Warning: Before using, please be sure to read and understand all safety rules and instructions in this manual before operating the heating . 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. Operation: 1. To prolong your heating 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 the heating 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. Specification: Model 110V Input voltage 110V 50/60Hz Input current 7A Output power 500-900W Output voltage 45V Output current 180A Packing HBR Main*1 Flexible Soft Coil*1.1m 18mm coil(diameter of bore)*1 22mm coil(diameter of bore)*1 28mm coil(diameter of bore)*1 screw * 2 Manual * 1