Things to pay attention to during maintenance of vertical colloid mill

### Maintenance of Vertical Mills

To ensure efficient operation and longevity of vertical mills, follow these maintenance steps:

1. **Inspection and Lubrication:**

- Check pipes and joints for looseness and ensure flexibility.

- Lubricate bearings with oil, maintaining the oil level at the center of the mark. Replace or replenish oil as needed.

2. **Water Injection:**

- Unscrew the water inlet plug and inject water or slurry as required.

3. **Shutdown Procedure:**

- Before stopping the mill, close the gate valve and pressure gauge, then turn off the motor.

4. **Regular Maintenance:**

- Replace lubricating oil every 100 hours during the first month of operation, then every 500 hours thereafter.

- Adjust the packing gland to maintain proper dripping in the packing chamber.

- Inspect the shaft sleeve for wear and replace if necessary.

5. **Winter Care:**

- Drain the medium after stopping in cold weather to prevent freezing and cracking.

6. **Long-Term Storage:**

- Disassemble the pump, wipe off moisture, grease rotating parts, and store properly.

7. **Operational Checks:**

- Ensure the motor rotates in the correct direction.

- Open the outlet pressure gauge and inlet vacuum pump when the mill runs normally, then gradually open the gate valve while monitoring motor load.

8. **Efficiency and Safety:**

- Operate within the flow rate and head range specified on the nameplate for optimal efficiency.

- Monitor bearing temperature, ensuring it does not exceed 35°C above ambient or 80°C maximum.

- Stop the machine immediately if abnormal sounds are detected.

Proper maintenance ensures the vertical mill operates efficiently and remains in good condition for extended use.