In the hot weather and natural environment, when your excavator has no air conditioner, the temperature in the cab is no different from that outside, which will be painful! To tell the truth, air conditioners are indispensable in summer. But if the air conditioner "falls off the chain" when the bar is hot, I think it's a joke. It's a living sense of rhythm. Therefore, you must pay attention to the normal application and maintenance of the excavator air conditioner to reduce the common failures of the air conditioner. Air conditioner of small excavator.

1. Pay attention to the internal and external temperature difference. The temperature is too low and the fuel consumption is too high

First of all, let's talk about the usual application of the excavator air conditioner. It is still unnecessary to adjust the temperature too low. Pay attention to the temperature difference inside and outside the driver's cab. A large temperature difference is very easy to cause operators to have fever, cold, dry cough, high fever, listlessness and other diseases. If the air conditioning temperature is too low, the load borne by the diesel engine will increase, which may increase the fuel consumption.

2. Clean and replace the filter unit on time to avoid blocking

The air conditioner of the excavator also needs maintenance. The air conditioner filter device is generally cleaned every 500 hours. If it is used in a dusty natural environment for a long time, it needs to be cleaned frequently. When there is too much dust or other impurities on the filter device, the filter screen yarn will be blocked, reducing the actual cooling effect of the air conditioner. The natural filtering device must also be replaced on time.

3. Cleaning and inspection of impurities in cooler sheets

Except that the air conditioning filter must be cleaned on time, it is also necessary to clean and inspect the air conditioning cooler blades. The soil, smoke and other impurities on the upper side should be cleaned immediately to avoid blocking the air conditioning cooler and endangering the actual cooling effect of the air conditioning. Air conditioner of small excavator.

4. Cleaning of other impurities and dust in the air conditioner

Cleaning of other impurities and dust, such as removing the dust on the radiator, will increase the fuel consumption of the diesel engine due to excessive dust on the radiator; The dirt at the air inlet of the air conditioner should be properly handled. More dirt will block the air inlet, thus reducing the air output and exhaust volume of the air conditioner.

5. Check the supporting force of the drive belt of the air conditioning refrigeration compressor

Regularly maintain the supporting force of the drive belt of the air conditioning refrigeration compressor, usually once every 250 hours. Press the drive belt gently with a finger (about 6.2kgf force) at the middle part between the drive belt pulley and the refrigeration compressor belt pulley. The stiffness of the drive belt should be 6.3-8.7mm. In addition, regular maintenance of refrigerant is also required. Low refrigerant level gauge will endanger the actual effect of refrigeration.

6. Check when the excavator is not used for air conditioning

The air conditioner of the excavator is naturally used for temperature reduction and cooling in summer. In other seasons, it is not used most of the time. When the air conditioner is idle, inspection should be carried out. It should be ensured that the actual operation of the air conditioner lasts for 3 to 5 minutes every month to avoid common failures that occur when the air conditioner is not used for a long time. Air conditioner of small excavator.