Using the ADJ EVSVAC Vacuum Tool is a breeze. First, make sure the tool is clean and in good working condition. Then, position it correctly over the ADJ EVS3 or WMS2 LED video panel module you want to remove. Press it down firmly to create a seal and activate the vacuum. When the module is removed, handle it gently. As for maintenance, keep the tool clean after each use. You can use a soft, dry cloth to wipe it. Avoid using harsh chemicals as they might damage the tool. Also, store it in a dry place to prevent any moisture - related issues. And always remember that the ADJ EVS3 and WMS2 LED video panel modules are purchased separately.