Precautions for the use of centrifugal fans

Centrifugal fans need to pay attention to many aspects when using to ensure their normal operation and extend their service life. Here are some key considerations:

First, safe operation

Operators should be professionally trained to understand the working principles and safe operating procedures of centrifugal fans.

Wear personal protective equipment, such as gloves and goggles, during operation to ensure personal safety.

Comply with electrical safety regulations and ensure that electrical lines are well grounded to avoid problems such as short circuit and overload.

Second, environmental requirements

Keep the surrounding environment of the centrifugal fan clean and well-ventilated, regularly clean up dust, and avoid blocking the air inlet and outlet of the fan.

Control the ambient humidity to prevent corrosion and rust of fan components caused by excessive humidity.

Ensure that the ambient temperature is within the appropriate range (such as 0°C to 40°C), too high or too low temperature will affect the normal operation of the fan.

Third, equipment inspection and maintenance

Regular inspection and maintenance of fan components, including cleaning the internal and external surfaces of the fan, wind blades, and replacing the filter screen, etc., to ensure the cleanliness and smooth operation of the ventilation system.

Check whether the fan bearing is in normal operation, whether the fastening screws are loose, and whether the bearing lubrication is good.

Carry out regular inspection and maintenance such as motor insulation testing and blade cleaning to ensure that the equipment is in good working condition.

Check the working status of electrical equipment regularly and deal with faults and potential problems in time.

Fourth, operation management

Reasonable selection of centrifugal fans according to work needs, and avoid overload use to prevent problems such as overheating, increased noise, and increased energy consumption of fans.

Reasonable adjustment of centrifugal fan speed to improve operating efficiency and save energy.

Before shutdown, the fan load should be gradually reduced, and ensure that no load operation for a period of time before closing the fan.

When starting the fan, avoid excessive load and frequent start and stop to extend the service life of the equipment.

Fifth, abnormal situation handling

During operation, the key parameters such as the running current and bearing temperature of the fan should be closely monitored, and the machine should stop for inspection immediately if any abnormality is found.

If the fan produces violent vibration or abnormal sound, it should be stopped immediately and check the cause, and start again after troubleshooting.

In case of emergency, such as bearing smoke, abnormal oil pressure, etc., the main motor should be immediately pressed the stop button for emergency shutdown.

Sixth, other precautions

The centrifugal fan allows full voltage starting or buck electric, but it should be noted that the current at full voltage starting is about 5-7 times the rated current, and the buck starting should be used when the power grid capacity is insufficient.

When the two-speed centrifugal fan is tested, the low speed should be started first and the rotation direction should be checked, and then the high speed should be started after the fan is stationary.

When installing the centrifugal fan, ensure that the fan is naturally connected to the foundation joint surface and the inlet and outlet air pipes, do not force the connection, and pay attention to the horizontal position of the fan.

In summary, the precautions for the use of centrifugal fans involve many aspects, such as safe operation, environmental requirements, equipment inspection and maintenance, operation management, and abnormal handling. Strict compliance with these precautions can ensure the normal operation and extend the service life of the centrifugal fan.