Restoring Diesel Generators After Rain Exposure
 
With the changing climate patterns, diesel generators often face consecutive torrential rain when used outdoors, and inadequate protection measures may result in moisture, rust, corrosion, and even damage to circuits, posing safety hazards and shortening their lifespan. To maintain and restore the normal operation of diesel generators, in this article, six meticulously summarized steps will be clearly introduced for users' reference.
 
1. Surface Cleaning
 
Firstly, use water to flush the surface of the diesel engine to thoroughly remove adhering mud and debris. Then, use metal cleaning agents or laundry detergent to remove surface oil stains, ensuring cleanliness.
 
2. Drainage
 
Elevate one end of the diesel engine to position the drain plug of the oil sump at a lower level. Open the drain plug to allow the water inside the oil sump to flow out. During the drainage process, let a portion of the oil and water flow out together to ensure complete drainage.
 
3. Air Filter Cleaning
 
Remove the air filter and thoroughly remove any water inside. Use metal cleaning agents or diesel to clean each part and replace the filter element. If the filter element is made of plastic foam, wash it with laundry detergent or soap, rinse it with clean water, dry it, and then soak it in an appropriate amount of engine oil. If the filter element is paper-based, replace it directly with a new one.
 
4. Moisture Removal from Internal Components
 
Remove the intake and exhaust pipes as well as the muffler to eliminate any water inside. Rotate the diesel engine until all water inside the cylinders is completely drained. If prolonged water exposure causes difficulty in rotating the flywheel, indicating rusting of the cylinder liners and piston rings, remove and clean them thoroughly before reinstallation. Severely rusted components should be promptly replaced.
 
5. Cleaning of Fuel Tank
 
Remove the fuel tank and completely drain the oil and water inside. Check if there is water in the diesel filter and fuel pipe, and drain it if necessary. Clean the fuel tank and diesel filter, reinstall them, and add clean diesel.
 
6. Cleaning of Waterway
 
Drain the water tank and waterway of any dirty water, clean the waterway, and add clean water. Start the diesel engine and check if all parts are operating normally. During the engine run-in process, operate at idle, then medium speed, and finally high speed, with each speed segment lasting about 5 minutes.
 
Through the maintenance and restoration steps outlined above, moisture-related safety hazards of diesel generators can be effectively eliminated, restoring them to optimal condition. However, as a preventative measure, diesel generators are preferably used indoors. If outdoor use is necessary, proper sheltering should be implemented at all times to reduce the risk of moisture exposure and prolong the generator's lifespan.
 
 
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