Warning:Before using, please be sure to read and understand all safety rules and instructions in this manual before operating. Pay particular attention to the safety rules. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious personal injury.Specification:Input voltage 110V 50/60HzInput current 7AOutput power 500-900WOutput voltage 45VOutput current 180AOperation1. To prolong your it, leaving an 10mm air gap between the coil and the work piece is recommended as the insulation of the coil will eventually burn through if held directly to hot material.2. Choose the appropriately sized coil to give the closest fit to the work piece.3. Insert both ends of the coil into the coil location socket and tighten the thumb screws securely.4. Activate the power switch to run it for 1-3 minutes until enough heat has been applied to the work piece to break the rust/corrosion bond.5. Release the power switch to turn off the power.6. Do not use portable generators. The unstable voltage will damage the unit and void the warranty.7. Turn unit off and allow the unit and all attachments to cool for at least 20 minutes. Handling the unit or parts before they have cooled may result in injury.8. Make sure the unit is turned off and unplugged. After cool enough, use a dry, clean, non-abrasive cloth or paper towel to remove grease, oil, and other dirt from it and electrical lead before returning them to the storage case. Storage of unit while still hot may result in damage to equipment or pose a fire hazard.Packing List:HBR Main*1Flexible Soft Coil*1.1m18mm coil(diameter of bore)*1（Length 20cm)22mm coil(diameter of bore)*1（Length 20cm)28mm coil(diameter of bore)*1（Length 20cm)screw * 2Manual * 1