1. When installing the valve, clean the valve cavity and sealing surface in advance. No dirt is allowed to attach and affect the sealing performance. Clean the sealing surface and add lubricating oil to the screw rod regularly.
2. Electric device, rear handle and screw rod are not allowed to be used for lifting.
3. When cleaning the valve cavity, clean (clean) the impurities in the pipeline to be installed, so as to prevent the dirt and impurities from rolling on the sealing surface and affecting the sealing performance.
4. In use, the valve shall be controlled by control box or manual device, without resorting to other auxiliary tools.
5. When the valve is not used for the time being, it should be stored in a dry room. The diameter of the two ends is blocked.
6. Before the valve leaves the factory, the opening and closing positions of the trip of denso have been adjusted. When the valve is installed on the pipeline for debugging, first switch to manual operation to open the butterfly valve disc about 30 degrees, and then restore manual operation to electric. Open and close the valve by pressing the button on the control box after confirming the correct wiring according to the manual, wiring diagram and control principle diagram of electric installation. Remember that if the power cord is connected backwards, it will cause travel switch failure, damage to the worm gear and electric and electric butterfly valve.