Professional installation is highly recommended! The double color yellow and green wire of cable must be grounding safely. Step 1: Waterproof tape winding adapter Step 2: Fix the deep well pump lifting rope. Step 3: Fix the water pipe Notes 1.Please confirm whether the voltage and frequency meet the local standard before ordering.And note that it is forbidden to use in the absence of water. 2.Please note that the pumping speed is related to the depth of water intake.The deeper the water intake, the lower the speed will be. 3.Please note that the pump has a built-in check valve, however, this check valve is only used to prevent water from flowing back into the pump and causing the impeller to rotate in the opposite direction, but if the pump is to be used in the pressure system, at least one external check valve needs to be used in the pipeline. 4.Please note that it is forbidden to touch the electric pump when it is working.Please do not wash, swim or enter the water of livestock nearby to avoid electric shock.To prevent electric shock, it is strictly prohibited to lift and pull the cable.Please cut off the power supply when maintaining, moving or cleaning the electric pump. 5.Please read the user manual carefully before use and pay special attention to the safety precautions included. 6.Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before you place the order. Notes 1.Please confirm whether the voltage and frequency meet the local standard before ordering.And note that it is forbidden to use in the absence of water. 2.Please note that the pumping speed is related to the depth of water intake.The deeper the water intake, the lower the speed will be. 3.Please note that the pump has a built-in check valve, however, this check valve is only used to prevent water from flowing back into the pump and causing the impeller to rotate in the opposite direction, but if the pump is to be used in the pressure system, at least one external check valve needs to be used in the pipeline. 4.Please note that it is forbidden to touch the electric pump when it is working.Please do not wash, swim or enter the water of livestock nearby to avoid electric shock.To prevent electric shock, it is strictly prohibited to lift and pull the cable.Please cut off the power supply when maintaining, moving or cleaning the electric pump. 5.Please read the user manual carefully before use and pay special attention to the safety precautions included. 6.Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before you place the order.