Inverter fan damage judgment and replacement method - Database & Sql Blog Articles

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Judgment of damage to the inverter fan (1) Measure whether the fan power supply voltage is normal. If the fan power supply is not normal, first fix the fan power supply.
(2) After confirming that the fan power supply is normal, if the fan does not turn or rotate slowly, the fan is damaged and needs to be replaced.
Reasons for damage (1) The quality of the fan itself is not good, the wire package is burnt, partial short circuit, until the electronic circuit of the fan is damaged, or the fan lead is broken, the machine is stuck, the oil bearing is dry, and the plastic aging deformation is stuck.
(2) Poor environment, water vapor, condensation, corrosive gas, dirt blockage, too high temperature to deform the plastic.
Fan replacement (1) It is best to replace the new fan with the original model or the fan with superior performance compared with the original model. The same size fan contains a variety of air volume and wind pressure varieties.
(2) Disassembly of the fan There are many situations in which the internal movement of the inverter should be affected. Recording and marking should be done during disassembly to prevent errors when replacing the original. Some designs have fully considered the convenience of replacement. At this time, it is necessary to see clearly, and do not blindly dismantle and move.
(3) When installing the screws, the torque should be appropriate. Do not deform or break the plastic parts due to over-tightening, nor loose or loose due to vibration. The fan blades of the fan must not touch the windshield, and must not be equipped with an anti-fan.
(4) When selecting the fan, pay attention to the fact that the fan bearing is a ball bearing, and the mechanical life of the oil-impregnated bearing is short. In terms of simple bearing life, the life of the fan will be 10 times higher than that of the ball bearing.
(5) The fan is installed in the air outlet to withstand high temperature airflow, and the fan blade is made of metal or temperature resistant plastic. Do not use inferior plastic to avoid deformation.
(6) The power supply connection should be correct and good. The rotor blades should not be rubbed against the wires. After installation, they should be energized and tested.
(7) It is very important to clean the blockage of the air duct and the heat sink. Many inverters are overheated or damaged due to blockage of the air duct.