First: Solution to vibration of high-pressure centrifugal fans

 

1. The impeller rubs when rotating, which will cause abnormal noise and intense vibration. The reason is that the fan casing or impeller parts are deformed during storage, transportation, installation, and use.

 

2. The fan foot bolts are not tightened.

 

3. The transmission parts or casing are deformed during storage, transportation, installation, and use, and the impeller balance is destroyed. The reasons are as follows: the impeller is deformed under pressure; the connection between the impeller and the sleeve is loose; the main shaft is deformed due to improper lifting; the motor fixing screw is loose;

 

Second: Solution to excessive noise during the operation of the high-pressure centrifugal fans

 

a. Check whether the bearing is damaged. If damaged, replace the bearing in time

 

b. Check whether bearing grease needs to be added

 

c. If the impeller is worn, the impeller or pump head needs to be replaced

 

d. Check whether the fasteners are loose or fall off. If so, tighten the fasteners

 

e. If there are foreign objects in the high-pressure centrifugal fans, remove the foreign objects or replace the pump head

 

Third: Solution to the heating of the high-pressure centrifugal fans

 

1. The motor bearing is damaged, the matching clearance is small, and it does not meet the requirements;

 

2. The motor is running in phase or the wiring is wrong;

 

3. The power supply voltage is too low.

 

4. The system resistance is too large or the fan selection is unreasonable, resulting in motor overload operation. The reason is that the pipe network resistance coefficient is too large or the valve of the pipeline coefficient is not opened.

 

Fourth: Solutions to the sudden stop of high-pressure centrifugal fans during operation

 

a. Power is not connected - connect power

 

b. Motor does not work - check motor wiring or replace motor

 

c. Fan head is damaged - repair fan or replace

 

d. Foreign objects are stuck in the fan - remove foreign objects

 

Fifth: Solutions to the reduced flow rate during the operation of high-pressure centrifugal fans

 

1. Inlet and outlet air filters are blocked - clean filters

 

2. Pump head speed is reduced - power supply voltage is low or motor failure

 

3. Pipeline resistance increases - reduce pipeline resistance

 

4. Working state increases - adjust working state

 

5. Motor reverses - rewire motor

 

Sixth: Solutions to the reduced pressure during the operation of high-pressure centrifugal fans

 

1. Pump head speed is reduced - power supply voltage is low or motor failure

 

2. Pipeline resistance increases - reduce pipeline resistance

 

3. Working state changes - adjust working state

 

4. Motor reverses - rewire motor