What precautions should be taken when using diesel generators in winter?

Introduction What precautions should be taken when using diesel generators in winter? 1. Avoid waterproofing too early or not draining the cooling water. The diesel generator idles before stalling, and waits for the cooling water temperature to drop below 60°C.

What precautions should be taken when using diesel generators in winter?

1. Avoid waterproofing too early or not adding cooling water. The diesel generator must run at idle speed before stopping. Wait until the temperature of the cooling water drops below 60°C and the water is not hot to the touch, then turn it off and waterproof it. If the cooling water is released prematurely, the diesel generator body will shrink and crack suddenly when suddenly attacked by cold air when the temperature is high. When waterproofing, the remaining water in the diesel generator body must be completely drained, otherwise it will freeze and expand, causing the body to swell and crack.

2. Avoid using fuel haphazardly. The low temperature in winter deteriorates the fluidity of diesel fuel, the viscosity increases, and it is difficult to spray, leading to poor atomization and worsening of combustion, resulting int a reduction in the power and economic performance of the diesel generator set. Therefore, light diesel fuel with low freezing point and good ignition performance should be used in winter. It is generally required that the freezing point of the diesel generator set be 7-10°C lower than the lowest local temperature of the season.

3. Avoid using open flames to aid combustion. The air filter cannot be removed. Dip cotton gauze in diesel fuel and light it to make a fire starter and place it in the intake pipe to start combustion. In this way, during the starting process, dusty air from the outside will be directly inhaled into the cylinder without filtering, causing abnormal wear of the piston, cylinder and other parts. It will also cause the diesel generator to run rough and cause engine damage. machine.

4. Avoid using an open flame to cook the oil pan. In order to avoid deterioration or even combustion of the engine oil in the oil pan, the lubrication performance will be reduced or completely lost, thus worsening the wear of the machine. In winter, low freezing point engine oil should be used. When starting, an external water bath can be used to heat the engine oil to increase the oil temperature.

5. Avoid improper startup methods. In winter, some drivers use abnormal starting methods without water to quickly start the diesel engine. This practice can cause serious damage to the machine and should be prohibited. The correct way to preheat is to first cover the water tank with an insulating quilt, open the drain valve, and continuously inject clean soft water at 60-70°C into the water tank. water when the water flowingof the drain valve is hot. you touch it with your hand, close the drain valve and pour water into the water tank. Fill the water tank with clean, fresh water at 90-100℃ and rotate the crankshaft to ensure all moving parts are properly pre-lubricated before starting. .

6. Diesel generator sets should not operate under low temperature load. After the diesel generator started catching fire, some drivers were eager to get it started immediately. Due to the low body temperature and high viscosity of the oil of a diesel generator set that has recently caught fire, it is difficult for the oil to penetrate into the friction surface of the moving pair, which will result in significant wear of the machine. Additionally, piston springs, valve springs and injector springs are also subject to rupture due to “cold brittleness”. Therefore, once the diesel generator set starts and catches fire in winter, it should idle at low and medium speed for a few minutes, and then put into on-load operation when the cooling water temperature reaches 60° vs.

7. Avoid not paying attention to body insulation. The low temperature in winter can easily cause the diesel generator set to overcool during operation. Insulation is therefore the key to properly using diesel generators in winter. In the northern region, diesel generator sets used in winter must be equipped with cold protection equipment such as insulating sleeves and insulating curtains. In addition, the thermostat plays an important role in increasing the temperature of the diesel generator during operation.

How to manage water in the electrical groupmobile trogen

The weather is cold and the temperature below zero should beWater should be drained. Otherwise, the device may freeze.

Some issues should be considered when waterproofing the diesel generator set:

1 When the external ambient temperature is too low, the cooling water should be drained after 15 minute stop. when the water temperature dropped. This cannot be done 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 deformation of cylinder head, etc.)

2. When the cooling water stops flowing, it is better to shake the diesel generator several more times. At this time, the remaining cooling water does not flow out. easy to flower will flow due to vibration of the diesel engine, preventing water from blocking on the cylinder head. Being frozen, the cooling water will flow into the oil shell 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.

1. If water is found to have entered the generator, turn it off immediately if it is running. It is not allowed to start when stopped.

2. Support one side of the mobile generator set with a hard object and lift it so that the oil drain part of the engine oil pan is in the lowest position, unscrew the oil drain plug, remove it. oil dipstick, and water insideerior flows out by itself. When the oil is about to drain, let the oil and water drain for a while, then tighten the oil drain plug.

3. Remove the air filter, replace the new filter element and soak it in oil.

4. Remove the intake and exhaust pipes and muffler, and remove any water from the pipes. Turn on the pressure relief, crank the diesel engine to generate electricity, and observe if water flows from the inlet and exhaust ports. If there is water drained, continue to rotate the crankshaft until all the water in the cylinder is drained. Install the intake and exhaust pipes and mufflers, add a little engine oil to the air inlet, crank the crankshaft a few times, then install the air filter.

5. Remove the fuel tank, drain all the oil and water in it, check if there is water in the car systemand drain it.

6. Release the waste water into the water tank and water channels, clean the water channels and add clean river water or boiled well water until the water float mounted. Turn on the throttle switch and start the diesel engine. After starting the diesel engine, pay attention to the engine oil indicator rising and listen for any abnormal noise coming from the diesel engine. After checking whether all parts are normal, run the diesel engine. The operating sequence is first at idle, then medium speed, then high speed. The running time is 5 minutes each. After break-in, stop the engine and drain the engine oil. Add new engine oil again, start the diesel engine and run it at medium speed for 5 minutes, then it can be used normally.

7. Disassemble the generator, check the stator and rotorinside the generator, then dry them before assembly.

Users of mobile generator sets should pay attention to protecting the unit after the unit is wet and in humid environments, to ensure the normal operation of the generator set.

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