Signal 1: The dog food processing machine motor cannot start and shows no response after power is applied. This is one of the most obvious signs of motor damage, and it can be quickly identified and troubleshooted in two main ways. First, if the motor makes no sound or vibrate after power is applied, and the dashboard displays nothing, it's highly likely that the internal windings are burnt out, the terminals are loose, or the power cord is damaged, preventing the circuit from connecting. Second, if there is a slight "humming" sound after power is applied, but the machine cannot start, and the motor is slightly warm, this is often due to a stuck bearing, a jammed rotor, or a damaged starting capacitor. In this case, power should be disconnected immediately to prevent further burnout of the windings. In practice, first check the power cord and terminals to rule out poor contact. If the machine still cannot start after this check, the motor is likely damaged.
Signal 2: The motor makes a noticeable abnormal noise and vibrates violently. Under normal circumstances, the dog food extruder machine motor will only emit a uniform, slight running sound. If abnormal noise occurs, accompanied by violent vibration of the equipment, it is highly likely that the motor components are damaged. Common abnormal noises can be categorized into three types: "Clicking" sounds, often caused by motor rotor eccentricity, severe bearing wear, or loose internal parts; "rustling" friction sounds, usually due to wear and tear on the stator and rotor windings, resulting in friction and collision; and a muffled "humming" sound with increased vibration, often indicating insufficient motor power or overload causing internal damage. If any of these signals occur, the machine should be stopped immediately for inspection to prevent further damage.
Signal 3: Severe motor overheating, with a rapid temperature spike. During normal operation, the motor of a dog food pellet extruder machine should be kept at 40-50℃, feeling warm but not hot to the touch. If, within 10-15 minutes of startup, the motor surface temperature spikes to over 70℃, or even becomes hot to the touch, smokes, or emits a burnt smell, it is highly likely due to a short circuit in the internal windings, a damaged cooling system, or a seized bearing, preventing heat dissipation. Especially when processing high-humidity, high-viscosity dog food ingredients, frequent motor overheating shutdowns, after ruling out overload and blocked cooling channels, indicate motor damage requiring immediate repair or replacement.
Signal 4: Pelletizing efficiency drops sharply, dog food pellet maker machine motor power is significantly insufficient. Insufficient motor power output is a typical sign of minor motor damage, easily overlooked but affecting production. Symptoms include: a significantly slower pellet mill roller speed, loose and uneven pellet formation, and a decrease in output of more than 30% compared to normal; the motor struggles to operate, accompanied by speed fluctuations, and even jamming, requiring frequent shutdowns for rest before resuming operation. This is often due to rotor wear and winding aging, leading to unstable power output. If not addressed promptly, it will further exacerbate motor damage and may even burn out the motor.
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