1. Excavator lengthening arm: when the excavator is idling, the display of the water temperature gauge of the automobile engine is too high, the working time of the electronic fan is fast, the noise of the automobile engine is too high, and the common faults are more significant when blowing the air conditioner. During excavator maintenance: check whether there is too much dust between the condenser and the water storage tank, and clean it with high-pressure air to ensure that the water storage tank and condenser have good thermal conductivity. At ordinary times, pay attention to wipe the dust between the condenser and the water storage tank.

2、挖掘机加长臂：在温度过高吹空调时，怠速抖动转速比浮动过大，急加速无力，汽车发动机有异响。挖掘机维修时，查验储水箱上下水管道的温度差，假如温度差很大，需要查验节温器的开度和水泵是否有转速比发振的常见故障。储水箱上下水管道的温度差不能很大。

2. Excavator lengthening arm: when the temperature is too high and the air conditioner is blown, the idle speed jitters, the speed ratio floats too much, the rapid acceleration is weak, and the automobile engine makes abnormal noise. During excavator maintenance, check the temperature difference of the upper and lower water pipes of the water storage tank. If the temperature difference is very large, it is necessary to check the opening of the thermostat and whether the water pump has common faults of speed ratio vibration. The temperature difference between the upper and lower water pipes of the water storage tank shall not be very large.

3、挖掘机加长臂：热车熄火十几分钟后，在运作时不易着车;热车行驶时有时会全自动熄火。办法：热车后，查验防冻液储水箱上端的回水管智能回水状况，若智能回水不畅或阻塞会导致温度过高。友情提示：在华体会国际 维修中不必盲目跟风拆件和返修。

3. Lengthening arm of excavator: it is not easy to start the excavator during operation after the hot vehicle is shut down for more than ten minutes; When a hot car is running, it sometimes shuts down automatically. Solution: after the vehicle is hot, check the intelligent return water condition of the return pipe at the upper end of the antifreeze storage tank. If the intelligent return water is blocked or blocked, the temperature will be too high. Friendly tips: it is not necessary to blindly follow the trend of disassembly and repair in the maintenance of extended arm excavator.

4、挖掘机加长臂：冷车时空调不制冷溫度冰凉，热车时空调不制冷实际效果不显著;并且空调机组内有较大的共振嗡鸣声。挖掘机维修时由于防冻液的添加和更换不规范，会导致汽车发动机水道和储水箱提前阻塞，出现温度高的现象。防冻液两年更换一次，在更换和添加时要使用原厂配件。

4. Lengthening arm of excavator: the space-time adjustment of cold vehicle does not cool the temperature, and the space-time adjustment of hot vehicle does not cool the actual effect is not significant; And there is a large resonance buzzing sound in the air conditioning unit. During excavator maintenance, due to the non-standard addition and replacement of antifreeze, the water channel and water storage tank of automobile engine will be blocked in advance, resulting in high temperature. The antifreeze shall be replaced once every two years, and the original accessories shall be used during replacement and addition.

5、挖掘机加长臂：热车怠速时，压缩机离合器吸断频繁，甚断开，导致热车空调不制冷。

5. Excavator lengthening arm: when the hot vehicle idles, the compressor clutch is frequently sucked off or even disconnected, resulting in the non refrigeration of the hot vehicle air conditioner.

华体会国际 维修空调系统中髙压端高压力过高;空气制冷剂或空调不制冷润滑脂充注太多;內部自调试压缩机的调节作用失效，导致髙压过高;也有空调冷凝器的阻塞，之上常见故障都是会增加汽车发动机的负荷，消耗制冷系统的导热特性，导制温度过高的常见故障产生。

The high pressure at the high pressure end of the air conditioning system repaired by the lengthening arm excavator is too high; The air refrigerant or the air conditioner is not refrigerated, and the lubricating grease is filled too much; The regulation function of internal self commissioning compressor fails, resulting in high pressure; There is also the blockage of the air conditioning condenser. The above common faults will increase the load of the automobile engine, consume the thermal conductivity of the refrigeration system, and lead to the common faults of too high temperature.

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