Page 2 - Northern Industrial Welding; Operating Instructions and Parts Manual; Welding; Unpacking
Please read and save these instructions. Read through this owner’s manual carefully before using product. Protect yourself and others by observing all safety information, warnings, and cautions. Failure to comply with instructions could result in personal injury and/or damage to product or property....
Page 3 - Specifications and Dimension; MODEL; Ground Cab; Thermal Indic
Northern Industrial Welding 2 Operating Instructions and Parts Manual ST80i Specifications and Dimension MODEL ST80i Power supply (v) 1ph-120V-60HZ No-load voltage (v) 75V Output Range (A) 20-75A 90A Peak Duty cycle (%) 20% @75A Suggested electrode E6013,E7014,E7018, Stainless steel Electrode Diamet...
Page 4 - Welding Cable and Electrode Holder
Northern Industrial Welding 3 Operating Instructions and Parts Manual ST80i Welding Cable and Electrode Holder One end of cable is connected to output connectors of the machine. The electrode is clamped in the electrode holder for welding. Output “-” Connector This is the connector for grounding cab...
Page 5 - General Safety Information; Your Welding Environment
Northern Industrial Welding 4 Operating Instructions and Parts Manual ST80i General Safety Information 1.1 Your Welding Environment -Keep the environment you will be welding in free from flammable materials. -Always keep a fire extinguisher accessible to your welding environment. -Always have a qual...
Page 6 - Fumes and Gases
Northern Industrial Welding 5 Operating Instructions and Parts Manual ST80i connections are a hazard, so secure the ground lead before welding. -Wear dry protective apparel: coat, shirt, gloves and insulated footwear. -Insulate yourself from the work piece. Avoid contacting the work piece or ground....
Page 7 - Hot Materials
Northern Industrial Welding 6 Operating Instructions and Parts Manual ST80i explosive materials. -Do not operate any electric arc welder in areas where flammable or explosive materials are present. -Remove all flammable materials within 35 feet of the welding arc. If removal is not possible, tightly...
Page 8 - Assembly; Power requirement
Northern Industrial Welding 7 Operating Instructions and Parts Manual ST80i -Always have power disconnected when working on internal components. - Do not touch or handle PC board without being properly grounded with a wrist strap. Put PC board in static proof bag to move or ship. -Do not put hands o...
Page 9 - Ground clamp connection
Northern Industrial Welding 8 Operating Instructions and Parts Manual ST80i 4. Ground clamp connection Clear any dirt, rust, scale, oil or paint on the ground clamp. Make certain you have a good solid ground connection. A poor connection at the ground clamp will waste power and heat. Make sure the g...
Page 10 - Operation; Setting the amperage control
Northern Industrial Welding 9 Operating Instructions and Parts Manual ST80i c. The bead will be flat and porous d. Rod may be freeze or stick to work piece Note: Rate of travel over the work also affects the weld. To ensure proper penetration and enough deposit of rod, the arc must be moved slowly a...
Page 11 - Formed by
Northern Industrial Welding 10 Operating Instructions and Parts Manual ST80i A good arc is accompanied by a crisp, cracking sound. The sound is similar to that made by eggs frying. To lay a weld bead, only 2 movements are required; downward and in the direction the wel d is to be laid, as in followi...
Page 12 - Maintenance; Store in a clean dry
Northern Industrial Welding 11 Operating Instructions and Parts Manual ST80i A. Weld speed is too fast. B. Weld speed is too slow. C. Arc is too long. D. Ideal weld. A solid weld bead requires that the electrode be moved slowly and steadily along the weld seam. Moving the electrode rapidly or errati...
Page 13 - Trouble shooting Chart
Northern Industrial Welding 12 Operating Instructions and Parts Manual ST80i Trouble shooting Chart No. Breakdown Analysis Solutions Poor ventilation leads to over-heat protection Improve ventilation Internal temperature is too high Will automatically recover when the temperature lowers. 1 Yellow In...
Page 15 - Warranty; LIMITED ONE-YEAR WARRANTY; Repair Parts List; Reference
Northern Industrial Welding 14 Operating Instructions and Parts Manual ST80i Warranty LIMITED ONE-YEAR WARRANTY Should this product fail to perform satisfactorily due to a defect or poor workmanship within ONE YEAR from the date of purchase, return it to the place of purchase and it will be replaced...
Page 16 - Other Safety and Standards Information; — SAFETY IN
Northern Industrial Welding 15 Operating Instructions and Parts Manual ST80i 9 Dins connector (copper) （ ROHS ） 2.07.57.147 2 10 Thermal protection Indicating light 1.2.07.02.3010 1 11 Power Indicating light 1.2.07.02.3011 1 12 Output fixed board 1.1.03.04.0137 2 13 Bottom panel 1.1.01.04.0340 1 14 ...
Page 17 - • ANSI Standard Z87.1; — SAFE PRACTICE; • NFPA Standard 51B; — CUTTING AND; • OSHA Standard 29 CFR; — Code for
Northern Industrial Welding 16 Operating Instructions and Parts Manual ST80i • ANSI Standard Z87.1 — SAFE PRACTICE FOR OCCUPATION AND EDUCATIONAL EYE AND FACE PROTECTION Obtainable from: American National Standards Institute (ANSI) 11 West 42nd St. New York, NY 10036 Tel. (212) 642-4900 Fax (212) 39...
