1. After the self-loading mixer truck has finished unloading at the construction site, the hoses that come with the mixer should be used to flush the feed hopper, discharge hopper, unloading chute, etc., to remove the sludge and concrete adhering to the body. On the way back to the mixing station, 150---200L of water should be poured into the mixing drum to clean the wall of the drum and the cement residue bonded to the blades.

　　2. After the work is completed every day, the driver should be responsible for filling the mixing drum with clean water and rotating it at high speed (14-18 rpm) for 5-10 minutes, and then draining the water to ensure that the drum is clean. When cleaning each part of the mixing drum with high-pressure water, pay attention to avoiding parts such as meters and joysticks. The distance between the pressure water nozzle and the exterior of the body paint shall not be less than 40 cm.

　　3. When removing dirt and remaining concrete slag inside and outside the mixing drum, as well as when mechanics enter the drum for maintenance and welding repairs, the car engine must be turned off to stop the mixing drum from rolling completely. When the mechanics enter the barrel to work, they must ensure that the mixing barrel is well ventilated, the air is fresh, there is no gas and harmful dust, and the oxygen supply is sufficient. When using electric tools in the barrel, the operator must have good insulation protection.

　　4. During operation, it is not allowed to reach into the rotating mixing drum, and it is forbidden to reach into the connecting part of the main discharge chute and the extended discharge chute to take the initiative, and take the initiative to hand over the mixing truck. What should be paid attention to during operation to avoid accidents.

Because concrete will set into a hard block in a short time and is corrosive to steel and paint, it is necessary to wash the concrete adhering to the concrete storage tank and the inlet and outlet every time after using the concrete storage tank. Carefully performed homework. Including:

1. Flush the inlet with water before each filling to keep the inlet moist during filling;

2. Fill the washing water tank that comes with the car with water while loading the material;

3. After loading, flush the inlet to clean the remaining concrete near the inlet;

4. After unloading at the construction site, flush the discharge chute, and then add 30-40 L of cleaning water to the concrete storage tank; insist on the concrete storage tank to roll forward and slowly when the vehicle returns;

5. Remember to drain the sewage in the concrete storage tank before loading the next time;

6. At the end of the day, clean the concrete storage tank and around the material inlet and outlet completely to ensure that there is no cement and concrete agglomerates.