1. Before installing the equipment, be sure to check whether the hinge matches the door and window frames and fans.

2. It is required to check whether the hinge groove matches the height, thickness and width of the hinge.

3. It should be checked whether the hinges and the screws and fasteners connected with them are matched.

4. The connection method of the hinge should match the material of the frame and the fan. For example, the hinge used for the steel frame wooden door is welded on the side connected with the steel frame, and the side connected with the wooden door leaf is fixed by wood screws.

5. When the two sheets of the hinge are asymmetrical, it should be distinguished which sheet should be connected with the fan, which sheet should be connected with the door and window frame, and the side connected with the three sections of the shaft should be fixed with the frame. , the side connected with the two sections of the shaft should be fixed with the frame.

6. When installing, it should be ensured that the hinge axes on the same fan are on the same vertical line, so as to avoid the situation of warping of the doors and windows.