Before the axial fan is used, the clearance dimensions of each part of the fan should be checked, and whether there is any scraping phenomenon between the rotating part and the fixed part. Check whether the rotation of the impeller is consistent with the signs, whether the wiring and meters of each part are normal, whether there are any abnormal phenomena such as water leakage, electricity leakage, oil leakage, peculiar smell, abnormal sound, abnormal earthquake, loosening and so on.
In the process of using axial flow fans, the economic adjustment method should be adopted as far as possible. The advanced technology should be introduced to carry out the axial flow fan with high efficiency and energy saving, replace the old axial flow fan in use, and use the axial flow smoke exhausting fan with low efficiency and no transformation value at any time, and step by step elimination measures should be adopted. We will promote the use of highly efficient and energy-saving axial flow fans, transform the axial fans that are counteracted, and generate efficient series of energy saving fans, and promote them in various fields of national economy.
Axial fan When starting, the current of the motor will be 5-6 times higher than the rated value. It will not only affect the service life of the motor but also consume more power. The system will leave some allowance in the design of the motor when the system is designed. The speed of the motor is fixed, but sometimes it needs to run at a lower or higher speed in the actual use process, so it is very necessary to carry out the frequency conversion transformation. The inverter can realize the soft start of the motor and achieve the purpose of energy saving and speed regulation by changing the frequency of the input voltage of the device, and it can provide over-current, overvoltage and overload protection functions to the equipment.
Axial flow fans should check whether the oil level of the bearing is between the highest and the lowest oil level, and close the adjusting door. If the operation is in good condition, then turn to full load (full pressure and flow) operation. With full load operation, no less than 2 of the new installed fan will disappear, and the ventilator after repair will not be less than half an hour. After the fan starts, the large adjusting door is gradually opened to normal working condition. During the operation, the temperature rise of the bearing shall not exceed 40 degrees C of the surrounding environment. The mean square root vibration velocity of bearing parts should not exceed 6.3mm/s. It is found that the fan has intense noise, the temperature of the bearing rises violently, and the fan vibrate and bump.
Tags: Axial fan Positive pressure air blower Exhaust fan