1. Installation

1. Placement of the fan:
   The fan should be placed in a location close to the production equipment and ventilation ducts within the ventilation system. Meanwhile, the bottom of the fan should be kept as far away as possible from being soaked by sediments and water, and its base must be stable, which will lay a good foundation for the subsequent stable operation of the fan.
2. Connection of the fan ducts:
   The inlet and outlet of the fan should be properly connected to air ducts or hoses. The connecting ducts should ensure good airtightness and there should be no air leakage. All connection parts should meet high sealing requirements to prevent gas leakage from affecting the normal operation of the fan.
3. Power wiring:
   The cross-sectional area of the cable should be accurately calculated according to the power of the motor and the length of the cable. Moreover, the power lines must strictly comply with safety specifications. The cable sleeves should be firmly connected, and the wire ends should not be stripped or exposed to avoid potential safety hazards caused by wiring problems.
4. Circuit connection:
   The circuits in the electrical control device should be properly adjusted, and the relevant equipment should be properly installed to ensure that the circuit connections are accurate and all electrical equipment can function normally.
5. Inspection:
   Carefully check whether all standard components are complete, firmly fixed, and whether the fastening screws are loose. At the same time, check whether the protective nets or cover plates are correctly installed and whether there are any factors that may hinder the normal rotation of the motor, so as to comprehensively ensure that the fan is in good installation condition.
6. Trial operation:
   After self-inspection and confirmation that there are no errors, issue the trial operation command and then conduct a trial operation with a small load. During this process, pay close attention to whether there are abnormal noises or vibrations in the fan, and check whether the noise level and the motor current are within the normal range, so as to detect and solve potential problems in time.

2. Startup Operation

1. Pre-start inspection:
   The wiring should be done correctly according to the color of the cable and the markings on the base to avoid fan failure or inability to start normally due to incorrect wiring.
2. Startup method:
   It is necessary to strictly follow the working requirements of the electrical device and the startup procedure of the volute centrifugal fan to start the fan, ensuring that the startup process is standardized and safe and that the fan can smoothly enter the operating state.
3. Debugging:
   After the fan is started, it is advisable to adjust the operating load. After the rotational speed stabilizes, conduct a full-load trial operation and check whether the fan rotates smoothly and whether all operating parameters are close to the preset technical specifications to ensure that the operating effect of the fan meets expectations.
4. Normal operation:
   After the fan is successfully started, it is necessary to check the operation status of the fan daily and pay attention to the temperature of the motor. Through these daily monitoring tasks, the stable and safe operation of the fan can be ensured, avoiding unexpected situations that may affect production activities.

3. Maintenance

1. Keep clean:
   During the daily use of the fan, it should always be kept clean. You can regularly use a soft-bristle brush to clean the internal and external surfaces of the fan, promptly clean up the dust accumulated in the volute, and also do a good job of cleaning the air outlet and inlet, which will help maintain the good working performance of the fan and reduce various problems caused by dust accumulation.
2. Lubrication maintenance:
   For the bearing parts of the volute centrifugal fan, an appropriate amount of lubricating oil should be added approximately every six months. In this way, friction and wear between components can be effectively prevented, and the noise generated during the operation of the fan can be reduced to a certain extent, thus prolonging the service life of key components such as bearings.
3. Maintenance of fasteners:
   During routine maintenance, regularly check the fasteners of the volute centrifugal fan to ensure that their tightness is appropriate. There should be no situation of “too tight may cause cracking, too loose may cause falling off”. Ensure that the components of the fan are firmly connected to avoid component loosening or even falling off due to fastener problems and affecting the normal operation of the fan.
4. Timely repair:
   Once a failure of the fan is detected, it must be dealt with in a timely manner without delay. Only in this way can the fan be guaranteed to be used normally, reducing the adverse impact on production and other aspects caused by shutdown due to failure.