Maintenance method of portable diesel generator set

Maintenance of portable diesel generator sets

Inspection of the battery pack. Carefully check the relevant components. Since the backup power supply is not often put into use, whether the portable diesel generator can start normally depends on the maintenance of the battery. If there is a problem with the battery pack, the more common situation is: there is voltage and no current. At this time, the sound of the solenoid valve in the starter motor being pulled in can be heard, but the connecting shaft cannot be driven. There are three reasons for the failure of the battery pack to stop the shutdown:
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  1. Stop charging the battery during the test machine, which will lead to insufficient battery power.
  2. The mechanical oil pump is driven by a belt, and the pump oil volume at the rated speed is very large. However, the power supply of the battery pack is insufficient, so that the spring in the shut-off valve cannot be blocked due to the insufficient suction force of the solenoid valve during shutdown. out of fuel, resulting in no shutdown.
  3. Domestic batteries usually have a lifespan of two years and are not replaced regularly.

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Maintenance of portable diesel generator set two

Start solenoid valve inspection. Carefully check the relevant components. When the portable diesel generator is running, people have concluded a set of inspection methods of “seeing, listening, touching, and sniffing”. Listening at startup is a very important step. Take the original Cummins portable diesel generator from the United States as an example, just press the start button, and it will start after three seconds. Two “clicks” are audible during these three seconds. Once the second sound is not heard, it is necessary to check whether the start solenoid valve is working properly. If the solenoid coil is blown, the portable diesel generator will of course not start.
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Maintenance of portable diesel generator set three

Inspection of diesel oil and lubricating oil. Carefully check the relevant parts, because the unit is in a static state for a long time, the various materials of the unit itself will undergo complex chemical and physical changes with oil, cooling water, diesel oil, air, etc., so that the unit will be “discharged”. This should pay attention to the problem of oil. For fire safety, the diesel fuel tank is usually placed in a closed room. Due to the condensation of water vapor in the atmosphere due to temperature changes, it forms water droplets that hang on the inner wall of the fuel tank and flow into the diesel oil, causing the diesel water content to exceed the standard. , Such diesel oil enters the high-pressure oil pump of the diesel engine, and it will corrode the precision coupling part—the plunger, and seriously damage the unit. The portable diesel generator lubricating oil has a shelf life. When stored for a long time, the physical and chemical properties of the lubricating oil will change, resulting in the deterioration of the lubricating state when the unit is working, which may easily cause damage to the portable diesel generator parts.

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