A: The bearing box vibrates violently;

B: The lubricating grease is of poor quality, deteriorated, contains dust, sticky sand, dirt and other impurities;

C: The tightening force of the bearing box cover and seat connecting bolts is too large or too small;

D: The shaft and the rolling bearing are installed skewed, and the front and rear bearings are not concentric;

E: The rolling bearing is damaged.

3. The motor current of the dust collector fan is too large and the temperature rise is too high.

solution

A: The valve or throttle valve in the intake pipe is not closed tightly when driving;

B: The flow rate exceeds the specified value, or the air duct leaks;

C: The density of the gas conveyed by the fan is too large;

D: The input voltage of the motor is too low or the single-phase power failure of the power supply;

E: Affected by the violent vibration of the bearing box;

F: The working condition of the fan has deteriorated, or it has broken down.

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