1. Material blockage: When the material accumulation in the organic fertilizer crusher is too much, it may cause the running speed to slow down. At this point, you can stop the machine to check and clean the material in the crushing chamber.

2. Tool wear: The tool of the organic fertilizer crusher will wear after a long time of operation, resulting in poor crushing effect, which affects the running speed. You can check the wear of the tool and replace it with a new one if necessary.

3. Motor failure: Motor failure may lead to a decrease in the operating speed of the organic fertilizer crusher. You can check whether the motor is overheating, whether the coil is short circuit, etc., find problems in time to repair or replace.

4. Transmission component failure: The transmission components of the organic fertilizer mill (such as belts, gears, etc.) fail, which may also lead to slower running speed. You can check whether the transmission parts are damaged or worn, and repair or replace them in time.

5. Voltage instability: Unstable power supply voltage may lead to fluctuations in the operating speed of the organic fertilizer grinder. Ensure that the power supply voltage is normal and contact an electrician to check if necessary.

6. Insufficient lubrication: The operation of organic fertilizer equipment requires sufficient lubricating oil, and if insufficient lubrication may lead to slower operation. You can check the lubricating oil level and replenish the lubricating oil in time.

7. Equipment aging: After a period of time, the organic fertilizer mill may experience aging, resulting in a decrease in operating speed. At this point, you can consider updating the equipment to improve the production efficiency of the organic fertilizer production line.