1. Uneven feeding: insufficient feeding amount or too thick material layer may lead to reduced production capacity, should check and adjust the feeding amount to ensure that the material layer is moderate.

2. Neglect equipment maintenance: regular inspection and maintenance of organic fertilizer equipment, such as bearing lubrication, replacement of wearing parts, etc., to prevent equipment failure and extend service life.

3. Improper operation: Ensure that the operators receive proper training and understand the correct operation methods of the equipment to avoid equipment damage caused by improper operation.

4. Equipment overload operation: Avoid equipment overload operation for a long time to reduce equipment fatigue and aging.

5. Do not check the device status: Before starting the device, check the device status to ensure that all components are working properly.

6. Ignoring safety operation procedures: comply with safety operation procedures, such as wearing appropriate protective equipment, to avoid entering dangerous areas when the equipment is running.

7. No no-load test: Before the formal production, no-load test should be carried out to check whether the steering of the equipment is correct and whether the gear noise is uniform.

8. Unclean equipment: Regularly clean the equipment, especially the inside of the screen and cylinder, to prevent material blockage and equipment corrosion.

9. Not following the operation manual: Strictly follow the operation manual of the device to avoid damage to the device caused by violation of the operation rules.

By avoiding these common errors, you can ensure the effective operation of the drum granulator and improve production efficiency and product quality.