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OM-253 918D Processes Multiprocess Welding Description MPi 220P CE File: Multiprocess Visit our website at www.MillerWelds.com 2013−01 From Miller to You Thank you and congratulations on choosing Miller. Now you can get the job done and get it done right. We know you don’t have time to do it any other way. That’s why when Niels Miller first started building arc welders in 1929, he made sure his products offered long-lasting value and superior quality. Like you, his customers couldn’t afford anything less. Miller products had to be more than the best they could be. They had to be the best you could buy. Today, the people that build and sell Miller products continue the tradition. They’re just as committed to providing equipment and service that meets the high standards of quality and value established in 1929. This Owner’s Manual is designed to help you get the most out of your Miller products. Please take time to read the Safety precautions. They will help you protect yourself against potential hazards on the worksite. We’ve made installation and operation quick and easy. With Miller you can count on years of reliable service with proper maintenance. And if for some reason the unit needs repair, there’s a Troubleshooting section that will help you figure out what the problem is. The parts list will then help you to decide which exact part you may need to fix the problem. Warranty and service information for your particular model are also provided. Miller Electric manufactures a full line of welders and welding related equipment. For information on other quality Miller products, contact your local Miller distributor to receive the latest full line catalog or individual catalog sheets. Working as hard as you do − every power source from Miller is backed by the most hassle-free warranty in the business. TABLE OF CONTENTS SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1. Symbol Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2. Arc Welding Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3. Additional Symbols For Installation, Operation, And Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4. California Proposition 65 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5. Principal Safety Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6. EMF Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 2 − DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1. Manufacturer’s Warning Label Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2. Miscellaneous Symbols And Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 3 − SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1. Important Information Regarding CE Products (Sold Within The EU) . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3. IP Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4. Duty Cycle And Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5. Volt-Ampere Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 4 − INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1. Serial Number And Rating Label Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2. Selecting A Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3. Installing Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4. Weld Output Terminals And Selecting Cable Sizes* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5. Process/Polarity Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6. Changing Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7. Installing Wire Spool And Adjusting Hub Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8. Changing Drive Rolls And Wire Inlet Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9. Aligning Drive Rolls and Wire Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10. Electrical Service Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11. Connecting 1-Phase 230 VAC Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12. Threading Welding Wire And Adjusting Pressure Roll Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 5 − OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1. Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2. Preparing Unit For Stick Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3. Preparing Unit For TIG Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4. 2T − 4T Trigger Mode Selection (TIG Process) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5. Preparing Unit For Manual MIG (GMAW And FCAW) Welding Process . . . . . . . . . . . . . . . . . . . . . . . . 5-6. Manual MIG Welding Set-Up Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7. Trigger Mode And Spot Time Selection (MIG Process) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8. Preparing Unit For Synergic MIG (GMAW And FCAW) Welding Process . . . . . . . . . . . . . . . . . . . . . . . 5-9. Synergic MIG Welding Set-Up Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10. Preparing Unit For Synergic Pulsed MIG (GMAW And FCAW) Welding Process . . . . . . . . . . . . . . . . 5-11. Synergic Pulsed MIG Welding Set-Up Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12. 4T Trigger Set-Up Menu (Synergic Pulsed MIG Welding Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13. Welding Wire Loading Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14. Resetting Unit To Factory Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15. Loading A Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16. Operator Point MIG Parameters Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17. Rated Supply Current I1 = 16 Amps Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18. Basic Set-Up Menu Parameters Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19. Weld Parameter Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 1 3 4 4 4 5 5 7 8 8 8 8 9 10 11 11 11 12 13 13 14 15 16 17 18 19 21 22 22 23 24 25 26 27 29 30 31 33 35 36 37 38 38 39 40 41 42 TABLE OF CONTENTS SECTION 6 − MAINTENANCE & TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1. Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2. Welding Gun And Wire Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3. Unit Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 7 − ELECTRICAL DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 8 − MIG WELDING (GMAW) GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1. Typical MIG Process Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2. Typical MIG Process Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3. Holding And Positioning Welding Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4. Conditions That Affect Weld Bead Shape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5. Gun Movement During Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6. Poor Weld Bead Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7. Good Weld Bead Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8. Troubleshooting − Excessive Spatter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9. Troubleshooting − Porosity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10. Troubleshooting − Excessive Penetration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11. Troubleshooting − Lack Of Penetration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12. Troubleshooting − Incomplete Fusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13. Troubleshooting − Burn-Through . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14. Troubleshooting − Waviness Of Bead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15. Troubleshooting − Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16. Common MIG Shielding Gases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17. Troubleshooting Guide For Semiautomatic Welding Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 9 − STICK WELDING (SMAW) GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 10 − SELECTING AND PREPARING A TUNGSTEN FOR DC OR AC WELDINGWITH INVERTER MACHINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1. Selecting Tungsten Electrode (Wear Clean Gloves To Prevent Contamination Of Tungsten) . . . . . . 10-2. Preparing Tungsten Electrode For DC Electrode Negative (DCEN) Welding Or AC Welding With Inverter Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 11 − GUIDELINES FOR TIG WELDING (GTAW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1. Positioning The Torch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2. Torch Movement During Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3. Positioning Torch Tungsten For Various Weld Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 12 − PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WARRANTY 43 43 43 43 44 46 48 48 49 50 51 52 52 52 53 53 53 54 54 54 55 55 56 56 58 65 65 65 66 66 67 67 68 DECLARATION OF CONFORMITY for European Community (CE marked) products. ITW Welding Products Italy S.r.l Via Privata Iseo 6/E, 20098 San Giuliano M.se, (MI) Italy declares that the product(s) identified in this declaration conform to the essential requirements and provisions of the stated Council Directive(s) and Standard(s). Product/Apparatus Identification: Product Stock Number MPi 220P 230VAC 059016014 Council Directives: S 2006/95/EC Low Voltage S 2004/108/EC Electromagnetic Compatibility S 2011/65/EU Restriction of the use of certain hazardous substances in electrical and electronic equipment Standards: S IEC 60974-1 Arc Welding Equipment - Welding Power Sources: edition 3, 2005-07. S IEC 60974-5 Arc Welding Equipment – Wire Feeders: edition 2, 2007-11. S IEC 60974-10 Arc Welding Equipment - Electromagnetic Compatibility Requirements: edition 2.0, 2007-08. S EN 50445:2008 Product family standard to demonstrate compliance of equipment for resistance welding, arc welding and allied processes with the basic restrictions related to human exposure to electromagnetic fields (0Hz-300Hz) EU Signatory: January 2nd , 2013 ___________________________________________________________________________________ Massimigliano Lavarini Date of Declaration ELECTRONIC ENGINEER R&D TECH. SUPPORT 956 172 017 SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING som 2011−10 7 Protect yourself and others from injury — read, follow, and save these important safety precautions and operating instructions. 1-1. Symbol Usage DANGER! − Indicates a hazardous situation which, if not avoided, will result in death or serious injury. The possible hazards are shown in the adjoining symbols or explained in the text. Indicates a hazardous situation which, if not avoided, could result in death or serious injury. The possible hazards are shown in the adjoining symbols or explained in the text. NOTICE − Indicates statements not related to personal injury. . Indicates special instructions. This group of symbols means Warning! Watch Out! ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards. Consult symbols and related instructions below for necessary actions to avoid the hazards. 1-2. Arc Welding Hazards The symbols shown below are used throughout this manual to call attention to and identify possible hazards. When you see the symbol, watch out, and follow the related instructions to avoid the hazard. The safety information given below is only a summary of the more complete safety information found in the Safety Standards listed in Section 1-5. Read and follow all Safety Standards. Only qualified persons should install, operate, maintain, and repair this unit. During operation, keep everybody, especially children, away. D Always verify the supply ground − check and be sure that input power cord ground wire is properly connected to ground terminal in disconnect box or that cord plug is connected to a properly grounded receptacle outlet. D When making input connections, attach proper grounding conductor first − double-check connections. D Keep cords dry, free of oil and grease, and protected from hot metal and sparks. D Frequently inspect input power cord for damage or bare wiring − replace cord immediately if damaged − bare wiring can kill. D Turn off all equipment when not in use. D Do not use worn, damaged, undersized, or poorly spliced cables. ELECTRIC SHOCK can kill. Touching live electrical parts can cause fatal shocks or severe burns. The electrode and work circuit is electrically live whenever the output is on. The input power circuit and machine internal circuits are also live when power is on. In semiautomatic or automatic wire welding, the wire, wire reel, drive roll housing, and all metal parts touching the welding wire are electrically live. Incorrectly installed or improperly grounded equipment is a hazard. D Do not touch live electrical parts. D Wear dry, hole-free insulating gloves and body protection. D Insulate yourself from work and ground using dry insulating mats or covers big enough to prevent any physical contact with the work or ground. D Do not use AC output in damp areas, if movement is confined, or if there is a danger of falling. D Use AC output ONLY if required for the welding process. D If AC output is required, use remote output control if present on unit. D Additional safety precautions are required when any of the following electrically hazardous conditions are present: in damp locations or while wearing wet clothing; on metal structures such as floors, gratings, or scaffolds; when in cramped positions such as sitting, kneeling, or lying; or when there is a high risk of unavoidable or accidental contact with the workpiece or ground. For these conditions, use the following equipment in order presented: 1) a semiautomatic DC constant voltage (wire) welder, 2) a DC manual (stick) welder, or 3) an AC welder with reduced open-circuit voltage. In most situations, use of a DC, constant voltage wire welder is recommended. And, do not work alone! D Disconnect input power or stop engine before installing or servicing this equipment. Lockout/tagout input power according to OSHA 29 CFR 1910.147 (see Safety Standards). D Properly install, ground, and operate this equipment according to its Owner’s Manual and national, state, and local codes. D Do not drape cables over your body. D If earth grounding of the workpiece is required, ground it directly with a separate cable. D Do not touch electrode if you are in contact with the work, ground, or another electrode from a different machine. D Do not touch electrode holders connected to two welding machines at the same time since double open-circuit voltage will be present. D Use only well-maintained equipment. Repair or replace damaged parts at once. Maintain unit according to manual. D Wear a safety harness if working above floor level. D Keep all panels and covers securely in place. D Clamp work cable with good metal-to-metal contact to workpiece or worktable as near the weld as practical. D Insulate work clamp when not connected to workpiece to prevent contact with any metal object. D Do not connect more than one electrode or work cable to any single weld output terminal. Disconnect cable for process not in use. SIGNIFICANT DC VOLTAGE exists in inverter welding power sources AFTER removal of input power. D Turn Off inverter, disconnect input power, and discharge input capacitors according to instructions in Maintenance Section before touching any parts. HOT PARTS can burn. D Do not touch hot parts bare handed. D Allow cooling period before working on equipment. D To handle hot parts, use proper tools and/or wear heavy, insulated welding gloves and clothing to prevent burns. OM-253 918 Page 1 FUMES AND GASES can be hazardous. Welding produces fumes and gases. Breathing these fumes and gases can be hazardous to your health. D Keep your head out of the fumes. Do not breathe the fumes. D If inside, ventilate the area and/or use local forced ventilation at the arc to remove welding fumes and gases. D If ventilation is poor, wear an approved air-supplied respirator. D Read and understand the Material Safety Data Sheets (MSDSs) and the manufacturer’s instructions for metals, consumables, coatings, cleaners, and degreasers. D Work in a confined space only if it is well ventilated, or while wearing an air-supplied respirator. Always have a trained watchperson nearby. Welding fumes and gases can displace air and lower the oxygen level causing injury or death. Be sure the breathing air is safe. D Do not weld in locations near degreasing, cleaning, or spraying operations. The heat and rays of the arc can react with vapors to form highly toxic and irritating gases. D Do not weld on coated metals, such as galvanized, lead, or cadmium plated steel, unless the coating is removed from the weld area, the area is well ventilated, and while wearing an air-supplied respirator. The coatings and any metals containing these elements can give off toxic fumes if welded. ARC RAYS can burn eyes and skin. Arc rays from the welding process produce intense visible and invisible (ultraviolet and infrared) rays that can burn eyes and skin. Sparks fly off from the weld. D Wear an approved welding helmet fitted with a proper shade of filter lenses to protect your face and eyes from arc rays and sparks when welding or watching (see ANSI Z49.1 and Z87.1 listed in Safety Standards). D Wear approved safety glasses with side shields under your helmet. D Use protective screens or barriers to protect others from flash, glare and sparks; warn others not to watch the arc. D Wear protective clothing made from durable, flame-resistant material (leather, heavy cotton, or wool) and foot protection. WELDING can cause fire or explosion. Welding on closed containers, such as tanks, drums, or pipes, can cause them to blow up. Sparks can fly off from the welding arc. The flying sparks, hot workpiece, and hot equipment can cause fires and burns. Accidental contact of electrode to metal objects can cause sparks, explosion, overheating, or fire. Check and be sure the area is safe before doing any welding. D Remove all flammables within 35 ft (10.7 m) of the welding arc. If this is not possible, tightly cover them with approved covers. D Do not weld where flying sparks can strike flammable material. D Protect yourself and others from flying sparks and hot metal. D Be alert that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas. D Watch for fire, and keep a fire extinguisher nearby. D Be aware that welding on a ceiling, floor, bulkhead, or partition can cause fire on the hidden side. D Do not weld on containers that have held combustibles, or on closed containers such as tanks, drums, or pipes unless they are properly prepared according to AWS F4.1 and AWS A6.0 (see Safety Standards). D Do not weld where the atmosphere may contain flammable dust, gas, or liquid vapors (such as gasoline). D Connect work cable to the work as close to the welding area as practical to prevent welding current from traveling long, possibly unknown paths and causing electric shock, sparks, and fire hazards. D Do not use welder to thaw frozen pipes. OM-253 918 Page 2 D Remove stick electrode from holder or cut off welding wire at contact tip when not in use. D Wear oil-free protective garments such as leather gloves, heavy shirt, cuffless trousers, high shoes, and a cap. D Remove any combustibles, such as a butane lighter or matches, from your person before doing any welding. D After completion of work, inspect area to ensure it is free of sparks, glowing embers, and flames. D Use only correct fuses or circuit breakers. Do not oversize or bypass them. D Follow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B for hot work and have a fire watcher and extinguisher nearby. FLYING METAL or DIRT can injure eyes. D Welding, chipping, wire brushing, and grinding cause sparks and flying metal. As welds cool, they can throw off slag. D Wear approved safety glasses with side shields even under your welding helmet. BUILDUP OF GAS can injure or kill. D Shut off compressed gas supply when not in use. D Always ventilate confined spaces or use approved air-supplied respirator. ELECTRIC AND MAGNETIC FIELDS (EMF) can affect Implanted Medical Devices. D Wearers of Pacemakers and other Implanted Medical Devices should keep away. D Implanted Medical Device wearers should consult their doctor and the device manufacturer before going near arc welding, spot welding, gouging, plasma arc cutting, or induction heating operations. NOISE can damage hearing. Noise from some processes or equipment can damage hearing. D Wear approved ear protection if noise level is high. CYLINDERS can explode if damaged. Compressed gas cylinders contain gas under high pressure. If damaged, a cylinder can explode. Since gas cylinders are normally part of the welding process, be sure to treat them carefully. D Protect compressed gas cylinders from excessive heat, mechanical shocks, physical damage, slag, open flames, sparks, and arcs. D Install cylinders in an upright position by securing to a stationary support or cylinder rack to prevent falling or tipping. D Keep cylinders away from any welding or other electrical circuits. D Never drape a welding torch over a gas cylinder. D Never allow a welding electrode to touch any cylinder. D Never weld on a pressurized cylinder − explosion will result. D Use only correct compressed gas cylinders, regulators, hoses, and fittings designed for the specific application; maintain them and associated parts in good condition. D Turn face away from valve outlet when opening cylinder valve. D Keep protective cap in place over valve except when cylinder is in use or connected for use. D Use the right equipment, correct procedures, and sufficient number of persons to lift and move cylinders. D Read and follow instructions on compressed gas cylinders, associated equipment, and Compressed Gas Association (CGA) publication P-1 listed in Safety Standards. 1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. BATTERY EXPLOSION can injure. D Do not install or place unit on, over, or near combustible surfaces. D Do not install unit near flammables. D Do not overload building wiring − be sure power supply system is properly sized, rated, and protected to handle this unit. D Do not use welder to charge batteries or jump start vehicles unless it has a battery charging feature designed for this purpose. MOVING PARTS can injure. D Keep away from moving parts such as fans. D Keep all doors, panels, covers, and guards closed and securely in place. FALLING EQUIPMENT can injure. D Use lifting eye to lift unit only, NOT running gear, gas cylinders, or any other accessories. D Use equipment of adequate capacity to lift and support unit. D If using lift forks to move unit, be sure forks are long enough to extend beyond opposite side of unit. D Keep equipment (cables and cords) away from moving vehicles when working from an aerial location. D Follow the guidelines in the Applications Manual for the Revised NIOSH Lifting Equation (Publication No. 94−110) when manually lifting heavy parts or equipment. OVERUSE can cause OVERHEATING D Allow cooling period; follow rated duty cycle. D Reduce current or reduce duty cycle before starting to weld again. D Do not block or filter airflow to unit. D Have only qualified persons remove doors, panels, covers, or guards for maintenance and troubleshooting as necessary. D Reinstall doors, panels, covers, or guards when maintenance is finished and before reconnecting input power. READ INSTRUCTIONS. D Read and follow all labels and the Owner’s Manual carefully before installing, operating, or servicing unit. Read the safety information at the beginning of the manual and in each section. D Use only genuine replacement parts from the manufacturer. D Perform maintenance and service according to the Owner’s Manuals, industry standards, and national, state, and local codes. H.F. RADIATION can cause interference. FLYING SPARKS can injure. D Wear a face shield to protect eyes and face. D Shape tungsten electrode only on grinder with proper guards in a safe location wearing proper face, hand, and body protection. D Sparks can cause fires — keep flammables away. STATIC (ESD) can damage PC boards. D D D D D Put on grounded wrist strap BEFORE handling boards or parts. D Use proper static-proof bags and boxes to store, move, or ship PC boards. ARC WELDING can cause interference. MOVING PARTS can injure. D Keep away from moving parts. D Keep away from pinch points such as drive rolls. WELDING WIRE can injure. D Do not press gun trigger until instructed to do so. D Do not point gun toward any part of the body, other people, or any metal when threading welding wire. D High-frequency (H.F.) can interfere with radio navigation, safety services, computers, and communications equipment. D Have only qualified persons familiar with electronic equipment perform this installation. The user is responsible for having a qualified electrician promptly correct any interference problem resulting from the installation. If notified by the FCC about interference, stop using the equipment at once. Have the installation regularly checked and maintained. Keep high-frequency source doors and panels tightly shut, keep spark gaps at correct setting, and use grounding and shielding to minimize the possibility of interference. D D D D D Electromagnetic energy can interfere with sensitive electronic equipment such as computers and computer-driven equipment such as robots. D Be sure all equipment in the welding area is electromagnetically compatible. To reduce possible interference, keep weld cables as short as possible, close together, and down low, such as on the floor. Locate welding operation 100 meters from any sensitive electronic equipment. Be sure this welding machine is installed and grounded according to this manual. If interference still occurs, the user must take extra measures such as moving the welding machine, using shielded cables, using line filters, or shielding the work area. OM-253 918 Page 3 1-4. California Proposition 65 Warnings Welding or cutting equipment produces fumes or gases which contain chemicals known to the State of California to cause birth defects and, in some cases, cancer. (California Health & Safety Code Section 25249.5 et seq.) This product contains chemicals, including lead, known to the state of California to cause cancer, birth defects, or other reproductive harm. Wash hands after use. 1-5. Principal Safety Standards Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1, is available as a free download from the American Welding Society at http://www.aws.org or purchased from Global Engineering Documents (phone: 1-877-413-5184, website: www.global.ihs.com). Safe Practices for the Preparation of Containers and Piping for Welding and Cutting, American Welding Society Standard AWS F4.1, from Global Engineering Documents (phone: 1-877-413-5184, website: www.global.ihs.com). Safe Practices for Welding and Cutting Containers that have Held Combustibles, American Welding Society Standard AWS A6.0, from Global Engineering Documents (phone: 1-877-413-5184, website: www.global.ihs.com). National Electrical Code, NFPA Standard 70, from National Fire Protection Association, Quincy, MA 02269 (phone: 1-800-344-3555, website: www.nfpa.org and www. sparky.org). Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, from Compressed Gas Association, 14501 George Carter Way, Suite 103, Chantilly, VA 20151 (phone: 703-788-2700, website:www.cganet.com). Safety in Welding, Cutting, and Allied Processes, CSA Standard W117.2, from Canadian Standards Association, Standards Sales, 5060 Spectrum Way, Suite 100, Ontario, Canada L4W 5NS (phone: 800-463-6727, website: www.csa-international.org). Safe Practice For Occupational And Educational Eye And Face Protection, ANSI Standard Z87.1, from American National Standards Institute, 25 West 43rd Street, New York, NY 10036 (phone: 212-642-4900, website: www.ansi.org). Standard for Fire Prevention During Welding, Cutting, and Other Hot Work, NFPA Standard 51B, from National Fire Protection Association, Quincy, MA 02269 (phone: 1-800-344-3555, website: www.nfpa.org. OSHA, Occupational Safety and Health Standards for General Industry, Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q, and Part 1926, Subpart J, from U.S. Government Printing Office, Superintendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250-7954 (phone: 1-866-512-1800) (there are 10 OSHA Regional Offices— phone for Region 5, Chicago, is 312-353-2220, website: www.osha.gov). Applications Manual for the Revised NIOSH Lifting Equation, The National Institute for Occupational Safety and Health (NIOSH), 1600 Clifton Rd, Atlanta, GA 30333 (phone: 1-800-232-4636, website: www.cdc.gov/NIOSH). 1-6. EMF Information Electric current flowing through any conductor causes localized electric and magnetic fields (EMF). Welding current creates an EMF field around the welding circuit and welding equipment. EMF fields may interfere with some medical implants, e.g. pacemakers. Protective measures for persons wearing medical implants have to be taken. For example, restrict access for passers−by or conduct individual risk assessment for welders. All welders should use the following procedures in order to minimize exposure to EMF fields from the welding circuit: 1. Keep cables close together by twisting or taping them, or using a cable cover. 2. Do not place your body between welding cables. Arrange cables to one side and away from the operator. 3. Do not coil or drape cables around your body. OM-253 918 Page 4 4. Keep head and trunk as far away from the equipment in the welding circuit as possible. 5. Connect work clamp to workpiece as close to the weld as possible. 6. Do not work next to, sit or lean on the welding power source. 7. Do not weld whilst carrying the welding power source or wire feeder. About Implanted Medical Devices: Implanted Medical Device wearers should consult their doctor and the device manufacturer before performing or going near arc welding, spot welding, gouging, plasma arc cutting, or induction heating operations. If cleared by your doctor, then following the above procedures is recommended. SECTION 2 − DEFINITIONS 2-1. Manufacturer’s Warning Label Definitions Warning! Watch Out! There are possible hazards as shown by the symbols. Safe1 2012−05 Wear dry insulating gloves. Do not touch electrode with bare hand. Do not wear wet or damaged gloves. Safe2 2012−05 Protect yourself from electric shock by insulating yourself from work and ground. Safe3 2012−05 Keep your head out of the fumes. Safe6 2012−05 Use forced ventilation or local exhaust to remove the fumes. Safe8 2012−05 Use ventilating fan to remove fumes. Safe10 2012−05 Keep flammables away from welding. Do not weld near flammables. Safe12 2012−05 Welding sparks can cause fires. Have a fire extinguisher nearby, and have a watchperson ready to use it. Safe14 2012−05 Do not weld on drums or any closed containers. Safe16 2012−05 Do not remove or paint over (cover) the label. Safe20 2012−05 OM-253 918 Page 5 Disconnect input plug or power before working on machine. Safe5 2012−05 Do not discard product with general waste. Reuse or recycle Waste Electrical and Electronic Equipment (WEEE) by disposing at a designated collection facility. Contact your local recycling office or your local distributor for further information. Safe37 2012−05 Disconnect input plug or power before working on machine. Safe30 2012−05 Become trained and read the instructions and labels before working on machine. Safe35 2012−05 ? ? V A Consult rating label for input power requirements. Safe34 2012−05 Drive rolls can injure fingers. Safe32 2012−05 Welding wire and drive parts are at welding voltage during operation − keep hands and metal objects away. Safe33 2012−05 Wear hat and safety glasses. Use ear protection and button shirt collar. Use welding helmet with correct shade of filter. Wear complete body protection. Safe38 2012−05 Become trained and read the instructions before working on the machine or welding. Safe40 2012−05 3 OM-253 918 Page 6 1 Move jumper links as shown on inside label to match input voltage at job site. Include extra length in grounding conductor and connect grounding conductor first. Connect line input conductors as shown on inside label. Double-check all connections, jumper link positions, and input voltage before applying power. Safe49 2012−05 2-2. Miscellaneous Symbols And Definitions A U1 I2 IP V Volts Alternating Current (AC) Direct Current (DC) Remote On Off Protective Earth (Ground) Line Connection Single Phase Static Frequency ConverterTransformerRectifier Single Phase Gas Metal Arc Welding (GMAW) Amperes I1max Rated Maximum Supply Current Rated Welding Current X Duty Cycle Percent Degree Of Protection Fuse Two-Step Trigger Operation Four-Step Trigger Operation Gas Input Gas Output Voltage Input Wire Feed Hertz Input Program Read Operator’s Manual Wire Burnback Control Diameter Increase/Decrease Variable Inductance Hz I1eff U2 Primary Voltage Maximum Effective Supply Current U0 Conventional Load Voltage Rated No Load Voltage (Average) Notes OM-253 918 Page 7 SECTION 3 − SPECIFICATIONS 3-1. Important Information Regarding CE Products (Sold Within The EU) A. Information On Electromagnetic Fields (EMF) ! This equipment shall not be used by the general public as the EMF limits for the general public might be exceeded during welding. This equipment is built in accordance with EN 60974−1 and is intended to be used only in an occupational environment (where the general public access is prohibited or regulated in such a way as to be similar to occupational use) by an expert or an instructed person. Wire feeders and ancillary equipment (such as torches, liquid cooling systems and arc striking and stabilizing devices) as part of the welding circuit may not be a major contributor to the EMF. See the Owner’s Manuals for all components of the welding circuit for additional EMF exposure information. S S The EMF assessment on this equipment was conducted at 0.5 meter. At a distance of 1 meter the EMF exposure values were less than 20% of the permissible values. ce-emf 1 2010-10 B. Information On Electromagnetic Compatibility (EMC) ! This Class A equipment is not intended for use in residential locations where the electrical power is provided by the public low voltage supply system. There can be potential difficulties in ensuring electromagnetic compatibility in those locations, due to conducted as well as radiated disturbances. ! This equipment does not comply with IEC 61000−3−12. If it is connected to a public low voltage system, it is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment can be connected. ce-emc 2 2011-09 3-2. Specifications Model MPi 220P Input Power Single Phase AC 50/60 Hz Voltage 100% 60% 35% 230 Volts MIG 110 A 17.5 V 140 A 21.0 V 180 A 23.0 V 35 V 20 - 200 A 15.0 - 24.0 V 230 Volts TIG 100 A 14.0 V 130 A 15.2 V 180 A 17.2 V 65 V 5 - 200 A 10.0 - 18.0 V 230 Volts STICK 100 A 24.0 V 130 A 25.2 V 170 A 26.8 V 65 V 5 - 200 A 20.2 - 28.0 V Rated Output Max. Open Circuit Voltage Amperage/Vo ltage Range DC Dimension (mm) L = 548 W = 237 H = 365 3-3. IP Rating IP Rating Operating Temperature Range IP22S This equipment is designed for indoor use and is not intended to be used or stored outside. OM-253 918 Page 8 14 to 104°F (−10 to 40°C) Weight (kg) 16 3-4. Duty Cycle And Overheating Duty Cycle is percentage of 10 minutes that unit can weld at rated load without overheating. If unit overheats, thermostat(s) opens, output stops, and cooling fan runs. Wait fifteen minutes for unit to cool. Reduce amperage or duty cycle before welding. 250 NOTICE − Exceeding duty cycle can damage unit or gun and void warranty. 200 175 150 100 50 % DUTY CYCLE 60% Duty Cycle At 140 Amperes 6 Minutes Welding 100% Duty Cycle At 110 Amperes 4 Minutes Resting Continuous Welding Overheating A or V 0 15 Minutes OR Reduce Duty Cycle sduty1 5/95 OM-253 918 Page 9 3-5. Volt-Ampere Curves The volt-ampere curves show the minimum and maximum voltage and amperage output capabilities of the welding power source. Curves of other settings fall between the curves shown. A. MIG 70 65 60 55 50 DC Volts 45 40 35 30 25 20 15 10 5 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 DC Amperes B. TIG/Stick 70 65 60 55 50 DC Volts 45 40 35 30 25 20 15 10 5 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 DC Amperes OM-253 918 Page 10 SECTION 4 − INSTALLATION 4-1. Serial Number And Rating Label Location The serial number and rating information for this product is located on the bottom . Use rating label to determine input power requirements and/or rated output. For future reference, write serial number in space provided on back cover of this manual. Operating Temperature Range: 14° F (−10° C) to 104° F (40° C). Ratings were developed at an ambient temperature of 20° C to 25° C. 4-2. Selecting A Location ! Do not move or operate unit where it could tip. 1 Line Disconnect Device Locate unit near correct input power supply. Airflow Distance Requirements ! Special installation may be required where gasoline or volatile liquids are present − see NEC Article 511 or CEC Section 20. 1 460 mm (18 in.) 460 mm (18 in.) Ref. 800 402-A / 956142881_4-A OM-253 918 Page 11 4-3. Installing Gas Supply Obtain gas cylinder and chain to running gear, wall, or other stationary support so cylinder cannot fall and break off valve. 1 1 Cap 2 Cylinder Valve 2 Remove cap, stand to side of valve, and open valve slightly. Gas flow blows dust and dirt from valve. Close valve. 3 4 3 Cylinder 4 Regulator/Flowmeter Install so face is vertical. Argon Gas Or Mixed Gas OR 1 5 7 2 3 8 9 CO2 Gas 5 Regulator/Flowmeter Gas Hose Connection 6 Welding Power Source Gas Hose Connection Connect supplied gas hose between regulator/flowmeter gas hose connection, and fitting on rear of welding power source. 7 Flow Adjust Typical flow rate is between 12-15 liters per minute. Check wire manufacturer’s recommended flow rate. 8 9 CO2 Adapter (Customer Supplied) O-Ring (Customer Supplied) Install adapter with O-ring between regulator/flowmeter and CO2 cylinder. 6 Rear Panel Ref. 149 827-B / Ref. 956142881_1-B OM-253 918 Page 12 4-4. Weld Output Terminals And Selecting Cable Sizes* NOTICE − The Total Cable Length in Weld Circuit (see table below) is the combined length of both weld cables. For example, if the power source is 30 m (100 ft) from the workpiece, the total cable length in the weld circuit is 60 m (2 cables x 30 m). Use the 60 m (200 ft) column to determine cable size. Weld Cable Size** and Total Cable (Copper) Length in Weld Circuit Not Exceeding*** Weld Output Terminals ! Turn off power before connecting to weld output terminals. ! Do not use worn, damaged, undersized, or poorly spliced cables. 30 m (100 ft) or Less Positive (+) 60 m (200 ft) 70 m (250 ft) 90 m (300 ft) 105 m (350 ft) 120 m (400 ft) 10 − 60% Duty Cycle 60 − 100% Duty Cycle mm2 (AWG) mm2 (AWG) 100 20 (4) 20 (4) 20 (4) 30 (3) 35 (2) 50 (1) 60 (1/0) 60 (1/0) 150 30 (3) 30 (3) 35 (2) 50 (1) 60 (1/0) 70 (2/0) 95 (3/0) 95 (3/0) 200 30 (3) 35 (2) 50 (1) 60 (1/0) 70 (2/0) 95 (3/0) 120 (4/0) 120 (4/0) 250 35 (2) 50 (1) 60 (1/0) 70 (2/0) 95 (3/0) 120 (4/0) 2x70 (2x2/0) 2x70 (2x2/0) Welding Amperes Negative (−) 45 m (150 ft) 10 − 100% Duty Cycle mm2 (AWG) Ref. 956142881_-A * This chart is a general guideline and may not suit all applications. If cable overheats, use next size larger cable. **Weld cable size is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere. ***For distances longer than those shown in this guide, call a factory applications representative. Milan Ref. S-0007-J 2011−07 4-5. Process/Polarity Table Process Polarity Cable Connections Cable To Gun Cable To Work GMAW Solid wire with shielding gas DCEP Reverse polarity Connect to positive (+) output terminal Connect to negative (−) output terminal FCAW Self-shielding wire and no shielding gas DCEN Straight polarity Connect to negative (−) output terminal Connect to positive (+) output terminal OM-253 918 Page 13 4-6. Changing Polarity 1 Lead Connections For Direct Current Electrode Positive (DCEP) 2 Lead Connections For Direct Current Electrode Negative (DCEN) Always read and follow wire manufacturer’s recommended polarity and see Section 4-5. 956142881_2-A OM-253 918 Page 14 4-7. Installing Wire Spool And Adjusting Hub Tension 1 Wire Spool 5 kg 2 Handwheel Allows adjustment of hub tension. Turn handwheel clockwise to increase tension. 3 Spool Holder Cap Tighten to secure wire spool. 1 3 2 Tools Needed: 956142881_20-B OM-253 918 Page 15 4-8. Changing Drive Rolls And Wire Inlet Guide 1 Setscrew 2 Inlet Wire Guide Loosen setscrew. Slide tip of guide as close to drive rolls as possible without touching. Tighten setscrew. 3 Drive Roll The drive roll consists of two different sized grooves. The stamped markings on the end surface of the drive roll refers to the groove on the opposite side of the drive roll. The groove closest to the motor shaft is the proper groove to thread welding wire. 4 Drive Roll Securing Cap Turn cap clockwise to secure drive roll. 1 2 4 3 Tools Needed: 2.5 mm 956142881_19-A OM-253 918 Page 16 4-9. Aligning Drive Rolls and Wire Guide ! 3 1 Correct Incorrect 4 2 5 Turn off and disconnect input power View is from top of drive rolls looking down with pressure assembly open. 1 2 3 4 5 Drive Roll Securing Nut Drive Roll Wire Guide Welding Wire Drive Gear Insert screwdriver, and turn screw in or out until drive roll groove lines up with wire guide. Close pressure roll assembly. Tools Needed: 2.5 mm Ref. 800 412-A Notes Work like a Pro! Pros weld and cut safely. Read the safety rules at the beginning of this manual. OM-253 918 Page 17 4-10. Electrical Service Guide Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These recommendations are for a dedicated branch circuit sized for the rated output and duty cycle of the welding power source. 50/60 Hz Single Phase 230 Input Voltage (V) 37 Input Amperes (A) At Rated Output Max Recommended Standard Fuse Rating In Amperes1 Time-Delay Fuses2 45 3 60 Normal Operating Fuses Min Input Conductor Size In AWG 4 6 (10) 29 (95) Max Recommended Input Conductor Length In Meters (Feet) Min Grounding Conductor Size In AWG 4 6 (10) Reference: 2011 National Electrical Code (NEC) (including article 630) 1 If a circuit breaker is used in place of a fuse, choose a circuit breaker with time-current curves comparable to the recommended fuse. 2 “Time-Delay” fuses are UL class “RK5” . See UL 248. 3 “Normal Operating” (general purpose - no intentional delay) fuses are UL class “K5” (up to and including 60 amps), and UL class “H” ( 65 amps and above). 4 Conductor data in this section specifies conductor size (excluding flexible cord or cable) between the panelboard and the equipment per NEC Table 310.15(B)(16). If a flexible cord or cable is used, minimum conductor size may increase. See NEC Table 400.5(A) for flexible cord and cable requirements. Notes OM-253 918 Page 18 4-11. Connecting 1-Phase 230 VAC Input Power 1 3 =GND/PE Earth Ground 7 2 4 L1 L2 5 6 1 Tools Needed: input4 2012−05 − Ref. 803 766-C / 956142881_5-A OM-253 918 Page 19 4-11. Connecting 1-Phase 230 VAC Input Power (Continued) ! Installation must meet all National and Local Codes − have only qualified persons make this installation. See rating label on unit and check input voltage available at site. 1 Input Power Cord ! Disconnect and lockout/tagout input power before connecting input conductors from unit. Follow established procedures regarding the installation and removal of lockout/tagout devices. 2 Disconnect Device (switch shown in the OFF position) 3 Disconnect Device Grounding Terminal 4 Disconnect Device Line Terminals 5 Black And White Input Conductor (L1 And L2) 6 Green Or Green/Yellow Grounding Conductor ! Always connect green or green/yellow conductor to supply grounding terminal first, and never to a line terminal. Connect green or green/yellow grounding conductor to disconnect device grounding terminal first. Connect input conductors L1 and L2 to disconnect device line terminals. 7 Over-Current Protection Select type and size of over-current protection using Section 4-10 (fused disconnect switch shown). Close and secure door on disconnect device. Follow established lockout/tagout procedures to put unit in service. input4 2012−05 − 803 766-C Notes Work like a Pro! Pros weld and cut safely. Read the safety rules at the beginning of this manual. OM-253 918 Page 20 4-12. Threading Welding Wire And Adjusting Pressure Roll Tension 1 2 3 4 5 6 7 Wire Spool Welding Wire Inlet Wire Guide Pressure Adjustment Knob Drive Roll Outlet Wire Guide Gun Conduit Cable Lay gun cable out straight. 3 4 7 Tools Needed: 1 2 5 6 . Hold wire tightly to keep it from unraveling. 150 mm (6 in.) Open pressure assembly. Pull and hold wire; cut off end. . Use pressure indicator Tighten scale to set a desired drive roll pressure. 1 2 3 4 Close and tighten pressure assembly, and let go of wire. Push wire thru guides into gun; continue to hold wire. Pressure Indicator Scale Remove gun nozzle and contact tip. Tighten WOOD Press gun trigger until wire comes out of gun. Reinstall contact tip and nozzle 1 2 3 4 Feed wire to check drive roll pressure. Tighten knob enough to prevent slipping. Cut off wire. Close and latch door. Ref. 956142881_3-A OM-253 918 Page 21 SECTION 5 − OPERATION 5-1. Controls 1 Power Switch S1 Use switch to turn power on and off. 2 Wire Speed/Set-Up Adjustment Control Use control to adjust wire speed and change values while in the set-up mode. 4 3 5 3 7 2 Use control to adjust welding amperage while in TIG and STICK mode (see Section 5-2 or 5-3) or workpiece thickness while in MIG mode (see Section 5-5). 4 Digital Display Meter Displays values and parameters for selected welding process. 5 6 Amperage/Workpiece Thickness Adjustment Control Process Selector Switch Use switch to select process, TIG, STICK or MIG. 6 Program/Sequencer Switch Use switch to select programs and scroll through sequencer parameters while in MIG mode (see Section 5-5). 7 8 Sequencer Selector Switch Use switch to scroll through sequencer parameter while in MIG mode. 8 MIG Torch Connection Connection for Euro style MIG gun. 9 9 10 11 Negative Weld Output Receptacle For Stick and MIG welding, connect work cable to this receptacle. For TIG welding, connect torch to this receptacle. 10 Gun Trigger Receptacle 11 Positive Weld Output Receptacle 1 For Stick welding, connect electrode cable to this receptacle. For TIG welding, connect work cable to this receptacle. 956142881_6-B OM-253 918 Page 22 5-2. Preparing Unit For Stick Welding 1 2 3 8 4 5 9 6 7 10 11 8 9 10 11 12 13 Positive Weld Output Terminal Gun Trigger Receptacle Negative Weld Output Terminal Hot Start Adjustment Knob Amperage Adjustment Control Knob Digital Meter Display Process Selector P1 Push Button Welding Amperage Welding Voltage Stick Welding Symbol Set Amperage (Output On) Hot Start Adjustment Switch Sequencer Set-Up P2 Push Button Prepare unit for Stick welding as follows: Press And Release P1 Press And Release P2 Press And Release P2 6 Connect electrode holder to positive weld output receptacle. Connect work clamp to negative weld output terminal. Turn power on. Allow time for unit to complete it start up cycle. 5 7 4 12 Press and release Process selector P1 push button to select Stick welding. Corresponding symbol is displayed. . While in Stick mode, the output 13 is set to off. Output is turned on/ off by pressing and releasing Sequencer set-up P2 push button. When output is turned on, use amperage adjustment knob to set desired amperage value. Rotate knob clockwise to increase amperage (min - max). Hot Start Setting 1 Use Hot Start to increase output amperage at the start of a weld to help prevent electrode sticking. To change Hot Start setting, proceed as follows: 3 2 Use the Amperage Adjustment control knob or switch to change amperage from 0 to 50 percent of the preset amperage value, with 20 percent being the default value, The maximum Hot Start amperage value is 250 amperes. Example: if preset amperage is 90 amperes, 0% = 90 amperes, 50% = 135 amperes. Ref. 956142881_7-B OM-253 918 Page 23 5-3. Preparing Unit For TIG Welding 1 2 3 8 Positive Weld Output Terminal Gun Trigger Receptacle Negative Weld Output Terminal 4 Hot Start Adjustment Knob 5 Amperage Adjustment Control Knob 6 Digital Meter Display 7 Process Selector Switch 8 Welding Amperage 9 Welding Voltage 10 TIG Welding Symbol 11 Set Amperage 12 Hot Start Adjustment Switch 9 10 11 Prepare unit for TIG welding as follows: Connect electrode holder to negative weld output receptacle. Connect work clamp to positive weld output terminal. Turn power on. Allow time for unit complete its start up cycle. 6 5 7 4 12 Press and release Process selector switch to select TIG welding. Corresponding symbol is displayed. Use amperage adjustment control knob to set desired amperage value. Rotate knob clockwise to increase amperage (min - max). Slope Down Setting To change Slope Down setting, proceed as follows: Use the Amperage Adjustment control knob or switch to reduce amperage over a set period of time (0 - 20 seconds) at the end of the weld. The default setting is 2 seconds. Application 1 3 Slope Down should be used while TIG welding materials that are crack sensitive, and/or the operator wants to eliminate the crater at the end of the weld. 2 Ref. 956142881_7-B OM-253 918 Page 24 5-4. 2T − 4T Trigger Mode Selection (TIG Process) 1 2 3 4 Process Selection P1 Push Button Sequencer Set-Up P2 Push Button Sequencer Adjustment P3 Push Buttons Wire Feed Speed (WFS) Adjustment Knob While in TIG mode, select desired trigger mode as follows: Press and release P2 push button to enter in trigger mode set-up menu. Select desired trigger mode by using P3 push buttons or WFS adjustment knob. 5 Slope Up Time Use control to select amount of time that it takes to slope up/down from initial amperage to weld amperage. To disable, set to 0. When this item is selected, use the Wire Feed Speed adjustment knob or Sequencer adjustment P3 push buttons to change value. Default = 2 seconds (min = 0 sec, max = 20.0 sec). Trigger Mode Setup Menu 6 2T 1 4 Slope Down Time Use control to select amount of time that it takes to slope up/down from weld amperage to final amperage. To disable, set to 0. When this item is selected, use the Wire Feed Speed adjustment knob or Sequencer adjustment P3 push buttons to change value. Default = 2 seconds (min = 0 sec, max = 20.0 sec). Press P1 push button to save and exit from set-up menu. 3 Application Slope Down time should be used while TIG welding materials that are crack sensitive, and/or the operator wants to eliminate the crater at the end of the weld. 2 Press And Release 7 SCROLL THROUGH SEQUENCERS (2T And 4T Trigger Mode) 2T 4T 5 5 6 0.5S 6 7 0.5S 0.6S 0.6S 40A Final Current Use control to select amperage to which weld amperage will either slope up or down. When this item is selected, use the Wire Feed Speed adjustment knob or Sequencer adjustment P3 push button to change the value. Default = 20 amperes (min = 0A, max = 200A). Press P1 to save and exit from set-up menu. 3 4 2 Ref. 956142881_21-B OM-253 918 Page 25 5-5. Preparing Unit For Manual MIG (GMAW And FCAW) Welding Process To select MIG welding proceed as follows: Prepare unit according to Section 4. Use a cable with correct adapter, connect gun to the MIG gun connector. For GMAW process: Connect wire drive lead to positive output terminal. Connect work clamp lead to negative output terminal. See Section 4-5 for GMAW solid wire with shielding gas process. See Section 4-3 for installing gas supply. For FCAW process: Connect wire drive lead to negative output terminal. Connect work clamp lead to positive output terminal. See Section 4-5 for FCAW self-shielding wire no shielding gas process. 1 2 3 4 4 SYN OFF 1 5 3 Use knob to select desired welding voltage. Rotate knob clockwise to increase the output voltage value (min = 10 volts DC, max = 35 volts DC). 5 2 Press And Release Process Selection P1 Push Button Sequencer Set-Up P2 Push Button Sequencer Adjustment/Operator Point Setting P3 Push Buttons (See Section 5-16) Welding Voltage Adjustment Knob Wire Feed Speed (WFS) Adjustment Knob Use knob to select desired WFS. Rotate knob clockwise to increase WFS value (min = 0 mpm, max = 20.9 mpm). Set MIG welding process using process selection P1 push button. To enter in manual MIG mode, press and release sequencer set-up P2 push button. Use sequencer adjustment P3 push buttons until SYN−OFF is displayed. Press and release P2 again to confirm selection. . In manual MIG mode, the oper- ator may need to adjust main welding parameters for specific arc characteristics. Wire feed speed and arc voltage will appear on digital meter display. Ref. 956142881_8-A OM-253 918 Page 26 5-6. Manual MIG Welding Set-Up Menu To enter MIG welding set-up menu, proceed as follows: 1 2 Sequencer Set-Up P2 Push Button Wire Feed Speed (WFS) Adjustment Knob While in the set-up menu, use knob to change sequencer parameters. 3 4 Sequencer Adjustment/Operator Point Setting P3 Push Buttons (See Section 5-16) Process Selection P1 Push Button Press and hold P2 push button to enter into the set-up menu. Sequencers will be displayed on the digital meter display. To change parameters, use P3 push buttons or Wire Feed Speed (WFS) adjustment knob. To scroll through sequencers, press and release P2 push button. To exit from set-up menu, press and release process selection P1 push button and desired parameters will be stored. 5 Trigger Mode (2T/4T) Use the Wire Feed Speed adjustment knob or Sequencer adjustment P3 push buttons to change the value (see Section 5-7). 6 4 2 3 1 Press And Hold 7 SCROLL THROUGH SEQUENCERS 8 6 0.02S 3 3 0 0 3 0 7 0 8 0.0S 3 Burnback Time (BBT) Time that welding wire stays energized after trigger is released. This is a predetermined value in MIG mode and cannot be changed. 5 2T Slope Time Use control to select amount of time that it takes to slope up/down from initial amperage to weld amperage. To disable, set to 0. When this item is selected, use the Wire Feed Speed adjustment knob or Sequencer adjustment P3 push buttons to change the value. Default = 0.2 seconds (min = 0 sec, max = 1.5 sec). 9 Weld Output Inductance Use control to select inductance value. When this is selected, use the Wire Feed Speed adjustment knob or Sequencer adjustment P3 push buttons to change value. Default = 0 (min = 0, max = 11). Low inductance is used for most short arc applications. High inductance is for stainless steel and spray arc applications. 2 1 Press And Release Ref. 956142881_9-A OM-253 918 Page 27 5-6. Manual MIG Welding Set-Up Menu (Continued) . In short circuit GMAW welding, an increase in inductance will decrease the number of short circuit transfers per second (provided no other changes are made) and increase the arc-on time. The increased arc-on time makes the welding puddle more fluid. 9 Postflow Time Use control to set length of time gas flows after welding stops to protect the weld puddle. When this item is selected, use the Wire Feed Speed adjustment knob to change value. Default = 0.3 seconds (min = 0 sec, max = 3 sec). OM-253 918 Page 28 5-7. Trigger Mode And Spot Time Selection (MIG Process) . Always select a trigger mode. 1 2 3 1 4 3 Digital Display Meter Sequencer Set-Up P3 Push Buttons Wire Feed Speed (WFS) Adjustment Knob Sequencer Adjustment/Operator Point Setting P2 Push Button 2 To select trigger mode and spot weld timer, proceed as follows: 4 Press and hold P2 push button to enter into the set-up menu. Sequencers will be displayed on the digital meter display. To change parameters, use the P3 push buttons or Wire Feed Speed (WFS) adjustment knob. 5 2T Trigger Mode When trigger is pressed, welding starts. When trigger is released, welding stops. 6 4T Trigger Mode When trigger is pressed welding starts. When trigger is released, welding continues. When trigger is pressed and released a second time, welding stops. 5 2T 6 4T 7 7 Spot Weld Time Use control to set time that welding arc is active before shutting off automatically. When this is selected, use the Wire Feed Speed adjustment knob or Sequencer P3 push buttons to change value. Default = 2.2 seconds (min = 0 sec, max = 10 sec). . After turning On unit, display meter will show the latest trigger mode selected. Default is 2T. Ref. 956142881_10-A OM-253 918 Page 29 5-8. Preparing Unit For Synergic MIG (GMAW And FCAW) Welding Process To select MIG welding process, proceed as follows: Prepare unit according to Section 4. Use a cable with correct adapter, connect gun to the MIG gun connector. For GMAW process: Connect wire drive lead to positive output terminal. Connect work lead to negative output terminal. See Section 4-5 for GMAW solid wire with shielding gas process. See Section 4-3 for installing gas supply. For FCAW process: Connect wire drive lead to negative output terminal. Connect work clamp lead to positive output terminal. See Section 4-5 for FCAW self-shielding wire no shielding gas process. 1 2 3 Program Selection (See Section 5-15) Wire Type And Gas 4 1 SYN MIG 3 Arc Length Knob Adjustment 2 Press And Release Use knob to select desired workpiece thickness. Rotate knob clockwise to increase the thickness value. 5 Workpiece Thickness 5 4 Process Selection P1 Push Button Sequencer Set-Up P2 Push Button Sequencer Adjustment/Operator Point Setting P3 Push Buttons (See Section 5-16) Workpiece Thickness Adjustment Knob Arc Length Control Knob Use knob to select desired arc length value. It is the distance from end of wire electrode to the workpiece. Rotate knob clockwise to increase the arc length value (min = −40, max = +40). It allows setting inductance in MIG mode. In Pulse mode, this adjustment changes the arc cone by adjusting the preprogrammed factory pulse data. Set MIG welding process using process selection P1 push button. To enter synergic MIG mode, press and release sequencer set-up P2 push button. Use sequencer adjustment P3 push buttons until SYN-MIG is displayed. Press and release P2 again to confirm setting. . In Synergic MIG mode, the op- erator may need to adjust welding data (wire type, wire diameter and gas type) and only one weld parameter. Generally, wire feed speed is adjusted and the synergic process automatically sets appropriate weld voltage. Synergic welding also sets many secondary welding parameters automatically for improved weld quality. 956142881_11-A OM-253 918 Page 30 5-9. Synergic MIG Welding Set-Up Menu To enter MIG welding set-up menu, proceed as follows: 1 2 Sequencer Set-Up P2 Push Button Arc Length Control Knob While in the set-up menu, use knob to change sequencer parameters. 3 4 Sequencer Adjustment/Operator Point Setting P3 Push Buttons (See Section 5-16) Process Selection P1 Push Button Press and hold P2 push button to enter the set-up menu. Sequencers will be displayed on the digital meter display. To change parameters, use P3 push buttons or arc length control knob. To scroll through sequencers, press and release P2 push button. To exit set-up menu, press and release process selection P1 push button. Desired parameters will be stored. 5 SET-UP MENU 6 2 3 7 Burnback Time (BBT) Use Arc Length control knob to select amount of time that welding wire stays energized after trigger is released. When selected, use Arc Length control knob to change value. Default = 5 (min = 0, max = 10) 1 Press And Hold SCROLL THROUGH SEQUENCERS 2T Slope Time Use Arc Length control knob to select amount of time that it takes to slope up/down from initial amperage to weld amperage. To disable, set to 0. When selected, use Arc Length control knob or Sequencer adjustment P3 push buttons to change value, Default = 0.2 seconds (min = 0 sec, max = 1.5 sec). 4 5 Trigger Mode (2T/4T) Use arc length control knob or sequencer adjustment P3 push buttons to change value (see Section 5-7). 6 0.02S 3 3 3 0 0 0 7 0% 8 0S 3 9 2 1 Press And Release Ref. 956142881_12-A OM-253 918 Page 31 5-9. Synergic MIG Welding Set-Up Menu (Continued) 8 Percentage Of Weld Output Inductance Use Arc Length control knob to select the percentage of welding inductance value. When selected, use the knob or sequencer P3 push buttons to change value. Default = 0% (min = −10%, max = +10%). Low inductance is used for most short arc applications, High inductance is for stainless steel and spray arc applications. . In short circuit GMAW welding, an increase in inductance will decrease the number of short circuit transfers per second (provided no other changes are made) and increase the arc-on time. The increased arc-on time makes the welding puddle more fluid. 9 Postflow Time Use Arc Length control knob to set length of time gas flows after welding stops to protect the weld puddle. When this item is selected, use the Wire Feed Speed adjustment knob to change value. Default = 0.3 seconds (min = 0 sec, max = 3 sec). OM-253 918 Page 32 5-10. Preparing Unit For Synergic Pulsed MIG (GMAW And FCAW) Welding Process To select MIG welding process, proceed as follows: Prepare unit according to Section 4. Use a cable with correct adapter, connect gun to the MIG gun connector. For GMAW process: Connect wire drive lead to positive output terminal. Connect work lead to negative output terminal. See Section 4-5 for GMAW solid wire with shielding gas process. See Section 4-3 for installing gas supply. For FCAW process: Connect wire drive lead to negative output terminal. Connect work clamp lead to positive output terminal. See Section 4-5 for FCAW self-shielding wire no shielding gas process. 1 2 3 Program Selection (See Section 5-15) Wire Type And Gas 4 1 PULSED Workpiece Thickness 5 3 Arc Length Knob Adjustment 2 Press And Release 4 Process Selection P1 Push Button Sequencer Set-Up P2 Push Button Sequencer Adjustment/Operator Point Setting P3 Push Buttons (See Section 5-16) Workpiece Thickness Adjustment Knob Use Workpiece Thickness adjustment knob to select desired workpiece thickness. Rotate knob clockwise to increase the thickness value. 5 Arc Length Control Knob Use knob to select desired arc length value. It is the distance from end of wire electrode to the workpiece. Rotate knob clockwise to increase the arc length value (min = −40, max = +40). It allows setting inductance in MIG mode. In Pulse mode, this adjustment changes the arc cone by adjusting the preprogrammed factory pulse data. Ref. 956142881_13-A OM-253 918 Page 33 5-10. Preparing Unit For Synergic Pulsed MIG (GMAW And FCAW) Welding Process (Continued) Set MIG welding process using process selection P1 push button. To enter synergic pulsed MIG mode, press and release sequencer set-up P2 push button. Use sequencer adjustment P3 push buttons until PULSED is displayed. Press and release P2 again to confirm setting. . Synergic Pulsed MIG welding is a high quality welding process that produces vary little spatter because the wire does not touch the weld puddle. Applications best suited for pulsed MIG are those currently using the short circuit transfer method for welding steel, 14 gauge (1.8 mm) and up. This process works well on thin metals such as stainless steel and aluminum. . In Pulsed Synergic MIG mode, the operator may need to adjust welding data (wire type, wire diameter and gas type) and only one weld parameter. Generally, wire feed speed is adjusted and the synergic process automatically sets appropriate weld voltage. Synergic welding also sets many secondary welding parameters automatically for improved weld quality. OM-253 918 Page 34 5-11. Synergic Pulsed MIG Welding Set-Up Menu To enter MIG welding set-up menu, proceed as follows: 1 2 Sequencer Set-Up P2 Push Button Arc Length Control Knob While in the set-up menu, use knob to change sequencer parameters. 3 4 Sequencer Adjustment/Operator Point Setting P3 Push Buttons (See Section 5-16) Process Selection P1 Push Button Press and hold P2 push button to enter the set-up menu. Sequencers will be displayed on the digital meter display. To change parameters, use P3 push buttons or arc length control knob. To scroll through sequencers, press and release P2 push button. To exit set-up menu, press and release process selection P1 push button. Desired parameters will be stored. 5 Trigger Mode (2T/4T) Use arc length control knob or sequencer adjustment P3 push buttons to change value (see Section 5-7). SET-UP MENU 6 Slope Time Use Arc Length control knob to select amount of time that it takes to slope up/down from initial amperage to weld amperage. To disable, set to 0. When selected, use Arc Length control knob or Sequencer adjustment P3 push buttons to change value, Default = 0.2 seconds (min = 0 sec, max = 1.5 sec). 4 2 3 7 Burnback Time (BBT) This value is set to 1 second. 1 8 SCROLL THROUGH SEQUENCERS 5 2T 0S 6 8 0.02S Postflow Time Use Arc Length control knob to set length of time gas flows after welding stops to protect the weld puddle. When this item is selected, use the Wire Feed Speed adjustment knob to change value. Default = 0.3 seconds (min = 0 sec, max = 3 sec). Press And Hold . In Synergic Pulsed MIG, welding inductance cannot be set. 1 7 3 2 1 Press And Release Ref. 956142881_14-A OM-253 918 Page 35 5-12. 4T Trigger Set-Up Menu (Synergic Pulsed MIG Welding Only) To enter 4T trigger set-up menu: Follow instructions listed in Section 5-7. 1 2 Postflow Time (See Section 5-11) Arc Power (Hot Start) Percentage Percent increase of welding current to make arc start easier. When this item is selected, use the Arc Length control knob or Sequencer adjustment P3 push buttons to change value. Default = 120% (min = 100%, max = 150%). 3 Welding Current Percentage Percent reduction of welding current during the crater fill process. When this item is selected, use the Arc Length control knob or Sequencer adjustment P3 push buttons to change value. Default = 80% (min = 30%, max = 100%). 4 Slope Down Time Time necessary for current decrease when using slope down control. When this item is selected, use the Arc Length control knob or Sequencer adjustment P3 push buttons to change value. Default = 0.5 seconds (min = 0.1 sec, max = 2.0 sec). SET-UP MENU Press And Release SCROLL THROUGH PARAMETERS 3.0S 1 2 12.6% 48% 3 1.4S 4 Press And Release Ref. 956142881_15-A OM-253 918 Page 36 5-13. Welding Wire Loading Settings Prepare unit for welding wire loading as follows: S Install wire spool and adjust hub tension (see Section 4-7). S Use proper drive rolls and wire guide (see Section 4-8). S Thread welding wire and adjust pressure roll tension (see Section 4-12). Without starting a weld, press and hold torch trigger for three seconds to load welding wire. . After pressing and holding the torch trigger, gas valve and input power contactor are disabled. This method prevents the risks of arc ignitions due to contact with conductive surfaces during wire loading. Welding wire will be loaded at a wire feed value of about 11 mpm. The wire feed speed is only measured in meters per minute. To stop loading wire, release torch trigger. Ref. 956142881_16-A OM-253 918 Page 37 5-14. Resetting Unit To Factory Default Settings . This procedure will delete all operator specified parameters and recall all factory parameters. 1 P2 H Power Switch Use power switch to turn unit on. When Miller appears on the display, press and release sequencer set-up P2 push button. Basic set-up menu will be displayed. Press and hold P2 until OK is displayed by resetting parameters. Factory defaults are now restored. Press And Hold 1 956142881_24-B 5-15. Loading A Program Program Number P3 PULSED P2 0.6 PRG#001 PRG#001 To load programs, press and release sequencer set-up P2 push button (see Section 5-8 and Section 5-10) until program number is displayed. Use sequencer adjustment P3 push buttons to select desired program. Press P2 push button to confirm selected program. 0 Press And Release Ref. 956142887-A OM-253 918 Page 38 5-16. Operator Point MIG Parameters Loading . This setting is only available in MIG mode. It allows the operator to load and save desired specified weld parameters and recall them when required. Store parameters: P1 Press and release P3 push buttons simultaneously to enter the operator point set-up menu. Use P3 push buttons to select desired position where parameters will be stored. Press and hold Sequencer P2 push button for about 10 seconds to save parameters. Saving OK will be displayed on the digital meter. Press and release process selection P1 push button to exit set-up menu. P3 P2 Recall parameters: Press and release P3 push buttons simultaneously to enter the operator point set-up menu. Use P3 push buttons to select desired stored parameters. Press and release Sequencer P2 push button to load parameters. Press And Release (Entering In Set-Up Menu) Press And Hold (Save Program) OR Press And Release Press And Release Press And Release (Loading A Program) Ref. 956142881_22-A OM-253 918 Page 39 5-17. Rated Supply Current I1 = 16 Amps Setting This setting allows the operator to use the unit with a maximum of 16 amperes of rated supply current I1. Before setting the rated supply current I1, 1 P1 ! Follow the Electromagnetic Compatibility (EMC) information according to Section 3-1B. P3 ! Connect single phase input power according to Section 4-11. . By setting a lower rated supply current I1 , the unit cannot have the same performance then that listed in Section 3-2 and 4-10 under normal operating conditions. P2 1 Power Switch Use power switch to turn unit on. When Miller appears on the display, press and release sequencer set-up P2 push button. Unit is at default setting of H (high rated supply current I1). Use sequencer parameters adjustment P3 push buttons to set unit to L (low rated supply current I1, max value = −16 amperes). Press and release P2 to confirm setting. Press and release process selection P1 push button to exit menu. H L The next time the unit is turned on, the latest settings will be retained. . To return to factory default settings, see Section 5-14. OR Press And Release (Entering In Set-Up Menu) Press And Release Press And Release (To Change Parameter) Ref. 956142881_23-B OM-253 918 Page 40 5-18. Basic Set-Up Menu Parameters Settings 1 Power Switch Use power switch to turn unit on. When Miller appears on the display, press and release sequencer set-up P2 push button. Basic set-up menu will be displayed. 1 P1 2 Initial Wire Feed Speed (WFS) Settings Press and release P2 push button to select desired parameter. Use P3 push buttons to change value. This value is either “reduced” or “normal”. Default is set to “reduced”. P3 3 P2 Wire Feed Speed (WFS) Unit Of Measurement Settings Press and release P2 push button to select desired parameter. Use P3 push buttons to change value. Available units of measurement are either MPM (meters per minute) or IPM (inches per minute). Default is set to “MPM”. 4 See Section 5-17 H RESETTING See Section 5-17 L 2 3 4 5 6 Press and release P2 push button to select desired parameter. Use P3 push buttons to change value. This value is either “OFF” or “ON”. Default is set to “ON”. 5 Digital Meter Display Setting Press and release P2 push button to select desired parameter. Use P3 push buttons to change value. This value is either “OFF” or “ON”. Default is set to “ON”. 6 LCD Contrast Settings Press and release P2 push button to select desired parameter. Use P3 push buttons to change value. Default is set to “51” (min = 30, max = 63). OR Press And Release (Entering In Set-Up Menu) Voltage Reduction Device (VRD) Settings Press And Release Press And Release (To Change Parameter) Press and release process selection P1 push button to exit menu. The next time the unit is turned on, the latest settings will be retained. . To return to factory default settings, see Section 5-14. Ref. 956142881_23-B OM-253 918 Page 41 5-19. Weld Parameter Chart 956.142.897-A OM-253 918 Page 42 SECTION 6 − MAINTENANCE & TROUBLESHOOTING 6-1. Routine Maintenance ! n = Check Z = Change ~ = Clean * To be done by Factory Authorized Service Agent Disconnect power before maintaining. . Maintain more often during severe conditions. l = Replace Reference Every 3 Months l Unreadable Labels Every 6 Months ~ Weld Terminals nl Weld Cables n Apply Light Coat Of Oil Or Grease To Drive Motor Shaft ~ Clean Drive Rolls OR ~ Inside Unit 6-2. Welding Gun And Wire Drive Assembly 1 Welding Gun Check gun liner for blockage or kinks. 2 Wire Drive Assembly Check for jammed wire, binding drive gear or misaligned drive rolls. Allow cooling period. Close door. 1 2 956142881_3-A 6-3. Unit Overload Thermal switches TP1 and TP2 located on the primary and secondary heatsink protect the unit from damage due to overheating. If TP1 and/or TP2 have opened due to overheating, wait for unit to cool allowing fan motor to run before trying to weld. If unit is cool and no weld output continues, contact Factory Authorized Service Agent. OM-253 918 Page 43 6-4. Troubleshooting A. MIG (GMAW) Welding Trouble Remedy No weld output; wire does not feed. Be sure line disconnect switch is On (see Section 4-11). Replace building line fuse or reset circuit breaker if open (see Section 4-11). Secure gun trigger connections (see welding gun Owner’s Manual). Check continuity of power switch S1 and replace if necessary. Have Factory Authorized Service Agent check main transformer T1 for signs of winding failure. Check continuity across windings and check for proper connections. Check secondary voltages. Replace T1 if necessary. Have Factory Authorized Service Agent check continuity of thermostats TP1 and TP2. Replace TP1 and/or TP2 if necessary. Have Factory Authorized Service Agent check main control board PC2 and connections, and replace if necessary. Have Factory Authorized Service Agent check all board connections and main control board. No weld output; wire feeds. Connect work clamp to get good metal to metal contact. Replace contact tip (see welding gun Owner’s Manual). An overload condition occurred (see Section 6-3). Have Factory Authorized Service Agent check primary and secondary power circuit of the unit. Have Factory Authorized Service Agent check main transformer T1 for signs of winding failure. Check continuity across windings and check for proper connections. Check secondary voltages. Replace T1 if necessary. Have Factory Authorized Service Agent check voltage switch(es), and replace if necessary. Low weld output. Connect unit to proper input voltage or check for low line voltage (see Section 4-11). Low, high, or erratic wire speed. Readjust front panel settings (see Section 5). Change to correct size drive rolls (see Section 4-8). Readjust drive roll pressure (see Section 4-12). Replace inlet guide, contact tip, and/or liner if necessary (see welding gun Owner’s Manual). Have Factory Authorized Service Agent check Wire Speed control, and replace if necessary. Have Factory Authorized Service Agent check motor control board PC4 and connections, and replace if necessary. No wire feed. Rotate Wire Speed control to higher setting (see Section 5). Clear obstruction in gun contact tip or liner (see welding gun Owner’s Manual). Readjust drive roll pressure (see Section 4-12). Change to correct size drive rolls (see Section 4-8). Rethread welding wire (see Section 4-12). Check gun trigger and leads. Repair or replace gun if necessary. Have Factory Authorized Service Agent check main control board. OM-253 918 Page 44 B. Stick (SMAW) Welding Trouble Remedy Hard starts, poor welding characterist- Use proper type and size of electrode. ics, unusual spattering. Check electrode polarity and reverse in necessary; check and correct poor connections Make sure a remote control is not connected. C. TIG (GTAW) Welding Trouble Remedy Wandering arc, hard starts, poor welding Use proper type and size of tungsten. characteristics, spattering problems. Use properly prepared tungsten. Check electrode polarity and reverse if necessary. Tungsten electrode oxidizing and not Shield weld zone from drafts. remaining bright after welding. Check for correct type shielding gas. Check and tighten gas fittings. Check electrode polarity and reverse if necessary. OM-253 918 Page 45 SECTION 7 − ELECTRICAL DIAGRAMS Figure 7-1. Circuit Diagram For Welding Power Source OM-253 918 Page 46 956142882-B OM-2253 918 Page 47 SECTION 8 − MIG WELDING (GMAW) GUIDELINES mig1 2009−12 8-1. Typical MIG Process Connections ! Weld current can damage electronic parts in vehicles. Disconnect both battery cables before welding on a vehicle. Place work clamp as close to the weld as possible. Regulator/ Flowmeter Wire Feeder/ Power Source Gun Shielding Gas Gas Workpiece Work Clamp Ref. 801 909-A OM-253 918 Page 48 8-2. Typical MIG Process Control Settings . These settings are guidelines only. Material and wire type, joint design, fitup, position, shielding gas, etc. affect settings. Test welds to be sure they comply to specifications. Material thickness determines weld parameters. 1/8 or 0.125 in. Convert Material Thickness to Amperage (A) (0.001 in. = 1 ampere) 0.125 in. = 125 A .035 in Wire Size Wire Size Amperage Range 0.023 in. 30 − 90 A 0.030 in. 40 − 145 A 0.035 in. 50 − 180 A Recommendation Wire Speed (Approx.) 0.023 in. 3.5 in. per ampere 3.5 x 125 A = 437 ipm 0.030 in. 2 in. per ampere 2 x 125 A = 250 ipm 0.035 in. 1.6 in. per ampere 1.6 x 125 A = 200 ipm Select Wire Size Select Wire Speed (Amperage) 125 A based on 1/8 in. material thickness ipm = inches per minute Low voltage: wire stubs into work High voltage: arc is unstable (spatter) Select Voltage Set voltage midway between high/low voltage Voltage controls height and width of weld bead. Wire speed (amperage) controls weld penetration (wire speed = burn-off rate) OM-253 918 Page 49 8-3. Holding And Positioning Welding Gun . Welding wire is energized when gun trigger is pressed. Before lowering helmet and pressing trigger, be sure wire is no more than 1/2 in. (13 mm) past end of nozzle, and tip of wire is positioned correctly on seam. 1 1 3 2 2 3 4 5 5 Hold Gun and Control Gun Trigger Workpiece Work Clamp Electrode Extension (Stickout) 1/4 to 1/2 in. (6 To 13 mm) Cradle Gun and Rest Hand on Workpiece 4 0°-15° 90° 90° End View of Work Angle Side View of Gun Angle GROOVE WELDS 0°-15° 45° 45° End View of Work Angle Side View of Gun Angle FILLET WELDS OM-253 918 Page 50 S-0421-A 8-4. Conditions That Affect Weld Bead Shape . Weld bead shape depends on gun angle, direction of travel, electrode extension (stickout), travel speed, thickness of base metal, wire feed speed (weld current), and voltage. 10° Push 10° Drag Perpendicular GUN ANGLES AND WELD BEAD PROFILES Short Normal Long ELECTRODE EXTENSIONS (STICKOUT) Short Normal Long FILLET WELD ELECTODE EXTENSIONS (STICKOUT) Slow Normal GUN TRAVEL SPEED Fast S-0634 OM-253 918 Page 51 8-5. Gun Movement During Welding . Normally, a single stringer bead is satisfactory for most narrow groove weld joints; however, for wide groove weld joints or bridging across gaps, a weave bead or multiple stringer beads works better. 1 1 2 2 3 Stringer Bead − Steady Movement Along Seam Weave Bead − Side To Side Movement Along Seam Weave Patterns Use weave patterns to cover a wide area in one pass of the electrode. 3 S-0054-A 8-6. Poor Weld Bead Characteristics 1 2 3 1 2 3 4 5 Large Spatter Deposits Rough, Uneven Bead Slight Crater During Welding Bad Overlap Poor Penetration 4 5 S-0053-A 8-7. Good Weld Bead Characteristics 1 2 3 1 Fine Spatter Uniform Bead Moderate Crater During Welding Weld a new bead or layer for each 1/8 in. (3.2 mm) thickness in metals being welded. 4 5 2 3 4 No Overlap Good Penetration into Base Metal 5 S-0052-B OM-253 918 Page 52 8-8. Troubleshooting − Excessive Spatter Excessive Spatter − scattering of molten metal particles that cool to solid form near weld bead. S-0636 Possible Causes Corrective Actions Wire feed speed too high. Select lower wire feed speed. Voltage too high. Select lower voltage range. Electrode extension (stickout) too long. Use shorter electrode extension (stickout). Workpiece dirty. Remove all grease, oil, moisture, rust, paint, undercoating, and dirt from work surface before welding. Insufficient shielding gas at welding arc. Increase flow of shielding gas at regulator/flowmeter and/or prevent drafts near welding arc. Dirty welding wire. Use clean, dry welding wire. Eliminate pickup of oil or lubricant on welding wire from feeder or liner. Incorrect polarity. 8-9. Check polarity required by welding wire, and change to correct polarity at welding power source. Troubleshooting − Porosity Porosity − small cavities or holes resulting from gas pockets in weld metal. S-0635 Possible Causes Insufficient shielding gas at welding arc. Corrective Actions Increase flow of shielding gas at regulator/flowmeter and/or prevent drafts near welding arc. Remove spatter from gun nozzle. Check gas hoses for leaks. Place nozzle 1/4 to 1/2 in. (6-13 mm) from workpiece. Hold gun near bead at end of weld until molten metal solidifies. Wrong gas. Use welding grade shielding gas; change to different gas. Dirty welding wire. Use clean, dry welding wire. Eliminate pick up of oil or lubricant on welding wire from feeder or liner. Workpiece dirty. Remove all grease, oil, moisture, rust, paint, coatings, and dirt from work surface before welding. Use a more highly deoxidizing welding wire (contact supplier). Welding wire extends too far out of nozzle. Be sure welding wire extends not more than 1/2 in. (13 mm) beyond nozzle. 8-10. Troubleshooting − Excessive Penetration Excessive Penetration − weld metal melting through base metal and hanging underneath weld. Excessive Penetration Good Penetration Possible Causes Excessive heat input. S-0639 Corrective Actions Select lower voltage range and reduce wire feed speed. Increase travel speed. OM-253 918 Page 53 8-11. Troubleshooting − Lack Of Penetration Lack Of Penetration − shallow fusion between weld metal and base metal. Lack of Penetration Good Penetration S-0638 Possible Causes Corrective Actions Improper joint preparation. Material too thick. Joint preparation and design must provide access to bottom of groove while maintaining proper welding wire extension and arc characteristics. Improper weld technique. Maintain normal gun angle of 0 to 15 degrees to achieve maximum penetration. Keep arc on leading edge of weld puddle. Be sure welding wire extends not more than 1/2 in. (13 mm) beyond nozzle. Insufficient heat input. Select higher wire feed speed and/or select higher voltage range. Reduce travel speed. Incorrect polarity. Check polarity required by welding wire, and change to correct polarity at welding power source. 8-12. Troubleshooting − Incomplete Fusion Incomplete Fusion − failure of weld metal to fuse completely with base metal or a preceeding weld bead. S-0637 Possible Causes Corrective Actions Workpiece dirty. Remove all grease, oil, moisture, rust, paint, undercoating, and dirt from work surface before welding. Insufficient heat input. Select higher voltage range and/or adjust wire feed speed. Improper welding technique. Place stringer bead in proper location(s) at joint during welding. Adjust work angle or widen groove to access bottom during welding. Momentarily hold arc on groove side walls when using weaving technique. Keep arc on leading edge of weld puddle. Use correct gun angle of 0 to 15 degrees. 8-13. Troubleshooting − Burn-Through Burn-Through − weld metal melting completely through base metal resulting in holes where no metal remains. S-0640 Possible Causes Excessive heat input. Corrective Actions Select lower voltage range and reduce wire feed speed. Increase and/or maintain steady travel speed. OM-253 918 Page 54 8-14. Troubleshooting − Waviness Of Bead Waviness Of Bead − weld metal that is not parallel and does not cover joint formed by base metal. S-0641 Possible Causes Corrective Actions Welding wire extends too far out of nozzle. Be sure welding wire extends not more than 1/2 in. (13 mm) beyond nozzle. Unsteady hand. Support hand on solid surface or use two hands. 8-15. Troubleshooting − Distortion Distortion − contraction of weld metal during welding that forces base metal to move. Base metal moves in the direction of the weld bead. Possible Causes Excessive heat input. S-0642 Corrective Actions Use restraint (clamp) to hold base metal in position. Make tack welds along joint before starting welding operation. Select lower voltage range and/or reduce wire feed speed. Increase travel speed. Weld in small segments and allow cooling between welds. OM-253 918 Page 55 8-16. Common MIG Shielding Gases This is a general chart for common gases and where they are used. Many different combinations (mixtures) of shielding gases have been developed over the years. The most commonly used shielding gases are listed in the following table. Application Gas Spray Arc Steel Short Circuiting Steel Short Circuiting Stainless Steel Aluminum X Argon X Argon + 25% CO2 80% or greater Argon + balance CO2 or Oxygen X X1 X 100% CO2 Tri-Mix2 X 1 Limited short circuiting use 2 90% HE + 7-1/2% AR + 2-1/2% CO2 8-17. Troubleshooting Guide For Semiautomatic Welding Equipment Problem Probable Cause Wire feed motor operates, but Too little pressure on wire feed rolls. wire does not feed. Incorrect wire feed rolls. Wire curling up in front of the wire feed rolls (bird nesting). Wire feeds, but no gas flows. Remedy Increase pressure setting on wire feed rolls. Check size stamped on wire feed rolls, replace to match wire size and type if necessary. Wire spool brake pressure too high. Decrease brake pressure on wire spool. Restriction in the gun and/or assembly. Check and replace cable, gun, and contact tip if damaged. Check size of contact tip and cable liner, replace if necessary. Too much pressure on wire feed rolls. Decrease pressure setting on wire feed rolls. Incorrect cable liner or gun contact tip size. Check size of contact tip and check cable liner length and diameter, replace if necessary. Gun end not inserted into drive housing properly. Loosen gun securing bolt in drive housing and push gun end into housing just enough so it does not touch wire feed rolls. Dirty or damaged (kinked) liner. Replace liner. Gas cylinder empty. Replace empty gas cylinder. Gas nozzle plugged. Clean or replace gas nozzle. Gas cylinder valve not open or flowmeter not adjusted. Open gas valve at cylinder and adjust flow rate. Restriction in gas line. Check gas hose between flowmeter and wire feeder, and gas hose in gun and cable assembly. Loose or broken wires to gas solenoid. Have Factory Authorized Service Agent repair wiring. Gas solenoid valve not operating. Have Factory Authorized Service Agent replace gas solenoid valve. Incorrect primary voltage connected to welding power Check primary voltage and relink welding power source source. for correct voltage. OM-253 918 Page 56 Problem Probable Cause Remedy Welding arc not stable. Wire slipping in drive rolls. Adjust pressure setting on wire feed rolls. Replace worn drive rolls if necessary. Wrong size gun liner or contact tip. Match liner and contact tip to wire size and type. Incorrect voltage setting for selected wire feed speed on Readjust welding parameters. welding power source. Loose connections at the gun weld cable or work cable. Check and tighten all connections. Gun in poor shape or loose connection inside gun. Repair or replace gun as necessary. OM-253 918 Page 57 SECTION 9 − STICK WELDING (SMAW) GUIDELINES 9-1. Stick Welding Procedure ! Weld current starts when electrode touches workpiece. ! Weld current can damage electronic parts in vehicles. Disconnect both battery cables before welding on a vehicle. Place work clamp as close to the weld as possible. Equipment Needed: Tools Needed: . Always wear appropriate per1 Constant Current Welding Power Source sonal protective clothing. Workpiece Make sure workpiece is clean before welding. 2 3 Work Clamp Electrode A small diameter electrode requires less current than a large one. Follow electrode manufacturer’s instructions when setting weld amperage (see Section 9-2). 4 5 6 5 4 Insulated Electrode Holder Electrode Holder Position Arc Length Arc length is the distance from the electrode to the workpiece. A short arc with correct amperage will give a sharp, crackling sound. 2 7 3 Slag Use a chipping hammer and wire brush to remove slag. Remove slag and check weld bead before making another weld pass. 6 1 7 stick 2010−02 − 151 593 OM-253 918 Page 58 6013 7014 7018 7024 Ni-Cl 308L ALL DEEP EP ALL DEEP 6013 EP,EN ALL LOW GENERAL 7014 EP,EN ALL MED 7018 EP ALL MED SMOOTH, EASY, FAST LOW HYDROGEN, STRONG 7024 EP,EN NI-CL EP FLAT HORIZ FILLET ALL 308L EP ALL USAGE EP 6011 AC PENETRATION 3/32 1/8 5/32 3/16 7/32 1/4 1/16 5/64 3/32 1/8 5/32 3/16 7/32 1/4 3/32 1/8 5/32 3/16 7/32 1/4 3/32 1/8 5/32 3/16 7/32 1/4 3/32 1/8 5/32 3/16 7/32 1/4 3/32 1/8 5/32 3/16 3/32 1/8 5/32 DC* 6010 ELECTRODE 450 400 350 300 250 200 150 POSITION 6010 & 6011 100 50 DIAMETER AMPERAGE RANGE Electrode and Amperage Selection Chart ELECTRODE 9-2. MIN. PREP, ROUGH HIGH SPATTER LOW SMOOTH, EASY, FASTER LOW CAST IRON LOW STAINLESS *EP = ELECTRODE POSITIVE (REVERSE POLARITY) EN = ELECTRODE NEGATIVE (STRAIGHT POLARITY) Ref. S-087 985-A 9-3. Striking an Arc 1 2 3 Electrode Workpiece Arc Scratch Technique 1 2 Drag electrode across workpiece like striking a match; lift electrode slightly after touching work. If arc goes out, electrode was lifted too high. If electrode sticks to workpiece, use a quick twist to free it. Tapping Technique Bring electrode straight down to workpiece; then lift slightly to start arc. If arc goes out, electrode was lifted too high. If electrode sticks to workpiece, use a quick twist to free it. 3 1 2 3 S-0049 / S-0050 OM-253 918 Page 59 9-4. Positioning Electrode Holder 1 2 End View Of Work Angle Side View Of Electrode Angle 1 10°-30° 90° 2 90° Groove Welds 10°-30° 45° 1 2 45° Fillet Welds S-0060 9-5. Poor Weld Bead Characteristics 1 2 3 4 5 Large Spatter Deposits Rough, Uneven Bead Slight Crater During Welding Bad Overlap Poor Penetration 4 2 3 5 1 S-0053-A 9-6. Good Weld Bead Characteristics 1 2 3 Fine Spatter Uniform Bead Moderate Crater During Welding Weld a new bead or layer for each 1/8 in. (3.2 mm) thickness in metals being welded. 2 3 4 5 4 5 No Overlap Good Penetration into Base Metal 1 S-0052-B OM-253 918 Page 60 9-7. Conditions That Affect Weld Bead Shape . Weld bead shape is affected by electrode angle, arc length, travel speed, and thickness of base metal. Angle Too Small Correct Angle 10° - 30° Angle Too Large Electrode Angle Drag Spatter Arc Length Too Short Normal Too Long Slow Normal Fast Travel Speed S-0061 9-8. Electrode Movement During Welding . Normally, 2 1 1 2 3 3 a single stringer bead is satisfactory for most narrow groove weld joints; however, for wide groove weld joints or bridging across gaps, a weave bead or multiple stringer beads work better. Stringer Bead − Steady Movement Along Seam Weave Bead − Side to Side Movement Along Seam Weave Patterns Use weave patterns to cover a wide area in one pass of the electrode. Do not let weave width exceed 2-1/2 times diameter of electrode. S-0054-A OM-253 918 Page 61 9-9. Groove (Butt) Joints 1 Tack Welds Prevent edges of joint from drawing together ahead of electrode by tack welding the materials in position before final weld. 1 2 2 Square Groove Weld Good for materials up to 3/16 in. (5 mm) thick. 3 1/16 in. (1.6 mm) Single V-Groove Weld Good for materials 3/16 − 3/4 in. (5-19 mm) thick. Cut bevel with oxyacetylene or plasma cutting equipment. Remove scale from material after cutting. A grinder can also be used to prepare bevels. 30° Create 30 degree angle of bevel on materials in V-groove welding. 4 Good for materials thicker than 3/16 in. (5 mm). 4 3 Double V-Groove Weld S-0062 9-10. Lap Joint 1 2 Electrode Single-Layer Fillet Weld Move electrode in circular motion. 3 30° Or Less 30° Or Less 1 1 Multi-Layer Fillet Weld Weld a second layer when a heavier fillet is needed. Remove slag before making another weld pass. Weld both sides of joint for maximum strength. 3 2 S-0063 / S-0064 9-11. Tee Joint 1 2 Electrode Fillet Weld Keep arc short and move at definite rate of speed. Hold electrode as shown to provide fusion into the corner. Square edge of the weld surface. For maximum strength weld both sides of upright section. 1 2 45° Or Less 1 2 3 3 Multi-Layer Deposits Weld a second layer when a heavier fillet is needed. Use any of the weaving patterns shown in Section 9-8. Remove slag before making another weld pass. S-0060 / S-0058-A / S-0061 OM-253 918 Page 62 9-12. Weld Test 1 2 3 Vise Weld Joint Hammer Strike weld joint in direction shown. A good weld bends over but does not break. 3 3 2 To 3 in. (51-76 mm) 1/4 in. (6.4 mm) 2 1 2 To 3 in. (51-76 mm) 2 1 S-0057-B 9-13. Troubleshooting Porosity − small cavities or holes resulting from gas pockets in weld metal. Possible Causes Corrective Actions Arc length too long. Reduce arc length. Damp electrode. Use dry electrode. Workpiece dirty. Remove all grease, oil, moisture, rust, paint, coatings, slag, and dirt from work surface before welding. Excessive Spatter − scattering of molten metal particles that cool to solid form near weld bead. Possible Causes Corrective Actions Amperage too high for electrode. Decrease amperage or select larger electrode. Arc length too long or voltage too high. Reduce arc length or voltage. Incomplete Fusion − failure of weld metal to fuse completely with base metal or a preceeding weld bead. Possible Causes Corrective Actions Insufficient heat input. Increase amperage. Select larger electrode and increase amperage. Improper welding technique. Place stringer bead in proper location(s) at joint during welding. Adjust work angle or widen groove to access bottom during welding. Momentarily hold arc on groove side walls when using weaving technique. Keep arc on leading edge of weld puddle. Workpiece dirty. Remove all grease, oil, moisture, rust, paint, coatings, slag, and dirt from work surface before welding. OM-253 918 Page 63 Lack Of Penetration − shallow fusion between weld metal and base metal. Lack of Penetration Good Penetration Possible Causes Corrective Actions Improper joint preparation. Material too thick. Joint preparation and design must provide access to bottom of groove. Improper weld technique. Keep arc on leading edge of weld puddle. Insufficient heat input. Increase amperage. Select larger electrode and increase amperage. Reduce travel speed. Excessive Penetration − weld metal melting through base metal and hanging underneath weld. Excessive Penetration Good Penetration Possible Causes Corrective Actions Excessive heat input. Select lower amperage. Use smaller electrode. Increase and/or maintain steady travel speed. Burn-Through − weld metal melting completely through base metal resulting in holes where no metal remains. Possible Causes Corrective Actions Excessive heat input. Select lower amperage. Use smaller electrode. Increase and/or maintain steady travel speed. Waviness Of Bead − weld metal that is not parallel and does not cover joint formed by base metal. Possible Causes Corrective Actions Unsteady hand. Use two hands. Practice technique. Distortion − contraction of weld metal during welding that forces base metal to move. Base metal moves in the direction of the weld bead. Possible Causes Corrective Actions Excessive heat input. Use restraint (clamp) to hold base metal in position. Make tack welds along joint before starting welding operation. Select lower amperage for electrode. Increase travel speed. Weld in small segments and allow cooling between welds. OM-253 918 Page 64 SECTION 10 − SELECTING AND PREPARING A TUNGSTEN FOR DC OR AC WELDING WITH INVERTER MACHINES gtaw_Inverter_2011-06 Whenever possible and practical, use DC weld output instead of AC weld output. 10-1. Selecting Tungsten Electrode (Wear Clean Gloves To Prevent Contamination Of Tungsten ) . Not all tungsten electrode manufacturers use the same colors to identify tungsten type. Contact the tungsten electrode manufacturer or reference the product packaging to identify the tungsten you are using. Amperage Range - Gas Type♦ - Polarity Electrode Diameter (DCEN) − Argon AC − Argon Direct Current Electrode Negative Balance Control @ 65% Electrode Negative (For Use With Aluminum) (For Use With Mild Or Stainless Steel) 2% Ceria, 1.5% Lanthanum, Or 2% Thorium Alloy Tungstens .010 in. (1 mm) Up to 25 Up to 20 .020 in. (1 mm) 15-40 15-35 .040 in. (1 mm) 25-85 20-80 1/16 in. (1.6 mm) 50-160 50-150 3/32 in. (2.4 mm) 130-250 135-235 1/8 in. (3.2 mm) 250-400 225-360 5/32 in. (4.0 mm) 400-500 300-450 3/16 in (4.8 mm) 500-750 400-500 1/4 in. (6.4 mm) 750-1000 600-800 ♦Typical argon shielding gas flow rates are 11 to 35 CFH (cubic feet per hour). Figures listed are a guide and are a composite of recommendations from American Welding Society (AWS) and electrode manufacturers. 10-2. Preparing Tungsten Electrode For DC Electrode Negative (DCEN) Welding Or AC Welding With Inverter Machines Grinding the tungsten electrode produces dust and flying sparks which can cause injury and start fires. Use local exhaust (forced ventilation) at the grinder or wear an approved respirator. Read MSDS for safety information. Consider using tungsten containing ceria, lanthana, or yttria instead of thoria. Grinding dust from thoriated electrodes contains low-level radioactive material. Properly dispose of grinder dust in an environmentally safe way. Wear proper face, hand, and body protection. Keep flammables away. Radial Grinding Causes Wandering Arc 2-1/2 Times Electrode Diameter 1 3 2 1 Grinding Wheel Grind end of tungsten on fine grit, hard abrasive wheel before welding. Do not use wheel for other jobs or tungsten can become contaminated causing lower weld quality. 2 Tungsten Electrode A 2% ceriated tungsten is recommended. Wrong Tungsten Preparation 4 Ideal Tungsten Preparation − Stable Arc 3 Flat Diameter of this flat determines amperage capacity. 4 Straight Ground Grind lengthwise, not radial. OM-253 918 Page 65 SECTION 11 − GUIDELINES FOR TIG WELDING (GTAW) 11-1. Positioning The Torch ! Grinding the tungsten electrode produces dust and flying sparks which can cause injury and start fires. Use local exhaust (forced ventilation) at the grinder or wear an approved respirator. Read MSDS for safety information. Consider using cerium or lanthanum based tungsten instead of thoriated. Thorium dust contains low-level radioactive material. Properly dispose of grinder dust in an environmentally safe way. Wear proper face, hand, and body protection. Keep flammables away. 1 Workpiece 3 2 4 90° Make sure workpiece is clean before welding. 1 2 Work Clamp Place as close to the weld as possible. 3 4 5 6 10−15° 4 5 6 10−25° 5 6 Torch Filler Rod (If Applicable) Gas Cup Tungsten Electrode Select and prepare tungsten according to Section 10. Guidelines: The inside diameter of the gas cup should be at least three times the tungsten diameter to provide adequate shielding gas coverage. (For example, if tungsten is 1/16 in. diameter, gas cup should be a minimum of 3/16 in. diameter. Tungsten extension is the distance the tungsten extends out gas cup of torch. 1/16 in. 3/16 in. Bottom View Of Gas Cup The tungsten extension should be no greater than the inside diameter of the gas cup. Arc length is the distance from the tungsten to the workpiece. Ref. ST-161 892 OM-253 918 Page 66 11-2. Torch Movement During Welding Tungsten Without Filler Rod 75° Welding direction Form pool Tilt torch Move torch to front of pool. Repeat process. Tungsten With Filler Rod 75° Welding direction Form pool 15° Tilt torch Remove rod Add filler metal Move torch to front of pool. Repeat process. ST-162 002-B 11-3. Positioning Torch Tungsten For Various Weld Joints “T” Joint Butt Weld And Stringer Bead 20° 90° 70° 75° 20° 10° 15° Corner Joint Lap Joint 20-40° 90° 75° 75° 15° 15° 30° ST-162 003 / S-0792 OM-253 918 Page 67 SECTION 12 − PARTS LIST . Hardware is common and not available unless listed. 956142881_17-B Figure 12-1. Main Assembly OM-253 918 Page 68 Item No. Dia. Mkgs. Part No. Description Quantity Figure 12-1. Main Assembly ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 . . . . . . . . . . 000207233 . . . . . . . . . . 156034005 . . . . . . . . . . 156034007 . . . . . . . . . +156007044 . . . . . . . . . +156015030 . . . . . . . . . . 056020078 . . . . . . . . . . 156032137 . . . . . . . . . . 156009146 . . . . . . . . . . 656009005 . . . . . . . . . . 656102008 . . . . . . . . . . 556009032 . . . . . . . . . . 156012153 . . . . . . . . . +156122090 . . . . . . . . . . 000155436 . . . . . . . . . . 000176106 . . . . . . . . . . 956142877 . . . . . . . . . . 756069036 . . . . . . . . . . 056020079 . . . . . . . . . . 116039031 . . . . . . . . . . 000178937 . . . PC5 . . 057084174 . . . . . . . . . . 057021025 . . . . . . . . . . 556090045 . . . . . . . . . . 057052052 . . . . . . . . . . 356029245 . . . . . . . . . . 056076270 . . . . . . . . . . 056076271 . . . . . . . . . . 956142876 . . . . . . . . . . 156118081 . . . . . . . . . . 156118079 . . . . . . . . . . . . . . 193919 . . . . . . . . . . 356029244 . . . PC3 . . 057084175 . . . . . . . . . . 156006072 . . . PC2 . . 028069126 . . . PC1 . . 057084176 . . . PC4 . . 057084177 . . . GSV . 056061071 . . . . . . . . . . 156005146 . . . . . . . . . +156118080 . . . . . . . . . . 956142878 . . . . . . . . . . 356029246 . . . . . . . . . . 656089046 . . . . . . . . . . 256071014 . . . . . . . . . . 000220805 . . . . S1 . . 056067281 . . . . . . . . . . 156008044 . . . . . . . . . . 057035022 . . . . . . . . . . 000195585 . . . . . . . . . +156122091 . . . . . . . . . . 000207291 . . . . . . . . . . 656110015 . . . . . . . . . . 057052053 . . . . . . . . . . 256124039 . . . . . . . . . . 956142897 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Label, General Precautionary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Slide Clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hinge, Plastic, 40x40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Panel, LH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Threaded Ring, Spool Holder, 5kg Spool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Handwheel, Reel, w/Ring M8x20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spring 17x2, 6x4sp.L=19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clamp, Holder 17x41 − 4mm Thick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disk Clutch, 20x42 For Holder 5kg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spool Holder c/w Ring 5kg Spool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brass Washer, 8,5x51,5 − 0,7mm Thick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spool Holder Shaft d.50 5kg d.16 L=58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plate, Baffle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Label, Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Label, Moving Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Label, Warning Changing Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Kit, Gas/No Gas Change Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Lobes d.30 Handwheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Box Protection, PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Label, Warning Electric Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit Card, Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wire Drive System, c/w 0.8−1.0 Rolls, 4 Rolls (see Fig. ) . . . . . . . . . . . . . . . Wire Guide, 2x5, L69, Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connector, Mini−Euro, Quick Female, L17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nameplate, MPi 220 Lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dinse, Socket, Female, 25MMQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Receptacle, 2P, Gun Trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nameplate, Mpi 220P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bezel, Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Panel, Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Knob, Pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nameplate, Mpi 220 Upper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit Card, Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit Card, Power Interconnecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit Card, Inverter Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit Card, Motor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Valve, Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Corner Seal, Plastic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Panel, Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rating Plate, Mpi 220P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nameplate, Rear, Mpi 220P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Strain Relief, M 25x1.5, Primary Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Primary Cable, 3 Core 2,5 Mq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nut, Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switch, 40A 600VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spacer, Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fan, 120x120 24VDC c/w Wire Harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Panel RH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Label, Primary Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Foot, Rubber Mount, D.45 H=25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hose, Connector, ⅝” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plug, 2P, TIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Label, Weld Parameters Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 2 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 4 1 1 1 1 4 1 1 1 + When ordering a component originally displaying a precautionary label, the label should also be ordered. To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor. OM-253 918 Page 69 See Drive Roll And Wire Guide Kits . Hardware is common and not available unless listed. 956142881_18-A Figure 12-2. Wire Drive Assembly OM-253 918 Page 70 Item No. Dia. Mkgs. Part No. Description Quantity Figure 12-2. Wire Drive Assembly ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 .... M ... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... 056126081 156018121 556075033 156033035 656003014 156012154 156017161 156018126 156012142 156003035 156012140 156003034 156003039 156019776 356052009 156012155 156023172 156012145 356052010 156019777 156009136 156013050 156033036 156003036 156053112 156019805 756009061 656033010 656021268 156053109 156003037 156013051 156023165 156019779 156090026 156023173 156019806 356052011 156090027 656064004 156032138 156032134 056020075 656033009 356052012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Motor, Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nut, Hex M5, Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cover, Rear, Gear Box Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bushing, d.10x14, Brass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Drive Shaft, Central Gear/Drive Roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Snap Ring, TR.PL AL ES.12 L=54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bearing, d.10x26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nut, Hex M4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pin, d.4x25 SM.0,3x45∅ C40 RETT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Gear, Reducer, D32Z30 D17Z12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pin, d.4x35 SM.0,3x45∅ C40 RETT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Gear, Reducer, D24Z30 D14Z12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Gear, Reducer, D23Z38 D12Z14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Screw, M4x10, Zinc Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Housing, Adapter Gun/Feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Housing, Adapter Gun/Feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O−Ring, 10x16x0,2 DIN 988 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pin, Drive Roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Upper RH Pressure Arm Housing, Die Cast . . . . . . . . . . . . . . . . . . . . . . . . . . Screw, M4x8, Pan Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Washer, d.10,5x4, Brass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Key, Upper Drive Roll Assembly, 3x3 L=15 . . . . . . . . . . . . . . . . . . . . . . . . . . . Bushing, Upper Drive Roll Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Gear, Upper Drive Roll Assembly, d.17x32.5 . . . . . . . . . . . . . . . . . . . . . . . . . . Drive Roll, Upper Pressure Arm Housing, d.17x30 . . . . . . . . . . . . . . . . . . . . . Bolt, M5x25, Through Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Washer, Insulator Drive Assembly Through Bolt . . . . . . . . . . . . . . . . . . . . . . . Thumb Screw, Drive Roll Locator, d. M4x8 . . . . . . . . . . . . . . . . . . . . . . . . . . . O−Ring, d.7,2x1,78 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wire Drive Roll, d.30, See Figure 12-2 and Table 12-1 . . . . . . . . . . . . . . . . . Gear, Lower Drive Roll Assembly d.10x32,5, Drive Roll . . . . . . . . . . . . . . . . Key, Lower Drive Roll Assembly d. 3x3 L=20 . . . . . . . . . . . . . . . . . . . . . . . . . C−Clip, Gear/Shaft, d.10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Screw, M4x4, Wire Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wire Inlet Guide, See Figure 12-2 and Table 12-1 . . . . . . . . . . . . . . . . . . . . . C−Clip, Tension Arm, d.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Screw, M4 Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bracket, Tension Arm Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pin, d.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tension Arm, Pinned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sleeve, d.7x7 Spring Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spring, 10x1.3 L 30, Wire Tensioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Knob, Adjustment Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nut, Locating, Tension Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Upper LH Pressure Arm Housing, Die Cast . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 1 2 2 2 2 1 1 1 2 1 1 3 1 2 2 2 1 4 4 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor. OM-253 918 Page 71 Table 12-1. Drive Roll And Wire Guide Kits . Base selection of drive rolls upon the following recommended usages: 1. 2. 3. 4. V-Grooved rolls for hard wire. U-Grooved rolls for soft and soft shelled cored wires. V-Knurled rolls for hard shelled cored wires. Drive roll types may be mixed to suit particular requirements (example: V-Knurled roll in combination with U-Grooved). Wire Diameter Drive Roll Wire Guide Metric Fraction Decimal Part No. Type 0.6/0.8 mm* 0.023/0.030 in. 0.023/0.030 in. 156053051 V 0.8/1.0 mm* 0.030/0.035 in. 0.030/0.035 in. 156053109 V 1.0/1.2 mm* 0.035/0.045 in. 0.035/0.045 in. 156053052 V 0.8/1.0 mm* 0.030/0.045 in. 0.030/0.035 in. 156053053 U 1.2/1.6 mm* 0.045/0.065 in 0.035/0.065 in 156053054 U 1.0/1.2 mm* 0.035/0.045 in. 0.035/0.045 in. 156053110 V-K Inlet 156090026 *Available in steel 30 mm diameter **Available in nylon 30 mm diameter Notes Work like a Pro! Pros weld and cut safely. Read the safety rules at the beginning of this manual. OM-253 918 Page 72 Effective January 1, 2013 (Equipment with a serial number preface of MD or newer) This limited warranty supersedes all previous Miller warranties and is exclusive with no other guarantees or warranties expressed or implied. LIMITED WARRANTY − Subject to the terms and conditions below, ITW Welding Products Italy warrants to its original retail purchaser that new Miller equipment sold after the effective date of this limited warranty is free of defects in material and workmanship at the time it is shipped by Miller. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS. Within the warranty periods listed below, Miller will repair or replace any warranted parts or components that fail due to such defects in material or workmanship. Miller must be notified in writing within thirty (30) days of such defect or failure, at which time Miller will provide instructions on the warranty claim procedures to be followed. Miller shall honor warranty claims on warranted equipment listed below in the event of such a failure within the warranty time periods. All warranty time periods start on the date the equipment was delivered to the original retail purchaser or one year after the equipment is shipped to a European distributor or eighteen months after the equipment is shipped to an International distributor. 1. 3 Years — Parts and Labor * * * * * * 3. Auto-Darkening Helmet Lenses (No Labor) Migmatic 175 HF Units Water Coolant Systems (EU Models, Non-Integrated) 1 Year — Parts and Labor Unless Specified * * * * * * * * * * * 5. Engine Driven Welding Generators (NOTE: Engines are warranted separately by the engine manufacturer.) Inverter Power Sources (Unless Otherwise Stated) Process Controllers Semi-Automatic and Automatic Wire Feeders Transformer/Rectifier Power Sources Water Coolant System (Integrated) 2 Years — Parts * * * * 4. Original main power rectifiers only to include SCRs, diodes, and discrete rectifier modules with exclusion of STR, Si, STi, STH and MPi series. Automatic Motion Devices Field Options (NOTE: Field options are covered under True Blue® for the remaining warranty period of the product they are installed in, or for a minimum of one year — whichever is greater.) Induction Heating Power Sources, Coolers, and Electronic Controls/Recorders Motor Driven Guns (w/exception of Spoolmate Spoolguns) Positioners and Controllers Powered Air Purifying Respirator (PAPR) Blower Unit (No Labor) Racks Running Gear and Trailers Subarc Wire Drive Assemblies Water Coolant Systems (USA Models, Non-Integrated) Work Stations/Weld Tables (No Labor) 6 Months — Parts * Batteries 90 Days — Parts * Accessory (Kits) * Canvas Covers * Induction Heating Coils and Blankets * MIG Guns * Remote Controls * Replacement Parts (No Labor) * Spoolmate Spoolguns * Cables and Non-Electronic Controls Miller’s True Blue® Limited Warranty shall not apply to: 1. Consumable components; such as contact tips, cutting nozzles, contactors, brushes, switches, slip rings, relays or parts that fail due to normal wear. 2. Items furnished by Miller, but manufactured by others, such as engines or trade accessories. These items are covered by the manufacturer’s warranty, if any. 3. Equipment that has been modified by any party other than Miller, or equipment that has been improperly installed, improperly operated or misused based upon industry standards, or equipment which has not had reasonable and necessary maintenance, or equipment which has been used for operation outside of the specifications for the equipment. 5 Years Parts — 3 Years Labor * 2. 6. MILLER PRODUCTS ARE INTENDED FOR PURCHASE AND USE BY COMMERCIAL/INDUSTRIAL USERS AND PERSONS TRAINED AND EXPERIENCED IN THE USE AND MAINTENANCE OF WELDING EQUIPMENT. In the event of a warranty claim covered by this warranty, the exclusive remedies shall be, at Miller’s option: (1) repair; or (2) replacement; or, where authorized in writing by Miller in appropriate cases, (3) the reasonable cost of repair or replacement at an authorized Miller service station; or (4) payment of or credit for the purchase price (less reasonable depreciation based upon actual use) upon return of the goods at customer’s risk and expense. Miller’s option of repair or replacement will be F.O.B., Factory at ITW Welding Products Group Europe or F.O.B. at a Miller authorized service facility as determined by Miller. Therefore no compensation or reimbursement for transportation costs of any kind will be allowed. TO THE EXTENT PERMITTED BY LAW, THE REMEDIES PROVIDED HEREIN ARE THE SOLE AND EXCLUSIVE REMEDIES. IN NO EVENT SHALL MILLER BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING LOSS OF PROFIT), WHETHER BASED ON CONTRACT, TORT OR ANY OTHER LEGAL THEORY. ANY EXPRESS WARRANTY NOT PROVIDED HEREIN AND ANY IMPLIED WARRANTY, GUARANTY OR REPRESENTATION AS TO PERFORMANCE, AND ANY REMEDY FOR BREACH OF CONTRACT TORT OR ANY OTHER LEGAL THEORY WHICH, BUT FOR THIS PROVISION, MIGHT ARISE BY IMPLICATION, OPERATION OF LAW, CUSTOM OF TRADE OR COURSE OF DEALING, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE, WITH RESPECT TO ANY AND ALL EQUIPMENT FURNISHED BY MILLER IS EXCLUDED AND DISCLAIMED BY MILLER. milan_warr 2013−01 Owner’s Record Please complete and retain with your personal records. Model Name Serial/Style Number Purchase Date (Date which equipment was delivered to original customer.) Distributor Address Country Zip/Postal Code For Service Contact a DISTRIBUTOR or SERVICE AGENCY near you. Always provide Model Name and Serial/Style Number. Contact your Distributor for: Welding Supplies and Consumables Options and Accessories Service and Repair Replacement Parts Owner’s Manuals ITW Welding Italy S.r.l. Contact the Delivering Carrier to: File a claim for loss or damage during shipment. For assistance in filing or settling claims, contact your distributor and/or equipment manufacturer’s Transportation Department. ORIGINAL INSTRUCTIONS − PRINTED IN USA © 2013 Miller Electric Mfg. Co. 2013−01 Via Privata Iseo, 6/E 20098 San Giuliano Milanese, Italy Phone: 39 (0) 2982901 Fax: 39 (0) 298290-203 email: miller@itw−welding.it
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