Some tips about the dryer malfunction and troubleshooting
The following table presents some tips about the dryer malfunction and troubleshooting.
Dryer Malfunction and Troubleshooting
| Trouble/s | Cause/s | Solution/s |
| Loosen or fallen chain accessories | Fastening bolts are loosen or fallen off. | Fasten the loosen bolts tightly. |
| The chain running direction is not correct. | The main motor running direction is not correct. | The main motor should be rewired. |
| High moisture content of the materials after processing.
|
The moisture content of the fed materials is too high. | Decrease the moisture content of the fed materials. |
| Exceeding the throughput range | Decrease the coming materials or increase drying sections. | |
| The temperature of the hot air is low. | Increase the steam power in a proper way. | |
| The air volume is not enough. | Increase opening of the air inlet in a proper way. | |
| There may be excessive ingredients in materials that are a barrier to drying. | Change the components. Modify the ration and formulation. | |
| Drying time is not enough. | Decrease the speed of the conveying belt, and increase drying time. | |
| Materials are dried in an uneven way which exceeds the standard rate.
|
There is an uneven volume of air on the conveyor belt surface. | Enhance the condition of air intake at both sides and make the amount of air intake equal at two sides. |
| The hot air temperature difference between the two sides is too much. |
Enhance the condition of air intake at both sides and make the amount of air intake equal at two sides. |
|
| The materials enter the dryer in an uneven way. | Distribute the materials evenly on the conveyor belt and enhance the feeding conditions. The load should be evenly distributed on the mesh in terms of its thickness. | |
| The discharged materials are agglomerated severely. | Reduce the materials moisture content in a proper way or decrease the temperature at the end of feeding section. | |
| The conveyor belt is damaged. | Repair the damaged conveyor belt immediately, or replace it with a new one. | |
| The moisture content of the feeding materials is not stable. | Make stable the moisture content of the feeding materials. |
* Warning: All machinery should be repaired, modified, and regulated after the main power board is cut off.
