Performance Characteristics of Roof Ventilation Fans

Jan 14, 2026

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The main reasons for the fan body temperature exceeding the normal value are as follows:

1. Motor phase loss or incorrect wiring;

2. Excessive system resistance or improper fan selection leading to motor overload, caused by excessive pipeline resistance coefficient or valves not being open;

3. Low power supply pressure;

4. Damaged motor bearings, insufficient clearance, or failure to meet requirements. Excessive fan body temperature is a serious problem, especially for critical mechanical equipment like axial flow fans and roof ventilators. Even minor abnormalities can affect the normal operation of the entire unit, and should be taken seriously.

 

The DWT-Ⅰ series of fans (models 12#-24#) utilizes advanced CAD software and undergoes multi-objective optimization design. By changing the speed, angle, and blade profile, the performance parameter range is expanded to meet the needs of different operating conditions, achieving fan-system matching for energy saving and noise reduction. With stable operation, long service life, low moment of inertia, and high dynamic stability, this fan boasts smooth operation and meets or exceeds the company's current performance standards, ensuring its leading position in the industry. It has a wide range of applications; the fan can be manufactured in explosion-proof versions to suit forced ventilation in flammable, explosive, and corrosive gas environments. Having passed multiple tests by provincial and municipal technical supervision bureaus, users can use it with confidence.

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