Installation steps:
1. Prepare tools: vacuum hose, wrench, pliers.

2. Confirm whether the material and size of the vacuum hose match the engraving machine.

3. Find the vacuum port and insert the hose connector into the vacuum port.

4. Fix the hose connector with pliers or a wrench and make sure it is firmly tightened.

Precautions:
1. Make sure the material and size of the vacuum hose match the requirements of the engraving machine. If the wrong hose is used, it may cause poor vacuuming or unstable machine operation.

2. Carefully check whether the hose connection is firm during installation. If the connection is not tight, the vacuuming effect may be affected.

3. Note that before each use, check whether the hose is firmly connected to ensure that the vacuuming function of the engraving machine is normal.

4. Clean the hose regularly to keep the vacuuming unobstructed and extend the service life of the engraving machine.