High-Temperature Fan

What is a high-temperature fan?

High-temperature fans are radial fans designed to handle hot air that standard fans cannot withstand. The impeller and housing materials, as well as the motor placement, are selected to limit heat from reaching the motor. Hot air circulation in ovens, drying tunnels, hot air exhaust above ovens and stoves, heat treatment, and paint drying applications are the main areas of use for these fans.

Selection criteria

• Temperature resistance: The maximum air temperature the fan can handle must be higher than the application temperature.
• Flow rate and pressure: Determined by the resistance of the oven or duct system.
• Motor position: The motor must be isolated from the hot airflow and well cooled.
• Electrical: The model in this category operates on single-phase supply.

If the temperature rating is not stated in the product information, suitability must be confirmed before use.

Installation and use

The fan must be connected to the hot air duct in an airtight manner, and the section where the motor is located must be kept cool by natural or forced ventilation. When the fan stops, to prevent hot air from rising toward the motor side, it may be possible to keep the fan running until the environment cools down. Protective measures must be taken against the risk of contact with hot surfaces.

Maintenance

High temperatures can cause bearing lubricants to age more quickly; bearing noise and vibration should be checked regularly. Residue that accumulates on the impeller and housing should be cleaned. Ensure that electrical connections are made with heat-resistant cables.

Frequently asked questions

Can a standard fan be used with hot air?

Not recommended; standard fan motors and materials may not be suitable for high temperatures.

What temperature can a high-temperature fan withstand?

This value varies by model. Do not exceed the limit stated in the product information.

Why is the motor overheating?

The area around the motor may not be sufficiently ventilated. Check the installation location and airflow.

Is it suitable for oven circulation?

If the temperature class is appropriate, it can be used for air circulation inside an oven.

How often should the fan be serviced?

It depends on usage intensity. With heavy use, bearing and blade inspections should be carried out more frequently.

What fans are available for standard-temperature applications?

For different needs, see the snail and radial fans category.

What is the difference between a high-temperature fan and a boiler fan?

Boiler fans generally blow combustion air and move air at ambient temperature. High-temperature fans are designed to move air that is already at elevated temperatures.