[Maintenance of excavator air conditioner] How to maintain excavator air conditioner

Air conditioning is very common in our daily life, and it does great harm to our daily life, especially in summer and winter. Nowadays, there are many industries where air conditioners are applied, and the more common one is excavator air conditioners. The excavator air conditioner will also have problems in application. So few friends know about the maintenance of the excavator air conditioner. The following editor will share the maintenance knowledge of the excavator air conditioner with you in detail.

Maintenance method of excavator air conditioner:

1. Only the blower of the air conditioner does not cool

Many people are full of questions about why the air conditioner does not cool when the machine first experiences summer? Such people are usually ordered to "come back and read through the instructions after asking such difficult questions when there is no inspection countermeasure. The" A/C "on the operation panel indicates that the air conditioner is turned on. However, they have no choice but to press the key, right? Don't believe it. They never read the instructions. They open their mouth and ask themselves. They expect that there is no such person in this article.

2. The actual effect of air conditioning cooling is not very good

It is confirmed that the process of turning on the air conditioner is correct, but the air conditioner still feels that the air conditioner cannot supply air conditioner, so first check whether the air conditioner drive belt is loose. If it is OK, check whether the refrigerant (i.e. snow seed, Freon) is insufficient. If it is OK, check the power circuit. If the power circuit is OK, clean the internal and external circulation of the air conditioner evaporator and the air conditioner filter.

3. The air volume of the air conditioner is small

First, check the filter element of the air conditioner to see if it is blocked. In addition, the air inlet will suck in dirt and be blocked. The filter element is located at the inlet of the air conditioner bellows. Most of the filter elements are blocked before the air flows out. If there is no area to buy, blow down the hot air gun and use it first. Remove the motor regardless of use. Connect the power plug, the machine, and the gear test one by one. If the speed ratio does not change, most of the variable resistors are broken. The air conditioning filter device is installed at the inlet of the vehicle internal circulation air duct of the air conditioning cooling module in the cab. If the filter device is blocked, the exhaust air volume will be endangered or there will be no wind blowing out immediately.

4. If the air conditioner only listens to the centrifugal fan, it will not blow

It is the careless driver that causes the equipment defects. The cabin is very dirty and the air grid is worn out, so that dust and paper are sucked into the volatilization box by the centrifugal fan. The volatilization box has deposited a thick layer of lime fly ash residue, which makes it impossible to absorb the air inlet, and then to blow out the air. Start the inspection first. If the refrigeration compressor can operate, it means that the working pressure foundation of the system software is normal, although it can only drain the cold air. Note that the cold air can be recycled and reused. It is unnecessary to be impatient when discharging the cold air. Gradually discharge the cold air from the bottom pressure side of the meter. Then remove the air conditioning system software to dissolve the cleaning. After reinstallation, take time to add cold air to solve the problem. The air conditioner should always check whether there is soil, smoke, fallen leaves and other dirt in the cooler plate fin type. If there is, it should be cleaned with high pressure gas, steam or water.

5. Freon has just been added, and it is still cold at the beginning. After a few hours, the wind blows warm

First check the level of household appliances. If it is good, use a barometer to measure the excitation. The pressure is generally 16,7KG, and the bottom pressure is generally 2,3KG. If there is no Freon refrigeration compressor, the clutch is not engaged. If there is fluoride, check whether there is ice blockage or dirty blockage. Check the broken pipe with soap solution.

6. Air conditioner holding

Most of them are due to the shortage of diesel engines, the reduction of diesel engine power, and the inability to drive the air conditioner, or the inconformity between the output power of the hydraulic oil pump and the output power of the diesel engine. The output power of ordinary air conditioners accounts for one tenth of that of diesel engines. The solution is to increase the engine displacement or reduce the output power of the pump, and increase the accelerator pedal when opening the air conditioner. Also, check the air filter element and the diesel filter.