Fault of Poor Contact in The Starting Circuit of Diesel Generators

The starting circuit of the diesel generator has poor contact. Although various instruments are normal, the diesel generator cannot start. Here are some examples:

Fault phenomenon: A Deutz F2L513 air-cooled diesel generator was originally starting normally, but after a system maintenance work, the diesel engine could not start. Pressing the start switch, the starter basically did not start.

Fault diagnosis: It was initially suspected that the battery was out of charge. Due to on-site operations, there was no professional charger available, so power was taken from another device using a grounding method. The power of this device is also a Fl2 port 13 air-cooled diesel engine, which is starting and charging. However, after connecting the wires, the diesel generator still cannot start, and after turning on the start switch, the starter still does not turn. At this point, the operator of the equipment believes that there is a problem with the maintenance personnel's maintenance, which may be due to improper adjustment of a certain position, causing the diesel engine to malfunction and fail to start.

Troubleshooting: In order to find the cause, the maintenance personnel conducted a comprehensive and careful inspection of the diesel generator and did not find any abnormalities. When using a pry bar to move the crankshaft of the diesel engine, it feels flexible and there is no jamming phenomenon. After careful investigation, it was found that the voltage of the voltmeter on the dashboard, whether connected or not, is only 22V, which cannot meet the starting voltage requirements; And the voltage when connected and not connected is the same, indicating that the electrical energy from the other vehicle has not been transmitted after being connected. Therefore, it was decided to connect the grounding wire directly to the connector behind the switch, and when the diesel engine was restarted for power generation, it immediately started successfully.

Fault description: Although the diesel engine and starting system appear to be working properly, starting the diesel engine may also be difficult if there are virtual connections or poor connections in the circuit.

Since 1982, Dingbo Generator has been a generator set manufacturer qualified by the "National Internal Combustion Engine Quality Supervision and Inspection Center". The product quality has passed the IS09001 quality system standard certification. And obtained the qualification certificate for self-operated import and export. Over the years, Dingbo units have been widely used in all walks of life, and have won the network access qualification of the Ministry of Information Industry, the network access qualification of the Ministry of Radio and Television, the network access qualification of CNPC, the network access qualification of China Mobile, and the manufacturing qualification of marine units. In 2016, Dingbo was awarded the Certificate of Qualified Supplier of China Nuclear Power Group. Dingbo Generator has been cooperating with Shangchai Power for many years. In 2009, it became the OEM partner of Shangchai Power in China. Dingbo generator VOLVO unit ranks the top three in the Asia-Pacific sales volume, and is the core OEM partner of Sweden Volvo in the Asia-Pacific region. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to sales@dieselgeneratortech.com.