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What should be done if the excavator gives a high-temperature alarm during summer construction?

2025-08-17 Maintenance Add to favorites
Excavators, like people, are hit by summer heat waves every year. During operati

Excavators, like people, are hit by summer heat waves every year. During operation, the temperature of the excavator increases along with the rise of the outdoor ambient temperature, which is a normal phenomenon. When the temperature is high, as long as it is handled properly, it will not cause damage to the excavator. If your excavator suddenly gives a high-temperature alarm during operation, don't panic. Follow the methods below to effectively lower the water temperature and oil temperature.

1. "Reduce load, lower speed" to minimize heat absorption

Turn off the pilot lock, shift the throttle to first gear and idle to reduce the load and speed. The heat generated by the friction of each moving part will correspondingly decrease the heat produced by the engine, indirectly reducing the heat absorbed by the coolant, thereby slowing down the rate at which the water temperature rises.

2. Increase the air intake volume of the water tank to accelerate heat dissipation

Open the side doors on both sides of the excavator to increase the air volume entering the radiator, allowing the cabin temperature to dissipate quickly and thereby reducing the rate at which the water temperature rises.

After the temperature drops, check if the antifreeze in the water tank is lacking and add antifreeze

If there is no spare antifreeze at hand, you can add "purified water or distilled water for human use". Do not add river water or groundwater. Here, it is recommended to use the professional antifreeze designated by Sany excavators. Antifreeze from different manufacturers or brands must not be mixed.

After the temperature drops, clean the radiator

After the temperature drops, check if there is too much dust between the radiator, condenser and water tank. Thoroughly clean them with high-pressure air to ensure that the water tank and condenser have good heat dissipation performance. It is also necessary to pay attention to wiping the dust between the condenser and the water tank on a regular basis. In fact, 80% of the high temperatures in excavators are caused by poor heat dissipation. Therefore, thoroughly cleaning the debris on the surface of the radiator and the scale and oil stains inside is the ultimate solution to the high temperature problem of excavators.


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