I. Magnetic Suction Failure Type Faults
1. No Magnetic Suction Effect: During the operation of the equipment, there is no reaction of adsorbing iron impurities. The impurities pass through the iron removal area normally with the material, and there is no retention effect at all.
2. Reduced Magnetic Suction Force: Iron impurities can be adsorbed, but the adsorption is not firm. With slight vibration or impact from the material, the adsorbed impurities are prone to fall back into the material.
3. Partial Failure of Magnetic Suction Area: Only a part of the equipment's adsorption surface has magnetic suction effect, while the remaining area has no adsorption capability. Iron impurities pass through the failed area.
II. Abnormal Operation Type Faults
1. Unable to Start After Power On: After connecting the power supply, the equipment shows no operation reaction, no magnetic field is generated, and there are no mechanical operation signs.
2. Sudden Shutdown During Operation: After the equipment starts normally, it stops working for no reason during operation. The magnetic suction function disappears simultaneously. Restarting may restore it or it may still not operate.
3. Abnormal Noise After Startup: When the equipment is powered on, there are abnormal sounds such as buzzing, hissing, and clicking. The noise may increase with the running time. In some cases, the magnetic suction effect is affected after the noise occurs.
4. Abnormal Vibration of the Machine Body: During operation, the machine body produces obvious vibration, which exceeds the normal range of slight vibration. The vibration is likely to cause components to loosen, further affecting the magnetic suction effect.
III. Abnormal Temperature Type Faults
1. Rapid Temperature Rise of the Machine Body: Within a short period after the equipment starts, the outer shell of the machine body shows a significant temperature increase. Touching it feels hot. The rapid temperature rise may trigger a shutdown protection.
2. Local Overheating: One part of the equipment (such as the coil area or connection points) has a temperature much higher than other parts. There is a slight burnt smell. The magnetic suction effect gradually weakens as the temperature rises.
3. Failure of Heat Dissipation: During operation, the equipment continues to heat up without a natural cooling trend. Even if the material flow rate is reduced, the temperature still continues to rise, eventually triggering overheating protection and shutting down.
IV. Electrical System Faults
1. Abnormal Power Indicator Light: After powering on, the indicator light does not light up, flashes, or has a different light state from the actual operation of the equipment (such as the light is on but there is no magnetic field).
2. Fault at Connection Points: The connection points show signs of loosening, oxidation, or sparking, accompanied by a slight burnt smell. This can lead to unstable power supply and inconsistent magnetic suction effect.
3. Electrical Safety Risk: During operation, the machine body has a numb hand feeling. The grounding protection device may trigger an alarm, presenting an electrical safety risk.
4. Failure of Control Components: When adjusting the control switches or knobs related to magnetic suction, there is no change in the magnetic suction effect. The control components lose their adjustment function.
V. Mechanical Structure Faults
1. Stuck Unloading Mechanism: The unloading scraper, flap, etc., cannot operate normally. The adsorbed iron impurities cannot be cleared in time, accumulating on the adsorption surface, eventually causing the magnetic suction area to be covered and fail.
2. Incomplete Unloading: The unloading mechanism can operate normally, but the adsorbed impurities cannot be completely scraped off or脱落. There are still some impurities remaining on the adsorption surface, which accumulates over time and affects the magnetic suction effect.
3. Loose Machine Body Components： Components such as the fixed brackets, adsorption surface shells, and connection parts of the equipment become loose. During operation, there is shaking and abnormal noise, which may cause the position of the magnetic suction area to shift.
4. Inefficient Material Flow： The inlet and outlet parts of the equipment are blocked or jammed. When the material passes through the iron removal area, the flow rate is uneven and accumulates. The iron impurities cannot fully contact the adsorption surface, reducing the iron removal effect.
VI. Poor Iron Removal Effect (Not Completely Failure of Magnetic Suction, Comprehensive Fault Manifestation)
1. High Leakage Rate： The equipment has magnetic suction effect, but a large amount of iron impurities are not adsorbed and flow out with the finished product. The iron removal efficiency drops significantly.
2. Mixed Adsorbed Impurities： In addition to adsorbing iron impurities, a large amount of non-ferromagnetic impurities are also adsorbed on the magnetic suction surface. This can clog the unloading mechanism, and it also increases the cost of manual cleaning.
3. Unstable Iron Removal Effect： During the iron removal process of the same batch of materials, sometimes the removal is thorough, and sometimes there is severe leakage. The magnetic suction effect fluctuates irregularly.
