The weather is getting colder and winter will come soon. The mixer driver works hard and the weather is cold. How can we find less air conditioning companies? Here are the components of the air conditioning system of the concrete mixer and the places to be maintained.
Refrigerant: observe whether there is a bubble phenomenon through the liquid lens of the pipeline. Small bubbles or transparent air bubbles indicate sufficient refrigerants, while foam means insufficient refrigerants.
Pipeline: check the connector for leakage at any time. It is normal that there is no oil around the joints. If there is oil, it means there is a leak. When the pipeline surface is damaged, the protective layer shall be added. The maintenance pipeline shall be moisture-proof and dust-proof. When disassembling components and pipes, the pipe head or pipes shall be sealed in time to prevent dust and moisture from entering.
When the cooling effect of air conditioner is poor, check whether the heating water valve is closed. If checking the hot hands of the two black hoses of the warm air, close the warm air water valve after using the air conditioner.
Regularly check whether the drive belt is too loose and whether the bearing in the tensioning wheel operates normally.
检查皮带应在发动机停止后进行。用两根手指压下7 ~ 10MM，放在两个轮子中间。更好有一点弹性。如果皮带磨损严重，就应该更换。
Check the belt after the engine stops. Press down 7 ~ 10 mm with two fingers and put it in the middle of two wheels. It's better to have a little flexibility. If the belt is badly worn, it should be replaced.
Condenser core: there shall be no foreign matters on the surface to hinder heat exchange. When there are foreign matters on the surface, the dust on the surface shall be washed gently, and the high-pressure water or gas shall not be used for cleaning.
Fan motor: check whether the rotation is normal and whether the air volume is reduced.
Surrounding environment of evaporator: keep the cab clean and do not pile up too many sundries to prevent air circulation.
Evaporator core: whether there is dirt and filter on the surface, and whether there is dust or debris on the surface.
Fan motor: check normal rotation.
Check whether the clamp plug is loose and whether there is any friction with the body, which should be fixed and insulated.