Generator Recovery
1. Post-recovery of diesel generators, inspect and maintain the battery pack
Due to the infrequent use of backup power sources, the ability of the generator to start up normally hinges on the maintenance of the batteries. If there's an issue with the battery bank, a common situation is having voltage but no current. In this case, you can hear the electromagnetic valve in the start motor clicking but it fails to drive the shaft. The reason the battery bank issue prevents shutdown is:
During the trial operation, stopping the battery charging can lead to insufficient battery power.
(2) Utilizing a mechanical oil pump driven by a belt, the pump delivers a large volume of oil at the rated speed. However, due to insufficient power supply from the battery pack, the spring plate in the shut-off valve fails to close completely over the four oil outlet holes during shutdown, as the electromagnetic valve's suction is inadequate, resulting in an inability to stop the machine.
(3) Domestic batteries typically have a lifespan of two years and do not require regular replacement.
2. After the diesel generator is recycled, start the solenoid valve for inspection. While the generator is running, check the solenoid valve using the "see, listen, feel, and smell" method. To start it, simply press the start button, and it will be operational in three seconds. During these three seconds, you should hear two clicks. If you don't hear two sounds, check if the start solenoid valve is functioning properly. If the electromagnet coil is burned out, the generator, of course, will not start.
3. Post-recycling of diesel generators, inspection of diesel and lubricating oil is crucial. Since diesel generator sets remain stationary for extended periods, the materials within the set undergo complex chemical and physical changes with engine oil, coolant, diesel, and air, potentially damaging the set. Oil issues are significant. For fire safety, diesel fuel tanks are typically kept in enclosed rooms. Due to condensation caused by temperature changes in the atmosphere, water droplets adhere to the inner walls of the tank and mix with the diesel, exceeding the allowable water content. This diesel, when introduced into the high-pressure fuel pump of a diesel engine, can corrode the plungers, leading to severe damage to the set.