parts. becauseThe preservatives added to antifreeze will gradually decrease or become invalid as the use time increases. Additionally, some simply do not add preservatives, which will have a strong corrosive effect on machine parts. temperature conditions, antifreeze should be released in time and the pCooling ipeline should be thoroughly cleaned after releasing the antifreeze.
8. Change the water regularly and clean the pipes
It is not recommended to change the cooling water frequently, because after a period of use, the minerals present in the cooling water have precipitate. Unless the water is very dirty and likely to clog pipes and radiators, do not replace it easily, because even though the newly replaced cooling water has been softened, it still contains some minerals, and these minerals. will settle in the water. The more frequently the water is replaced, the more minerals precipitate and the thicker the scale becomes. Therefore, the cooling water should be replaced regularly according to the actual situation. The cooling pipe must be cleaned when replacing. The cleaning solution can be prepared with caustic soda, kerosenee and water. At the same time, maintain each drain switch, especially before winter. Replace damaged switches in time. Do not replace them with bolts, wooden sticks, rags, etc.
9. Open the water tank cover when draining the water.
If you do not open the water tank cover when draining the water, although the Cooling water may flow out partially, it will not flow out like the water inside the radiator. Reducing the water volume will cause a certain degree of vacuum due to the tightness of the water tank, which will slow or stop the water flow in winter. parts will freeze due to incomplete drainage of water.
10. It is not advisable to drain the water immediately when the temperature is high.
Before the engine stalls, if the engine temperature is very high, do not stop the engine immediately to drain the water.The load must first be removed to allow. It idles and waits for the water temperature to drop to 40-50°C before draining the water to avoid the temperature of the outer surface of the cylinder. , the cylinder head and the water jacket in contact with the water drop and shrink suddenly due to the sudden release of water, while the temperature inside the cylinder is still very low. High and low shrinkage, it is easy to cause cracks in the cylinder block. and the cylinder head due to excessive temperature difference between the inside and the outside.
11. Idle the engine after draining the water in cold winter.
In cold winter, after draining the cooling water from the engine, you should start the engine. engine and let it idle for a few minutes. This is mainly because some water may remain in the water pump and other parts afterdraining the water. After restarting, the body temperature can dry the residual water in the water pump and other parts. make sure there is no water in the engine. Add antifreeze in time and drain the coolant to prevent water leakage from occurring when the water pump freezes and the water seal tears.