Abnormal impeller operation leads to excessive vibration; the Zhongyun platform provides precise localization and efficient repair.

In food manufacturing enterprises, air-conditioning fans are critical auxiliary equipment for maintaining optimal temperature and humidity conditions in production workshops. Recently, an air-conditioning fan in the sauce-processing workshop of a well-known food fermentation company experienced severe blade fouling over long-term operation, resulting in vibration velocities as high as 15.09 mm/s—far exceeding the safety threshold. The Zhongyun Technology Intelligent Operations and Maintenance Platform accurately identified the root cause as rotor imbalance and provided guidance for cleaning the fan impeller. Following this intervention, the vibration levels rapidly dropped to the normal range of 5–6 mm/s, thereby ensuring stable workshop conditions and consistent product quality.

I. Vibrations Remain Persistently High; Platform Provides End-to-End Monitoring

Since February 2026, the platform has continuously monitored high root-mean-square horizontal vibration velocities at the drive end of the air-conditioning fan motor, with peak values reaching 15.09 mm/s and consistently triggering threshold alarms. The system simultaneously issues a diagnostic conclusion of “imbalance or foundation loosening.” Alarm notifications include equipment information, measurement-point location, exceedance data, and corresponding time stamps, ensuring that potential hazards remain under continuous surveillance.

II. Diagnosis: Rotor Mass Imbalance

Upon receiving the alarm, the diagnostic team analyzed the equipment’s rotational speed and vibration characteristics and determined that the vibration was primarily caused by rotor imbalance. Given the workshop’s high-dust and high-humidity operating conditions, the fan impeller was found to be exhibiting abnormal behavior. It is therefore recommended that the equipment be promptly shut down for a thorough inspection of the impeller to identify and address the anomaly.

III. On-site Cleaning Validation: Rapid Damping of Vibration

Based on the platform’s recommendations, the enterprise scheduled a shutdown for inspection on April 6 and confirmed that the wind turbine rotor blades were heavily contaminated with production materials, which was highly consistent with the diagnostic findings. Maintenance personnel then disassembled and cleaned the rotor blades. Following the equipment restart on April 7, platform monitoring showed a significant reduction in vibration velocity to the normal range of 5–6 mm/s, the peak value of the second-order rotational frequency in the spectrum disappeared, and equipment operation returned to stable conditions.

IV. Core Value: Providing Reliable Assurance for Food- and Environment-Sensitive Equipment

The successful resolution of the dust accumulation fault in the air-conditioning fan impeller this time underscores the unique value of the Zhongyun Technology Intelligent O&M Platform in supporting equipment management within the food manufacturing sector:

1. Full Coverage: Extending monitoring from core production equipment to environmental support systems such as workshop air conditioning, thereby eliminating management blind spots and ensuring that every critical auxiliary device is under surveillance.
2. Early intervention: Before prolonged vibration exceeding allowable limits leads to equipment damage or environmental instability, precisely identify the root cause of impeller abnormalities and guide enterprises to carry out cleaning during production downtimes.
3. Precision Diagnostics: Utilizing waveform and spectrum analysis to replace subjective judgment with data-driven insights, thereby eliminating unnecessary disassembly and repairs and enhancing maintenance efficiency.

Zhongyun Technology will continuously iterate its AI diagnostic algorithms and sensor technologies to deliver end-to-end intelligent operations and maintenance solutions that provide “precise early warning, efficient response, and robust reliability” for environment-sensitive industries such as food and pharmaceuticals, thereby helping enterprises achieve digitalization of equipment management and intelligent decision-making in O&M.