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How to Repair The Leakage Fault of Diesel Generator Radiator?

May. 06, 2022

It should be known that the diesel generator will generate a lot of heat after running for a long time. If the radiator of the diesel generator cooling system cannot reduce the heat generated during the operation of the unit well, it will cause losses to various components, which will affect the output power of diesel generator.


generator maintenance


The main failure mode of the diesel generator radiator is water leakage. The main reasons are: During work, the fan blades are broken or tilted to damage the radiator hot water pipe; The radiator is not fixed firmly on the bracket, and the radiator is damaged by a large vibration during work; In winter, the radiator water pipes are frozen and cracked due to the presence of water; The magazine in the cooling water forms scale in the radiator water pipe, causing the pipe wall to be corroded and ruptured.


Water leakage inspection: Generally speaking, after the radiator is cleaned, the water leakage inspection is carried out. The following methods can be used for inspection. Block the inlet and outlet of the radiator, install a joint from the overflow pipe or the drain plug, inject 0.15-0.30kgf/cm2 of compressed air, and put the radiator into the pool. If there are bubbles, it is a leak. Check with water. When checking, block the inlet and outlet of the radiator, and after filling the water inlet with water, observe whether there is water leakage. In order to facilitate the discovery of small cracks, you can apply a certain pressure to the radiator or make the radiator slightly vibrate, and then carefully observe , there will be water seepage at the leak.


Soldering and repairing radiators: Soldering of radiators is usually performed by soldering. Before welding, wipe off the oil on the weld, then use a scraper to scrape out a new metal layer, and then heat it properly. After the soldering iron is heated, dip it in the zinc oxide solution, and then stick it with solder. After sticking, smooth the weld and wash the zinc oxide around the weld with hot water to prevent corrosion.


Welding repair of upper and lower water chambers. When the upper and lower water chambers are not broken, they can be repaired with solder directly. When soldering repair, first apply a layer of solder on one side of the copper skin and the leaking place, put the copper skin on the leaking place, and then heat it externally with a soldering iron to melt the solder and weld the surrounding area firmly. For the welding and repair of the radiator water pipe, if the outer water pipe of the radiator is broken and the break is not large, the heat sink near the water pipe can be torn off a little with needle-nose pliers and repaired with solder directly. If the breach is large or the water pipe in the middle layer leaks, it should be handled flexibly by the methods of stuck pipe, blocked pipe, takeover and pipe replacement according to the specific situation. However, the number of stuck pipes and blocked pipes should not exceed 10% of the total number of pipes, so as not to affect the heat dissipation effect of the radiator.


Starlight Power was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com we will pay highly attention on your question.

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