Case 1: Motor Start Failure
A KIMAIR air compressor in a factory suddenly failed to start the motor during use. The operator tried to restart it several times, but the motor still did not work properly. To solve this problem, the maintenance team conducted a detailed troubleshooting. The maintenance staff checked the power supply line and confirmed that the power supply was normal, and the voltage and frequency were within the specified range. Then, they checked the wiring of the motor and found that the terminal was loose, resulting in poor contact. The maintenance staff re-tightened the terminal and performed an insulation test to ensure that the wiring was safe and reliable. However, the motor still could not start. The maintenance personnel further checked the windings of the motor and measured the resistance value of the windings with a multimeter. They found that the resistance value of one phase of the winding was abnormally high, indicating that the phase winding might be broken. To confirm this judgment, the maintenance personnel disassembled the motor and found that the winding was indeed broken. In response to this problem, the maintenance personnel decided to replace the damaged winding. They carefully measured the size and specifications of the winding, purchased suitable winding materials, and rewound it. After the winding was completed, the maintenance personnel conducted insulation tests and resistance measurements again to confirm that the winding had returned to normal. After reinstalling the motor, the maintenance personnel conducted a no-load test, and the motor started normally and ran smoothly. In order to ensure the long-term and stable operation of the motor, the maintenance personnel also recommended that the factory regularly perform maintenance on the motor, including checking the tightness of the terminal blocks and the insulation performance of the windings.
Case 2: Insufficient Air Pressure
he KIMAIR air compressor of a factory had insufficient air pressure during use, causing the pneumatic tools on the production line to fail to work properly. The maintenance team quickly intervened and conducted a comprehensive inspection of the compressor. The maintenance personnel checked the air filter and found that the filter was severely clogged, resulting in insufficient air intake. They replaced the new air filter and cleaned the intake duct to ensure smooth air intake. However, the air pressure problem still exists. Next, the maintenance personnel checked the air valve of the compressor and found that the sealing performance of the air valve had deteriorated, resulting in gas leakage. They disassembled the air valve and found that the sealing ring of the air valve was worn and needed to be replaced. The maintenance personnel replaced the new sealing ring and reinstalled the air valve to ensure that the sealing performance of the air valve was good. Despite this, the air pressure problem was not completely solved. The maintenance personnel further checked the cylinder of the compressor and found that the piston ring of the cylinder was severely worn, resulting in gas leakage inside the cylinder. They replaced the new piston ring and performed a sealing test on the cylinder to ensure that there was no leakage inside the cylinder. After restarting the compressor, the air pressure gradually returned to normal, and the pneumatic tools on the production line also resumed normal operation. In order to prevent similar problems from happening again, the maintenance personnel suggested that the factory regularly check and replace the air filter, air valve sealing ring and piston ring to ensure the normal operation of the compressor.
Case 3: Abnormal Noise Treatment
A KIMAIR air compressor in a factory made abnormal noise during operation, which seriously affected the working environment. After receiving the report, the maintenance team quickly went to the site for inspection. The maintenance personnel checked the bearings of the compressor and found that the bearings were not lubricated enough, causing noise during operation. They disassembled the bearings and found that the grease in the bearings had dried up and needed to be replaced. The maintenance personnel replaced the new grease and reinstalled the bearings to ensure that the bearings were well lubricated. However, the abnormal noise still existed. The maintenance personnel further checked the belt of the compressor and found that the belt tension was insufficient, causing the belt to slip during operation and generate noise. They adjusted the tension of the belt and performed a running test to ensure that the belt ran smoothly. Despite this, the noise problem was not completely solved. The maintenance personnel continued to check the cylinder of the compressor and found that the gap between the piston and the cylinder wall of the cylinder was too large, causing abnormal noise during operation. They adjusted the gap between the piston and the cylinder wall and performed a sealing test to ensure that there was no leakage inside the cylinder. After restarting the compressor, the abnormal noise was significantly reduced and the operation was smooth. In order to ensure the long-term stable operation of the compressor, the maintenance personnel recommend that the factory regularly inspect and maintain the bearings, belts and cylinders to ensure the normal operation of each component. They also recommend that the factory pay attention to the maintenance of the lubrication system in daily maintenance, regularly replace the grease, and ensure that each component is well lubricated.
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