Precautions for Component System of Cummins Diesel Generators

1. Precautions when starting Cummins diesel engine generator 

(1) Before starting Cummins diesel engine generator, the starting system circuit and the charging condition of the battery must be checked first. When starting, check whether the battery terminal and battery clip are secure.

(2) When starting a diesel engine, if one start cannot achieve the starting purpose, the interval between the second start and the first start should not be less than 2 minutes.

(3) Quality requirements for starters, batteries, and battery cables. Each start time is not allowed to exceed 10 seconds. If diesel generator set is started, the hand should be quickly separated from the start button to prevent the failure of the swing wheel and flywheel after the diesel generator set is started.

(4) When the diesel generator set fails to start for several consecutive times, the fault that caused the inability to start should be eliminated before starting.

2. Precautions for using chargers of Cummins generator 

(1) The charging generator must be used in conjunction with the corresponding charging generator regulator and battery, otherwise it may damage the generator and regulator. Some operators use silicon rectifier generators in conjunction with DC regulators, which can easily cause faults that should not occur.

(2) The wiring must be correct and reliable, and the positive and negative poles must not be connected incorrectly, otherwise it will damage the silicon rectifier generator, DC generator, and charging generator regulator. 

(3) The transmission belt of the charging generator should be regularly inspected to ensure stable power generation during diesel engine operation and to ensure normal charging of the battery.

(4) During the rotation process of the charging generator, it is not allowed to use a screwdriver or other metal objects to short circuit the positive wire to the casing or negative electrode, in order to observe whether there is a spark to determine whether the charging generator is generating electricity. This can easily damage the internal diodes and other components of the generator.

3. Precautions for the use and maintenance of batteries

(1) After the battery is discharged, it should be charged in the shortest possible time. 

(2) The electrolyte inside the battery should be 10-15mm higher than the electrode plate, otherwise it will damage the electrode plate inside the battery.

(3) After charging the battery, if it is not used for a long time, it should be recharged once a month. Therefore, after using the diesel generator set in winter, it is necessary to place the battery in a dedicated charging room for charging and storage to prevent the battery from freezing and cracking. If not placed in the charging room, it should be charged once a month on the diesel generator set and placed in a room with heating.

(4) The battery should be kept clean regularly and the exposed surfaces and ventilation covers on the battery should be regularly washed.

(5) If damage is found to the battery isolation board, battery board, or ventilation cover, it should be sent to a specialized repair shop for repair. If it is winter and the temperature is low, and it is difficult for one battery to start the diesel engine, the method of increasing the power can be used, that is, to connect one or two batteries in parallel on top of the original one.

4. Precautions for Diesel Engine Flying 

Before starting a diesel generator set that has been left unused for a long time, tools should be prepared to prevent the occurrence of a runaway. In the event of a runaway, the following points should be noted:

(1) Quickly adjust the throttle to the stop position.

(2) Pull the exposed shutdown button directly back to the shutdown position by hand.

(3) Remove the air filter and block the air inlet.

(4) Quickly loosen the high-pressure oil pipe or high-pressure oil pump inlet screw of each cylinder.

(5) Resolutely stop and oppose the phenomenon of abandoning the diesel engine and fleeing when it is speeding.

5. Precautions for summer use of Cummins generator

In hot weather, diesel engines are prone to overheating, resulting in a decrease in their power, economy, and operational reliability. Therefore, in hot weather, it is necessary to pay attention to cleaning the cooling system to improve the cooling effect. Scale has a significant impact on the heat dissipation effect of the cooling system, so strengthening the cleaning of the cooling system plays an important role in improving the heat dissipation of diesel engines. In addition, the small holes of the water radiator should be unblocked and flushed to ensure the tightness of the transmission belt; Pay attention to the operation of the thermostat, the sealing of the cooling system, and the ventilation openings on the radiator cap.