Dongguan used generator
recovery and repair case:
1. The load-carrying capacity of a postal district bureau drops
The power of the unit is 360KW. After 8 years of use, due to the attention of the responsible person to the backup power supply, in order to ensure that the service system of the entire post office is not interrupted when the mains power is suddenly cut off (the post office service system has a UPS backup power supply), the unit must be able to start normally. And the output must exceed the existing load of the post office. After loading the test machine, the load capacity of the unit is only 210KW.
Failure analysis of second-hand generators in Dongguan
: After inspection, it was caused by excessive carbon deposits caused by long-term no-load test of the unit, which reduced the output of the unit.
Second, the load capacity of a mobile company decreased
Due to the importance attached by the responsible person to the backup power source, the load of a mobile company has exceeded 300KW and the power of the unit is 460KW. After 7 years of use, in order to allow the second-hand generator
unit in Dongguan
to start normally after a power outage, the test machine was loaded Later, it was found that the load capacity of the two units decreased, which were 270KW and 300KW, respectively, and the control parts of the two units were widened, exceeding the standard.
Failure analysis: After inspection, it is caused by excessive carbon deposits caused by long-term no-load test of the unit, which reduces the output power of the unit.
Note: The diesel generator set will have different degrees of power reduction according to the environment of the machine room, the service life, inadequate daily maintenance, and replacement of equipment and components. This has important safety risks, and the diesel generator set has no load for a long time or Idle operation will cause carbon deposits, which will cause the engine output power to decrease, affect the output of the entire unit, and even cause the illusion of normal operation. Once the load is actually loaded, a major failure of the diesel generator set cannot operate normally. Formation of carbon deposits: Because the temperature of the combustion chamber is too low, it is impossible to completely burn the fuel, which will cause carbon deposits, which will block the nozzle holes and piston rings of the fuel injectors, and there will be "black oil" overflow from the exhaust pipe. The valve may get stuck. Some unburned diesel will wash the lubricating oil on the cylinder wall and dilute the oil in the crankcase, causing all the running parts in the engine to suffer from poor lubrication. http://ftfan.cn/