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How to judge the quality of the fan?

Category： Industry Information

time：2021-12-17

The normal judgment of the fan? Measure whether the power supply voltage of the fan is normal. If the power supply of the fan is abnormal, repair the power supply of the fan first. If the fan does not rotate or slowly rotates after confirming that the power supply of the fan is normal, the fan is damaged and needs to be replaced.

Find out the cause of fan damage: the quality of the fan itself is not good, the wire package is burned, and the local short circuit is short-circuited until the electronic circuit of the fan is damaged, or the fan lead is short-circuited, the machine is stuck, the oil bearing dries up, and the plastic is aged and deformed. Poor environment, water vapor, condensation, corrosive gases, dirt blockage, temperature is too high to make plastic deformation.

Fan replacement: it is better to choose the original model or the fan with superior performance than the original model when replacing the new fan. the fan of the same size contains many kinds of air volume and air pressure varieties. There are many situations in the disassembly of the fan that will affect the internal movement of the frequency converter. Records and marks should be made during the disassembly to prevent errors when the fan is installed back as it is. Some designs have fully considered the convenience of replacement. At this time, we should see clearly and do not blindly dismantle or impress. Fan in the installation of screws, the torque should be appropriate, not because of too tight plastic deformation and fracture, also can not be too loose and loose due to vibration. The fan blades of the fan shall not touch the fan hood, and no anti-fan shall be installed. When selecting the fan, pay attention to the ball bearing of the fan, and the oil bearing has a short mechanical life. In terms of simple bearing life, the life of the wind turbine will be 5 to 10 times higher when using ball bearings. The fan is installed at the air outlet to withstand high temperature gas, and its fan blades should be made of metal or temperature-resistant plastic, and inferior plastic should not be used to avoid deformation. The power supply should be connected correctly and well, and the rotor blades should not rub against the wires. After installation, power on and try. It is very important to clean up the blockage of the air duct and the heat sink. Many frequency converters are overheated or damaged due to the blockage of the air duct.

Keywords： How to judge the quality of the fan?

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