Troubleshooting
Please compare your motor’s symptoms to find possible causes to fix the issues.
| Failure | Possible causes | Measures |
| The noise in reducer fasteners | The loose of fasteners | Tighten bolt/nut to specified torque, replace damaged bolt/nut |
| Reducer’s noise changes | Gear tooth get damaged | Contact customers service department to check all the gear, replace damaged bolt/nut |
| Bearing clearance large gap | Contact customer service department, adjust bearing clearance | |
| Broken bearing | Contact customer service department, replace damaged bearing | |
| Too high working temperature | High oil level of the inside box body | Check oil surface height, adjust if necessary |
| Long-used oil | Contact customer service department, check the last time oil change, replace if necessary | |
| Oil gets severely contaminated | Contact customer service department, change oil | |
| For reducer that equipped with lubricating oil cooling system, too low or too high coolant flow rate | Comprehensively regulate import and export of pipeline valves, check the free flow of water-cooling device | |
| Too high temperature for coolant | Check temperature and adjust according to demand | |
| Too low oil flow through water cooling device, reason: oil filter seriously blocked | Oil filter cleaning | |
| Oil pump mechanical failure | Contact customer service department, check whether the function of oil pump is normal or not, carry out repair or change the oil pump if necessary | |
| Reducer that is equipped with fan, fan cover’s air inlet and/or body get seriously polluted | Fan cover and housing cleaning | |
| Reducer equipped with cooling spiral pipe: cooling spiral tube fouling inside | Contact customer service department, clean or replace spiral pipe | |
| Too high temperature in bearing | Too high or too low oil level in reducer box | Check oil surface height at room temperature and refueling on-demand |
| Long-used oil | Contact customer service department, check last time oil change | |
| Oil pump’s mechanical failure | Contact customer service department, check whether the pump work normally or not, repair or change a new oil pump | |
| Broken bearing | Contact customer service department, check the vibration measuring data, check and change the bearing according to the need | |
| Bearing amplitude rise | Broken bearings | Contact customer service department, check the vibration measuring data, check and change the bearing according to the need |
| Damaged gear | Contact customer service department, check and change gear according to need | |
| Non-return device temperature is too high, check function failure | Damaged device | Contact customer service department, check and change non-return device according to need |
| Reducer leakage | Enclosure cover or joint sealing adverse | Check seal and connection, if necessary, change a new seal |
| Radial shaft seal failure | ontact customer service department, change new radial sealing ring | |
| Have water in oil | Have sundry in oil | Check if water does exist in oil, and laboratory analysis. |
| Lube oil cooler or the cooling spiral pipe failure | Contact customer service department, find out leakage position, change water cooler. | |
| Reducer machine ventilation when come up with cool air and condensation | Use the appropriate heat preservation material to guard the speed reducer, close air export or change its direction on structure | |
| Pressure alarm monitoring device, equipped with a pressure lubrication device, lubricating oil water cooling and air cooling is the reducer | Oil pressure＜0.5bars | At room temperature check the oil level height, according to the need to go check the oil filter, according to the need to change, contact the customer service department, check the normal functioning of the oil pump, oil pump repair or replace |
| Double switching filter indicator emit alarm | Double switching filter clogging | According to the specification toggle switch filter will be blocked filter down and clean up |
| Oil supply system fault | See operating instructions on oil supply system description | |
| Motor does not start | Power interrupt | Check wiring, when need correct |
| Fuse fusing | Replace the fuse | |
| Motor protection device has action | Check motor protective device Settings are correct, when need discharge failure | |
| Motor contactor action, not in the control system failure | Check motor contactor control, when need troubleshooting | |
| Motor not starting or starting difficulty | Motor should be delta connection method, but it is a star connection | Correct wiring way |
| Voltage or frequency gravely deviates from the rating when starting at least | Try to improve the power supply; Check the power cord section | |
| Direction of rotation error | Motor wiring error | Swapping two phase line |
| Rumble and current consumption | Damaged winding | Motor must send professional repair shop repair |
| Rotor windings touch | ||
| Fuse fusing or motor protective device immediately action | Conductor short-circuit | Short-circuit eliminate |
| Motor short circuit | Professional repair shop discharge failure | |
| Connection wires error | Correct connection mode | |
| Electrical grounding short circuit | Professional repair shop discharge failure |
