When removing the dirt and residual concrete slag inside and outside the mixing drum from feeding, and when the maintenance personnel enter the drum for maintenance and welding repair, it is necessary to turn off the engine of the truck to stop the rotation of the mixing drum completely

每天工作结束后，司机应负责向搅拌筒内注入清水并高速(14—18转/分)旋转5—10分钟，然后将水排去，以保证筒内清洁。用高压水清洗搅拌筒各个部分时，应注意避开仪表及操纵杆等部位。压力水喷嘴与车身油漆表面间的距离不得小于四十厘米。

At the end of each day's work, the driver shall be responsible for injecting clean water into the mixing drum and rotating at high speed (14-18 RPM) for 5-10 minutes, and then discharging the water to ensure the cleanness of the drum. When using high-pressure water to clean each part of the mixing drum, attention should be paid to avoid the instrument and control rod. The distance between the pressure water nozzle and the body paint surface shall not be less than 40 cm.

在施工现场卸料完毕后，应立即用搅拌车随带的软管冲洗进料斗、出料斗、卸料溜槽等处，粘附在车身各处的污泥及混凝土。在返回搅拌站的途中，应向搅拌筒内注150---200L水以清洗筒壁及叶片粘结的混凝土残渣。

After unloading at the construction site, the feeding hopper, discharging hopper, discharging chute, etc. shall be washed immediately with the hose attached to the mixer truck to remove the sludge and concrete adhered to the vehicle body. On the way back to the mixing plant, 150-200l water should be injected into the mixing drum to clean the concrete residue bonded on the wall and blades of the drum.

在机修人员进入筒内工作期间，必须保证拌筒内通风良好，空气新鲜，无可然气体及有害灰尘，氧气供应充足。在筒内使用电动工具操作时，操作人员必须有良好的绝缘保护。

During the working period, the maintenance personnel must ensure that the mixing cylinder is well ventilated, the air is fresh, there is no natural gas and harmful dust, and the oxygen supply is sufficient. When using electric tools in the cylinder, operators must have good insulation protection.