What are the key safety warnings I should know before using the machine?

Never immerse the machine, power cable, or plug in water, and never touch the plug with wet hands — there is a risk of electric shock. Keep the machine away from children at all times, and never operate it outdoors or leave it unattended. Additionally, only use fresh cold tap or drinking water in the tank — never carbonated mineral water or other liquids — and do not place the machine on or near hot surfaces such as a stove or heater.