In the process of use, the cooling effect of radiator of concrete mixer truck is affected by corrosion and scaling. Cleaning and descaling are effective methods to restore the heat dissipation capacity of radiator. When maintaining vehicle diesel engine, the cooling system of engine must be cleaned. If you don't have too many scales, you can rinse it with water. At this time, the radiator and engine water jacket of concrete mixer should be cleaned separately.

预先移除恒温器，并且阻塞气缸盖上的出水弯管的旁通孔。在供水时使用特殊的冲洗枪供给压缩空气，冲洗效果更好。当发动机运转时，冲洗水流的方向应与水循环方向相反。为了减小水垢，优选在冷却系统中添加软水;在低温下，好加入防冻剂。
             

Remove the thermostat in advance and block the bypass hole of the outlet elbow on the cylinder head. When supplying water, a special flushing gun is used to supply compressed air, so the flushing effect is better. When the engine is running, the direction of flushing water flow should be opposite to the direction of water circulation. In order to reduce the scale, it is better to add soft water in the cooling system; at low temperature, it is better to add antifreeze.

混凝土搅拌车散热器结垢较多时，应采用化学清洗剂清洗。也就是说，酸或碱物质与水垢之间的化学反应可以产生水溶性物质来除去水垢。清洗时好采用循环法，即先用酸溶液清洗，再用碱性溶液清洗和中和。清洗时，清洁剂在气缸体、水套或散热器内循环一定压力（通常为10L（PA），3-5分钟后即可清洗。在清洗散热器时，提供了清洗水套和散热器的溶液及清洗方法。

When the radiator of concrete mixer has more scale, it should be cleaned with chemical cleaning agent. That is to say, the chemical reaction between acid or alkali substance and scale can produce water-soluble substance to remove scale. When cleaning, it is better to use circulation method, that is, first use acid solution to clean, then use alkaline solution to clean and neutralize. When cleaning, the cleaner circulates a certain pressure (usually 10L (PA)) in the cylinder block, water jacket or radiator, and can be cleaned after 3-5 minutes. When cleaning the radiator, the solution and cleaning method for cleaning the water jacket and radiator are provided.