In order to ensure the use of failure and prolong the life of the sprayer, and in order to ensure the safety of the staff. The sprayer must be checked before and after use, and certain precautions must be observed during the spraying process. Before the operation, check whether the components of the sprayer are damaged, whether there is water leakage or not, and whether the spray is normal or not. First, use clean water for test spraying. When spraying pesticides, the operator should stand upwind position, pay attention to changes in the wind direction at any time, change the way of operation in a timely manner, as far as possible to apply drugs along the way. The liquid sprayer of the backpack sprayer must not be overfilled to prevent the liquid from spilling from the mouth of the sprayer and spilling it on the person applying the spray. The application time must also be chosen correctly to avoid spraying at strong sunlight at noon, because pesticides are volatile at this time, and operators sweat more, pesticides easily penetrate the body through the pores. If the spray equipment malfunctions during the work process, it should immediately stop working, close the valve, and perform inspection and repair. If the sprayer pipe or the pump fails, the pressure in the pipe must be reduced. When opening the compressed gas tank, the compressed air inside the cylinder should be released first to prevent accidents. After each use, pour the remaining liquid in the barrel and wash it with clean water.

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