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Pay Attention to The Oil Level of Cummins Diesel Generator Set

Aug. 12, 2021

During the operation of Cummins diesel generator sets, Starlight reminds everyone to pay more attention to the oil level. Both high and low oil levels are detrimental to the operation of the equipment. But in the face of this problem, you don't need to be in a hurry. Let's learn how to deal with the high or low oil level.


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The oil level is too high. The oil level of Cummins genset is higher than the maximum oil level line due to the increase in oil temperature, and sometimes the oil level reaches the top and the oil level cannot be seen. Starlight believes that the reason for the high oil level may be: the abnormal operation of the transformer cooler causes the transformer oil temperature to rise, and the oil expands due to heat, which causes the oil level to rise; The oil level is too high. If the oil level is too high due to abnormal operation of the cooler, Starlight recommends that users check whether the surface of the cooler is clogged with dust, whether the upper and lower valves of the oil pipe are open, whether the pipe is blocked, whether the fan and submersible pump are operating normally and reasonably. Whether the temperature of the cooling medium is appropriate and whether the flow rate is sufficient. If the oil level is too high, the oil should be drained to an appropriate height. If the oil level is not visible, determine where the exact highest oil level line is, and then drain the oil to an appropriate height.


The oil level is too low. When the oil level of the transformer is significantly lower than the oil level corresponding to the current oil temperature, and the oil level is below the lowest oil level line or is not visible, it should be judged that the oil level is too low. The reasons for the low oil level of generator set may be: oil leakage in the transformer; the original oil level of the transformer is not high, and the oil level is too low when the load of the transformer drops suddenly or the temperature of the outside environment drops significantly; the oil of the strong oil-water-cooled transformer flows into the oil cooler a longer time will also make the oil level too low. If the oil level is too low, it will cause the light gas protection to operate, and if it is a float relay, it will also cause the heavy gas protection to trip. When there is a serious shortage of oil, the transformer core and windings will be exposed to the air, which will not only be susceptible to moisture and reduce the insulation capacity, but also may cause insulation breakdown. Therefore, if the transformer oil level is too low or the oil level is significantly reduced, oil should be replenished to the normal oil level as soon as possible. If the oil level is significantly reduced due to severe oil leakage, it is forbidden to change the gas protection from trip to signal to eliminate the oil leakage and restore the oil level to normal. If a large amount of oil leaks, the oil level drops below the gas relay or continues to drop, the transformer should be stopped immediately.


In addition to the problem of too high or too low oil level, there may also be a false oil level. The reasons for the false oil level may include: when the non-capsule-sealed oil pillow oil standard tube is blocked, the respirator is blocked or the vent of the explosion-proof tube is blocked. When it is blocked, there will be a false oil level. When the capsule-sealed oil pillow has a certain amount of air, the capsule is blocked from breathing, the capsule is installed in an unreasonable position, and the capsule bag ruptures, it will also cause a false oil level. When handling, the heavy gas protection should be lifted first.


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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