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Among the daily workers, the generator set is the most common and cannot be started. As a result, special equipment cannot be used normally. Now there are some of the most common reasons why the experts of Shenzhen Power Installation Company explain why the generator set cannot be started:
First, check the positive and negative cable wiring of the starter motor is firm.
Vibration generated when the generator is running looses the wiring and causes poor contact, which also prevents the generator from starting normally. The probability of starting the motor itself is less, but it cannot be ruled out. Judging the starter motor's motion can be triggered by the back of the engine at the instant of starting the engine. If the starter motor is not moving and the housing is cold, the motor is not moving. Scientific papers, diesel generator sets . . Or the starter motor is very hot and there is a burning odor of the motor, and the motor coil has been burned. It takes a long time to repair the motor and it is recommended to replace it directly.
Second, the battery failure
If you press the genset start button and the diesel engine rotates slowly, showing no power or rotation, you should check the battery immediately. Use a multimeter to check whether the battery voltage reaches the rated voltage of DC24V (Jiangsu Xingguang diesel generator battery voltage is 24V). Scientific papers, diesel generator sets. . When the generator is normally in an automatic state, its electronic control module ECM monitors the status of the entire unit and the EMCP control panel is maintained by the battery power supply. When an external battery charger malfunctions, or if the battery self-discharges itself, the battery power will not be replenished and the voltage will drop. At this point, the battery must be charged. The charging time depends on the battery discharge and the charger's rated current. If the situation is urgent or the battery cannot be charged and cannot be stored, the battery must be replaced. In view of the above situation, Shenzhen Power Installation Company recommends that the generator set be equipped with a fully automatic dedicated charger to ensure that the battery maintains a constant voltage at all times. In addition, make a voltage measurement of the battery at least once a week. For wet batteries, it is also necessary to check the battery water from time to time, whether it is between the lowest and highest mark lines, otherwise adjustments must be made to prevent the battery from being undercharged or liquid spilled during charging. If improperly maintained at all times, the loss of the internal water and acid components of the battery is not replenished in time, and it is easy to reduce the battery capacity to reduce the service life. The principle of chemical reaction of lead-acid batteries is as follows:
1. PbO2+2H2SO4+PbÛ2PbSO4+2H2O
2. Side reactions H2O charging 1/2O2+2H++2e
3. It can be seen from the above reaction equation that there is a water decomposition reaction during the charging process, and oxygen and hydrogen gas evolved to escape. This is an important reason why it is necessary to frequently add acid and water for maintenance.
Third, check the battery terminal and the connection cable is in good contact.
When the battery electrolyte is usually supplemented during normal maintenance, it may overflow the surface of the battery and increase the contact resistance to make the cable connection bad. This may also prevent the generator set from starting. In this case, Shenzhen Power Installation Company recommends sanding the corrosion layer of the terminal post and the cable connector, and then re-tightening the screw so that the terminal post and the electrode connection are in close contact with each other. In order to avoid corrosion of the terminal, grease can be applied to the terminal to prevent corrosion.
Fourth, in addition to the above circuit failure, there may be a failure of the fuel supply system caused by the generator set can not start.
For example, there is air in the fuel system. This is a more common fault. It is usually handled improperly when the fuel filter cartridge is replaced (such as after the replacement of the fuel filter cartridge without exhausting) causing air to enter. After the air enters the pipeline with the fuel, the content of fuel in the pipeline is reduced, and the pressure is reduced. Insufficient injection of high-pressure fuel to the spray nozzle to open the nozzle above 10297 Kpa causes the engine to fail to start. Exhaust treatment is required at this time (Jiangsu Xingguang diesel generator needs manual pump to perform exhausting work). When the fuel delivery pump fuel pressure reaches 345Kpa or more. In addition, the blockage of the fuel pipeline, such as the clogging of the fuel injector, will prevent the diesel engine from starting. At this time, the oil circuit must be cleaned to make the oil path open and the generator set can be started.
When the battery electrolyte is usually supplemented during normal maintenance, it may overflow the surface of the battery to increase the contact resistance of the battery terminal and make the cable connection bad. This may also prevent the generator set from starting. In this case, Shenzhen Power Installation Company recommends sanding the corrosion layer of the terminal post and the cable connector, and then re-tightening the screw so that the terminal post and the electrode connection are in close contact with each other. In order to avoid corrosion of the terminal, grease can be applied to the terminal to prevent corrosion.