coal mine use axial flow ventilation fan

Ventilation fan operation 1. During the use of ventilation fans, operation records should be prepared to record the operation status of the fans in accordance with relevant regulations, including: (1) Ventilation fan start time and shutdown time, reasons for shutdown. (2) Environmental temperature, humidity, and atmospheric pressure. (3) The working voltage, current, temperature of each bearing, and motor temperature of the motor should be checked immediately if any items exceed the standard. (4) The air volume and pressure of the ventilation fan. (5) The time, quantity, and brand of lubricating grease for bearing replacement. (6) Abnormal issues discovered during regular inspections and troubleshooting situations. The ventilation fan is equipped with non-stop air injection and oil discharge devices, which can add lubricating oil during operation. When the machine is shut down, the oil discharge port cover can be opened to discharge waste oil. The ventilation…