When a generator set that has been idle for a long time is put back into use, a series of necessary testing and maintenance steps need to be carried out to ensure its safe, stable, and efficient operation.

Firstly, conduct an appearance inspection to carefully examine whether the casing of the generator set is damaged, deformed, or corroded, ensuring that the overall structure of the unit is intact. At the same time, check whether the bolts at each connecting part are loose. If they are loose, they should be tightened in a timely manner to prevent component displacement or detachment during operation.

Next is the maintenance of the fuel system. Check if the fuel in the fuel tank has deteriorated. If the fuel is stored for too long, there may be issues such as impurities settling and water mixing, which can affect the normal combustion of the engine. Therefore, it is recommended to empty the deteriorated fuel, clean the fuel tank, and add new fuel. At the same time, check if the fuel filter is clogged and replace it if necessary to ensure smooth fuel supply.

For the lubrication system, it is necessary to check the oil level and quality of the engine oil. Long term idleness may lead to oxidation, thinning, or impurities in the engine oil, which cannot provide good lubrication. According to the actual condition of the engine oil, choose to supplement or replace the engine oil. In addition, it is necessary to check the oil filter to ensure its filtering effect.

The cooling system cannot be ignored either. Check if the coolant in the water tank is sufficient and observe if there is any deterioration or turbidity in the coolant. If the coolant is insufficient or deteriorated, it is necessary to add or replace the coolant to ensure good cooling of the engine during operation and prevent overheating. At the same time, check whether the cooling water pipeline is cracked, leaking, etc. If there are any problems, repair or replace them in a timely manner.

The detection of electrical systems is equally crucial. Check if the battery is fully charged. If the battery is idle for a long time, it may experience power loss, which can affect the starting performance. The battery can be charged or replaced with a new one. In addition, it is necessary to check whether the wiring of the generator is secure, whether there is looseness, oxidation, etc., to ensure that the electrical connection is normal. At the same time, check the insulation performance of the generator to prevent safety hazards such as leakage.

After completing the above inspection and maintenance, a no-load trial run is also required. During the trial operation, closely observe the operating status of the generator set and check for any abnormal noise, vibration, or odor. If there is any abnormality, the machine should be stopped immediately for inspection, and after troubleshooting, trial operation should be carried out until the generator set runs normally.

Through the comprehensive testing and maintenance steps mentioned above, the reliability and stability of long-term idle generator sets can be effectively improved after they are put back into use, providing strong support for their subsequent normal operation.