Using the Hypertherm SmartSYNC Hand Torch is easy. First, make sure you've got the right consumables for your job. Install them by simply twisting them on. You can adjust the power and amperage right on the handheld torch, so you don't need to keep going back to the power supply. When it's time to change consumables, it'll only take about 10 seconds. The system will automatically set itself up for the new cartridge. As for maintenance, keep the torch clean and check the consumables regularly for wear. If you notice any issues, stop using the torch and get it checked out. Also, follow the safety instructions that come with the product to avoid any accidents.