Shaanxi Asynchronous SIMO Motor (www.ximadianji.cn) documentation: 1. The fan generates high temperatures during operation; therefore, avoid touching the housing to prevent burns.

2. If the fan operates unsteadily or produces abnormal noise during use, turn off the power supply and perform maintenance.

3. For continuous operation of the fan, refer to the airflow–static pressure curve chart in the catalog and operate only within the specified curve range. However, operation beyond the applicable range is prohibited when approaching high-pressure conditions. If operation near shut-off pressure is required during use, it is recommended to install a pressure-relief valve in the duct. When the duct is closed, the relief valve releases regulated air to ensure the fan’s service life. If the fan operates under a fully closed duct condition, its temperature will rise sharply. In such cases, continuous operation must be avoided to prevent deformation or damage. If intermittent operation is necessary, it is preferable to control it via an air valve switch.

4. Fan air temperature variation: When airflow approaches shut-off conditions, temperature rises sharply; therefore, this situation requires special attention. If temperature rise is expected, do not place the fan in an enclosed room.