文章來源： 作者：羅茨機電 發布時間：2022-02-26 瀏覽次數：541
Centrifugal fan is a kind of driven fluid machinery, which depends on the input mechanical energy to increase the gas pressure and discharge the gas. Centrifugal fans are used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings. Today's small series will tell you about the aspects that need to be paid attention to in the commissioning of centrifugal fans
The centrifugal fan is allowed to start under full voltage or step-down electric, but it should be noted that the current during full voltage starting is about 5-7 times of the rated current, and the step-down starting torque is directly proportional to the square of the voltage. When the power grid capacity is insufficient, step-down starting should be adopted.
2. During the commissioning of centrifugal fan, carefully read the product manual and check whether the wiring method is consistent with the wiring diagram; Carefully check whether the working voltage of the power supply to the fan meets the requirements, whether the power supply is out of phase or in the same phase, and whether the capacity of the electrical components meets the requirements.
3. The number of people during commissioning shall not be less than two. One person controls the power supply and one person observes the operation of the fan. If any abnormality is found, stop the machine for inspection; Xinxiang fan manufacturer suggests to check whether the rotation direction is correct first; After the centrifugal fan starts to operate, check whether the operating current of each phase is balanced and whether the current exceeds the rated current; In case of abnormality, stop the machine for inspection. After five minutes of operation, shut down the fan to check whether there is any abnormality, and then start it for operation after confirming that there is no abnormality.
4. When commissioning the two speed centrifugal fan, start the low speed first and check whether the rotation direction is correct; When starting the high-speed fan, wait until the fan is stationary, so as to prevent the high-speed reverse rotation from causing switch tripping and motor damage.
5. When the centrifugal fan reaches the normal speed, measure whether the input current of the fan is normal, and the operating current of the centrifugal fan shall not exceed its rated current. If the operating current exceeds its rated current, check whether the supplied voltage is normal.
The above is the knowledge brought to you today. Shaanxi centrifugal fan manufacturers have focused on the industry for many years and continuously provide users with valuable content. Please continue to pay attention to us for more content: http://www.makemoore.com