1

Machine does not start

Wiring is abnormal, control wiring is incorrect, or the wire contact is not good

Check wiring

The motor and the VFD parameters do not match

Adjust the VFP parameters or contact the manufacturer

Overloaded

Reduce load

Motor insulation is too low

Contact the manufacturer

Others

Contact the manufacturer

2

The motor has abnormal noise or excessive vibration

Motor and rotary drum are not concentric

Find the reason and reinstall

The motor and VFD parameters do not match

Adjust the VFD parameters or contact the manufacturer

Overloaded

Reduce load

Bearing is short of oil or damages

Fill lubricating oil or contact the manufacturer

Others

Contact the manufacturer

3

Motor has too high temperature rise or is smoking

Overloaded

Reduce load

The cooling system is not connected with the motor

Connect the waterway of the cooling system

Poor circuit contact

Check wiring

4

Bearing is overheated

Bearing damages

Contact the manufacturer for replacement

Over- or under-greasing, or grease has impurities

Adjust or replace