1. Before starting the fan, it is necessary to check if there are any foreign objects in the flow channel to prevent damage to the fan impeller caused by foreign objects collision after starting.
2. Before starting the fan, please read the startup manual and motor user manual carefully, operate the starting equipment according to the requirements, and start the fan in the order of first level and then second level. Adjust the rotation direction to ensure the normal operation of the fan.
3. After the fan is started and reaches normal operation, it is necessary to observe in a timely manner whether the current of the motor exceeds the rated current; b. There is abnormal sound in the fan flow channel. If any problems are found, the machine should be stopped for inspection in a timely manner. Only after the cause is identified and the fault is eliminated can it enter normal operation.
4. During the use of the fan, there should be a record of its operation, which should be recorded by the system. This includes: a) the start and stop time of the fan, as well as the reason for the shutdown; b. Environmental temperature, temperature, and atmospheric pressure; c. Motor working voltage, working current, temperature of each bearing, and temperature of motor stator. Discovering items that exceed the target should be immediately shut down for inspection; d. The wind pressure and air volume of the fan; e. The time, quantity, and brand of adding and replacing molybdenum disulfide lithium based lubricating oil to the motor bearings; f. Abnormal situations discovered during regular inspections; g. Detailed information and troubleshooting of the malfunction.
5. When reverse wind is needed, cut off the power first and apply the handbrake. When braking, it is necessary to apply force slowly and not to lock it all at once. Only when the impeller stops rotating can it be reversed, otherwise it may burn out the electrical equipment.
6. During the operation of the fan, the motor should be maintained according to the motor manufacturer's instructions, and an appropriate amount of molybdenum disulfide lithium grease lubricating oil should be added.
7. Regular shutdown of the fan and comprehensive inspection of all components to ensure compliance with requirements:
a. Check the front and rear bearings of the motor. If problems are found, bearings should be replaced according to the model and molybdenum disulfide lithium based lubricating oil should be replaced. b. Check if the blades are loose and if the installation angle of the blades is the same as the original setting. Promptly address any issues discovered. c. Adjustment method for blade installation angle: Select the required installation angle based on the characteristic curve of the fan and the ventilation requirements of the mine. Open the hub cover plate, loosen the blade handle nut, and press the selected installation angle on the scale of the hub drum surface. Align the front of the blade with the scale line, tighten the blade handle nut, lock the nut, and cover the cover plate to complete the adjustment.
Attention: After adjusting the blades, it is necessary to check whether the installation angles of each blade are consistent, otherwise it needs to be readjusted.
8. Regularly check the reliability of measuring instruments to prevent accidents caused by the malfunction of thermometers, ammeters, etc.
9. Drivers and other personnel should conduct regular inspections. Once any abnormal sounds, vibrations, or heating phenomena are found, the machine should be immediately shut down for troubleshooting before starting.