Pulverizer malfunction and troubleshooting
Some tips about pulverizer malfunction and troubleshooting are presented in the following Table:
Trouble | Cause/s | Solution/s |
Abnormal noise is heard from the machine. | External material has entered the machine.
Loosen screws fixing the hammer disc; Loosen geared ring or dividing flow cover; Grading impeller and convex cover collide. |
Remove the impurities, after opening the grading system.
Tighten the hammer’s fixing screws. Tighten the fastening screws of the geared ring and the cover of the dividing flow. Check the distance between the impeller and surroundings, it should not exceed 0.5 mm. . |
There is abnormal noise or vibration in bearings, or they are overheated. | External materials have entered the bearing chamber.
Bearings are damaged. Main shaft is deformed. |
Clean and dry the bearing chamber after dismounting it.
Replace the bearings. Replace the main shaft after finding the causes. |
The production capacity has reduced.
|
Adhesion of the grading impeller or geared ring by mesh;
Worn geared ring or hammer blade; The air has reduced in quantity
|
Remove the external materials adhered to grading impeller or geared ring;
Replace the old hammer blade or geared ring with new ones. Check the fan and the dust collector bag, then adjust the air in quantity |
Increased uneven grading size and mean particle size;
|
Worn grading impeller blades;
Adhesion of the grading impeller blades by mesh; Corroded grading impeller blades; Air leakage from pipeline and unstable air volume
|
Replace the old geared ring and hammer blade with new ones.
Replace the old grading impeller with the new one. Remove the mesh from grading impeller blades. Seal the pipeline after checking it. |
Noise and vibration have increased excessively.
|
Dynamic imbalance of the main grinding disc;
Geared ring adhesion; Bearing is damaged. Triangular belt is very loose. |
Dynamic balance should be checked and corrected.
Remove adhesion from the gear; Replace the old bearing with a new one. The triangular belt should be tightened. |
Overload of the current
|
Feeding material is too much.
There is adhesion in the grinding chamber. Materials are clogged. 8%< fat |
Decrease the speed of feeding.
Remove completely the adhesive materials. Increase the quality of the suction air properly. Moisture and fat should not exceed 8%
|
The motor cannot be turned up. | Motor is damaged.
There is a problem in the circuit. The machine may be full of materials, and the motor power is low.
|
Replace the old motor with the new one.
Solve the circuit problem (check keys and circuits). Clean the inside of the machine; adhesion should be removed if any.
|
* The pulverizer inside should be checked every day; the adhered material should be removed. The ball bearings should be greased and fully serviced every 15 days.
* Warning: All machinery should be repaired, modified, and regulated after the main power board is cut off.