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Northern Industrial Welding Operating Instructions and Parts Manual ST80i 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. Please retain instructions for future reference.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual Specifications and Dimension MODEL Power supply (v) No-load voltage (v) Output Range (A) Duty cycle (%) Suggested electrode Electrode Diameter (Inch) Dimensions Length x Width x Height Weight (Ibs) Know your Welder ST80i 1ph-120V-60HZ 75V 20-75A 90A Peak 20% @75A E6013,E7014,E7018, Stainless steel 1/16”, 5/64”, 3/32”（1.6mm，2.0mm，2.4mm） 300x120x240MM / 12x5x9 inches 4.5Kgs 9.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual 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 cable when STICK welding. When this machine is used for TIG welding, this connector is for the TIG torch Power Cord The power cord connects the welder to the 110-120v volt power supply.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual 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 qualified person install and operate this equipment. -Make sure the area is clean, dry and ventilated. Do not operate the welder in humid, wet or poorly ventilated areas.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual 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. - Do not attempt to repair or maintain the welder while the power is on. -Inspect all cables and cords for any exposed wire and replace immediately. -Use recommended replacement cables and cords.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual 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 cover them with fireproof covers. -Take precautions to ensure that flying sparks do not cause fires or explosions in hidden areas, cracks or areas you cannot see.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual -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 or fingers near moving parts such as fan. Assembly extension cord it must be a #12 gauge cord at the smallest. -Do not use an extension cord over 25 ft. in length. 3. Setting up the work piece 3.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual Used for out of position and tacking. 6. Selecting the proper electrode There is no golden rule that determine the exact rod or heat setting required for every situation. The type and thickness of metal and the position of the work piece determine the electrode type and the amount of heat needed in the welding process. Heavier and thicker metals required more amperage.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual c. d. The bead will be flat and porous 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 and evenly along the weld seam. necessary to hold the electrode perpendicular to the work piece.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual Flat position is the easiest of the welding positions and is most commonly used. It is best if you can weld in the flat position if at all possible as good results are easier to achieve. A good arc is accompanied by a crisp, cracking sound. The sound is similar to that made by eggs frying.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual and other exposed parts of the body with protective garments, or if possible, work with a shield between the body and the work piece. The intense heat produced at the arc sets up strains in the metal joined by welding. Peening the weld not only removes the scale left behind in the welding but relieves the internal strains developed by the heating and cooling process. With the hammer/brush after it is cooled. A.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual Trouble shooting Chart No. Breakdown Analysis Poor ventilation leads to over-heat protection Yellow 1 Indicator is on Internal temperature is too high Solutions Improve ventilation Will automatically recover when the temperature lowers. Using over the rated Will automatically recover duty-cycle when the temperature lowers.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual Electrode Holder and Cable Electrode Holder’s capacity is too small; Replace with a higher Amperage Holder Cable is of small size Replace it with another one in conformity with the requirement getting 5 hot;“+” “-” polar sockets becoming Socket loosen High resistance between the electrode holder and the cable Remove the oxide coating and tighten it Resume power over a long period of time (more than two days) Not a failure
Northern Industrial Welding ST80i Operating Instructions and Parts Manual 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, free of charge. Incidental or consequential damages are excluded from this warranty. Repair Parts List Reference number Description Part number Qty 1 Handle 2.05.08.118 1 2 Enclosure 1.1.01.01.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual 9 10 Dins connector (copper)（ROHS） Thermal protection Indicating light 2.07.57.147 2 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 Temperature relay 1.2.07.02.3008 1 1.1.05.03.0025 1 2.07.25.819 1 1.1.02.01.0750 1 1.2.07.02.
Northern Industrial Welding ST80i Operating Instructions and Parts Manual • 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) 398-0023 www.ansi.org • NFPA Standard 51B — CUTTING AND WELDING PROCESS obtainable from: National Fire Protection Association, 1 Batterymarch Park, P.O. Box 9101 Quincy, MA 02269-9101 Tel.
