Industrial fan maintenance

Core steps of an industrial fan maintenance routine

• Vibration analysis carried out using certified instruments, enabling a comprehensive assessment of the fan’s overall condition.
• Component inspections: structural integrity checks, verification of bolt tightening on flanges and joints, impeller inspection, verification of motor shaft alignment and coaxiality, bearing inspection, transmission system checks, and inspection of fan shaft seals.
• Lubrication: appropriate lubrication of moving parts according to manufacturer specifications to prevent friction, noise and premature wear.
• Functional and operational tests: start-up and operation at nominal conditions, measurement of absorbed current and voltage, measurement of aeraulic parameters, efficiency calculation and verification, and acoustic performance checks.
• Maintenance documentation: detailed records to track service history, analyse performance trends, and plan future interventions.

Maintenance by application and operating environment

While the core mechanical principles of industrial fan maintenance remain consistent, maintenance protocols vary significantly depending on the application, regulatory requirements, and operating conditions. CBI applies targeted procedures based on the specific sector and compliance standards involved.

Tunnel & Metro Fans

Tunnel and metro fans are life-safety devices used for smoke and heat extraction in underground infrastructures. These axial jet fans are certified according to EN 12101-3 and designed to operate at 400 °C for up to 2 hours in case of fire, ensuring reliable smoke management in emergency scenarios.

Typical maintenance activities include:

• visual inspection of the impeller, casing, supports, electrical cabling and tunnel anchoring systems;

• verification of suspension rods, support bolts, grilles and silencers;

• vibration measurements under operating conditions;

• monitoring of energy consumption during operation;

• inspection of electrical insulation and tightening of power terminals;

• verification of the condition and preload of spring vibration dampers.

Because these fans operate in critical safety applications and may remain inactive for extended periods, scheduled inspections and periodic testing are essential to ensure reliable operation when emergency smoke extraction is required.

Industrial Exhaust Fans

Exhaust fans are commonly installed in environments with high particulate concentration, grease, fumes, or contaminated air.

Maintenance prioritises:

• frequent cleaning of blades and housings to prevent imbalance;

• inspection of duct interfaces and inlet sections;

• verification of electrical components exposed to contaminants;

• corrosion checks in aggressive environments;

• monitoring of airflow performance to ensure extraction efficiency.

In these applications, cleaning frequency and contamination management are critical factors influencing service intervals.

Periodic Maintenance 

One of the key elements of our industrial fan maintenance service is frequency vibration analysis, also known as fan frequency analysis. This advanced technique allows us to accurately and predictively assess the machine's health status. By detecting any anomalies early, we can take preventive action to avoid failures and extend the lifespan of your industrial fan.

For urgent issues, our skilled technicians are ready to provide immediate support. For non-critical concerns, we can schedule future maintenance to ensure ongoing peak performance. We also offer predictive maintenance services to identify potential issues before they become serious.

Extraordinary Maintenance 

Our extraordinary maintenance service is designed to handle a wide range of issues, including damaged components, recalibration needs, and rotor shaft misalignment. We provide quick and accurate solutions worldwide, ensuring your industrial fan is back in operation as soon as possible. In addition to emergency interventions, we offer revamping services, where we replace parts of the fan to improve efficiency. This can be done either on-site or at our facilities in coordination with the client.

Why Choose Our Industrial Fan Maintenance

• Experience and expertise: our highly qualified technicians have extensive experience in industrial fan maintenance, ensuring the best care for your equipment.

• Predictive approach: utilizing advanced techniques like frequency vibration analysis, we can identify and address problems before they become critical.

• Flexibility: we offer maintenance services for both our fans and those from other manufacturers, providing comprehensive and reliable support.

• Revamping and upgrades: we coordinate with the client to replace and upgrade fan components, either on-site or at our facility, enhancing the fan’s efficiency.

Contact us for more information for all your industrial fan maintenance needs, including emergency repairs, predictive services, and revamping, our technical service team is ready to assist you. Reach out today to learn more about our maintenance subscription packages and on-site support.