company news about Signs That Indicate a Faulty Motor in a dog food pellet extruder machine

Part 1: Stator Winding - Determining Damage to the Core Power Component.

The stator winding is the core component of the motor, generating the rotating magnetic field and providing power. Damage to it directly prevents the dog food pellet machine motor from operating normally. The diagnosis method is simple and easy to perform. First, visual inspection: Remove the motor's protective casing and observe the stator winding for signs of burning, blackening, or breakage. If the winding surface shows charring, insulation peeling, and exposed copper wires, it indicates the stator winding is burnt out and the motor cannot be repaired; it needs to be replaced directly. Second, tactile inspection: Touch the winding. If the winding feels hard and sticky, accompanied by a strong burnt smell, it is highly likely that the winding has overheated and burned out. Third, simple test: Use a multimeter to test the winding resistance. If the resistance is 0 or infinite, it indicates a short circuit or open circuit in the winding, directly indicating stator winding damage.

Part 2: Rotor Assembly - Determining Damage to the Power Transmission Component.

The rotor is the rotating core of the dog food pellet maker machine motor, responsible for converting electrical energy into mechanical energy and transmitting it to the pellet mill's pressure rollers and linkage shaft. Damage to it will lead to insufficient motor power and abnormal operation. There are three methods for judging whether a motor is damaged: First, rotation test: After powering off, gently rotate the motor shaft by hand. If the rotation is not smooth, there is jamming, or excessive resistance is felt during rotation, it is likely due to rotor eccentricity, rotor core wear, or friction and collision between the rotor and stator. Second, visual inspection: Observe the rotor surface. If the rotor core has scratches, wear, or corrosion, or if the rotor windings (squirrel-cage rotor) are broken or loose, it indicates that the rotor is damaged. Third, operational test: Start the motor. If the motor speed is unstable, vibrates violently, and is accompanied by a muffled "humming" sound, after ruling out problems with other components, it can be determined that the rotor is damaged.

Part 3: Bearing components, judging damage to operating support components.

Bearings are the "support points" for the operation of the dog food pellet mill motor, responsible for reducing friction during rotor rotation. Damage to bearings is a common motor fault, and the judgment method is intuitive and easy to understand. First, check for abnormal noise: If the bearing makes a "creaking" or "clicking" noise while the motor is running, and the noise worsens with increasing speed, it's highly likely that the bearing is worn, the ball bearings are damaged, or there is insufficient lubrication. Second, check the temperature: Touch the bearing area. If the temperature is significantly higher than other parts of the motor (above 60°C) and it's hot to the touch, the bearing is damaged. Third, check the rotation: After disconnecting the power, rotate the motor shaft by hand. If there is a jamming, shaking, or a noticeable "clunking" sound, it indicates that the bearing balls are damaged or the bearing housing is loose. The bearing needs to be replaced immediately, otherwise it will cause further damage to the motor.

Part 4: Check for damage to the wiring terminals and insulation layer, and other circuit connection components.

The wiring terminals and insulation layer are responsible for the circuit connection and safety protection of the dog food processing machine motor. Damage to them can cause the motor to fail to start, leakage, and other malfunctions. The method for checking is simple and easy to operate. First, check the wiring terminals: Observe whether the wiring terminals are loose, burnt, or show signs of oxidation. If the terminals are burnt, stuck, or cannot be tightened after loosening, it means that the terminals are damaged, which will lead to poor contact in the motor circuit and failure to start. Second, check the insulation layer: Observe whether the internal insulation layer of the motor (winding surface, inner wall of the motor housing) is damaged, aged, or peeling off. If the insulation layer is damaged, it will cause the motor to leak electricity and the winding to short-circuit. When tested with a test pen, the motor housing will be electrified. At this time, it can be determined that the insulation layer is damaged and the motor has a safety hazard.

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