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In real-world operations of cabinet centrifugal fans, trips can occur due to a variety of environmental and operational factors. Here are the main reasons behind such issues:
1. A short dust collection pipe with a partially closed valve (typically a butterfly valve that isn't fully shut) may not create enough system resistance to trigger a trip. However, if the resistance is too low, it can still lead to improper operation or inefficiency.
2. On the other hand, when the pipeline is excessively long and the valve remains open, the accumulated resistance might exceed what the fan can handle, leading to an overload and subsequent trip.
3. Electrical faults, such as motor overloads, short circuits, or faulty control systems, can also cause the fan to trip unexpectedly.
4. Mechanical problems, including bearing wear, misalignment, or excessive vibration, can result in the fan tripping as a safety measure.
5. If the fan damper isn't fully opened during startup, it can restrict airflow and cause the motor to draw more current than it's rated for, eventually leading to a trip.
6. An oversized duct at the fan outlet can increase the required shaft power, putting extra strain on the motor and causing it to overload. This often results in current exceeding the rated value and triggering a trip.
7. In some cases, the dust collector or pipeline may have lower resistance than expected, which can disrupt the fan's normal operation and lead to unexpected shutdowns.
Understanding these causes is essential for proper maintenance and troubleshooting. For more detailed information, you can visit our website: exhaust fan, fan chassis, cabinet centrifugal fan, mixed flow fan.
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