Silent generators are designed to reduce noise during operation, making regular maintenance and care crucial. A silent diesel generator is an independent power source primarily used for emergency power during power outages. In fact, most generators are in standby mode most of the time, with limited actual usage opportunities. They are usually tested regularly rather than fully operational, lacking comprehensive inspection and repair methods. However, this emergency backup power is indispensable.

How can we ensure that generators provide timely power supply during emergencies, operate safely and reliably when in use, and immediately shut down after the power is restored? Below, a diesel generator set manufacturer introduces the general maintenance and care methods for a silent diesel generator set:

Battery Pack Inspection. Since the backup silent diesel generator set is not frequently used, the ability of the generator to start normally hinges on the maintenance of the batteries. If issues arise with the battery pack, a common scenario is: there is voltage but no current. In this case, you can hear the sound of the electromagnetic valve in the starting motor engaging, but it fails to drive the shaft.

Battery pack issues have led to the inability to shut down for three reasons:

During the trial run, stopping the battery from charging can lead to insufficient battery power.

2. The mechanical oil pump, powered by a belt drive, delivers a large volume of oil at the rated speed; however, the insufficient power supply from the battery pack leads to the inability to shut down due to the spring blade in the shut-off valve failing to close the fuel emitted from the four oil outlets, as the electromagnetic valve's suction force is not sufficient.

3. Domestic batteries typically have a lifespan of two years and do not require regular replacement.

Initiate the inspection of the solenoid valve. During the operation of the diesel generator set, people have summed up a set of inspection methods: "first look, second listen, third feel, fourth smell." Listening at the start-up is a crucial step. Taking the American original Cummins generator as an example, simply press the start button, and it will start after three seconds. Within these three seconds, you can hear two "click" sounds. If you don't hear any noise, check whether the solenoid valve is functioning properly. If the solenoid coil is burnt out, the generator, of course, cannot start.

Diesel and lubricant inspections are crucial. Since diesel generators remain stationary for extended periods, various materials within the unit undergo complex chemical and physical changes with oil, coolant, diesel, and air, potentially damaging the unit. Therefore, attention must be paid to the oil quality. For fire safety reasons, diesel fuel tanks are often kept in enclosed rooms. Due to temperature changes, moisture in the atmosphere condenses into water droplets, adhering to the inner walls of the tank and mixing with the diesel, exceeding the allowable water content. Such diesel, when entering the high-pressure pump of a diesel engine, can corrode precision components like plungers, leading to severe damage. Generator lubricants have a shelf life; prolonged storage can alter their physical and chemical properties, deteriorating the unit's lubrication condition during operation and increasing the risk of component damage.