1. Before installation: Gently sand away any oxides (usually black or white deposits) from the mating surface using fine sandpaper, then wipe it clean with alcohol to ensure a smooth, clean finish. Note that maintaining the flatness of the mating surface is crucial.

2. During installation: Use specialized tools and apply precise torque.

Consequences of incorrect torque: Insufficient tightening leads to unstable vibration and compromises welding quality; excessive tightening can strip threads or cause components to crack, damaging expensive transducers and boosters.

3. During operation: Perform frequent inspections and thorough cleaning.

Watch for abnormal heat: If the tool head heats up during operation, stop the machine immediately and allow it to cool naturally. If overheating recurs within 30 minutes to two hours, it may indicate an internal issue with the tool head, requiring replacement or professional inspection.

Listen for anomalies: If you hear a piercing screech or other unusual noise during welding, stop the machine immediately for inspection. Such sounds often indicate issues like looseness or cracking in the tool head, booster, or transducer; continued use could result in severe damage.

4. Periodic replacement: Based on usage intensity.

Signs requiring immediate replacement: Replace the tool head immediately—regardless of whether the scheduled replacement interval has been reached—if there is visible wear or cracking on the working face, or if welding performance becomes consistently unstable.