Reasons for Slow Rotation of Diesel Generator Set

If the diesel generator set rotates slowly, which indicates that it is unable to rotate or cannot rotate, the battery of the diesel generator set should be checked immediately. Use a multimeter to check whether the battery voltage of the diesel generator set reaches the rated voltage. If not, the battery must be charged. For the wet battery, it is also necessary to check whether the water in the battery of the diesel generator set is between the minimum and maximum scale lines irregularly, otherwise it is necessary to adjust it to avoid insufficient charging of the diesel generator set battery or liquid overflow during charging.

If the battery electrolyte is supplemented too much during normal maintenance, it is easy to overflow. The battery surface corrosion terminal increases the contact resistance. The cable is poorly connected, which may also make the diesel generator set unable to start. In this case, sand paper can be used to polish the corrosion layer of the terminal and cable connector, and then retighten the screws to make the diesel generator set terminal fully and closely contact with the electrode wiring. In order to prevent the terminal of diesel generator set from corrosion again, the terminal can be coated with grease for anti-corrosion treatment.

When the diesel generator set is running, the vibration will make the wiring loose and cause poor contact, which will also make the diesel generator set unable to start normally. Judging the action of the starting motor, the shell of the starting motor can be tested with the back of your hand at the moment of starting the diesel generator set. If the starting motor does not move and the shell is cold, the motor does not act. Or if the starting motor is severely hot and has a pungent burning smell, the motor coil has been burned out.

In addition to the above circuit faults, it is also possible that the diesel generator set cannot be started due to the fault of the oil supply system. For example, there is air in the fuel system, which is a common fault. At this time, it is necessary to exhaust the hand pump until the inlet pressure of the fuel delivery pump of the diesel generator set reaches 345kpa or more. In addition, fuel pipe blockage, such as fuel injection nozzle blockage, will also make the diesel generator set unable to start. At this time, the oil path must be cleaned to make the oil path unblocked, so that the diesel generator set can start.

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