Hobart Welding Products 125 manual Symbol Usage, Arc Welding Hazards, Electric Shock can kill

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SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING

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Protect yourself and others from injury — read and follow these precautions.

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 ex- plained in the text.

NOTICE − Indicates statements not related to personal injury.

1-2. Arc Welding Hazards

.Indicates special instructions.

This group of symbols means Warning! Watch Out! ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards. Consult sym- bols and related instructions below for necessary actions to avoid the 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.

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.

DDo not touch live electrical parts.

DWear dry, hole-free insulating gloves and body protection.

DInsulate yourself from work and ground using dry insulating mats or covers big enough to prevent any physical contact with the work or ground.

DDo not use AC output in damp areas, if movement is confined, or if there is a danger of falling.

DUse AC output ONLY if required for the welding process.

DIf AC output is required, use remote output control if present on unit.

DAdditional safety precautions are required when any of the follow- ing 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 unavoid- able 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 volt- age. In most situations, use of a DC, constant voltage wire welder is recommended. And, do not work alone!

DDisconnect 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).

DProperly install and ground this equipment according to its Owner’s Manual and national, state, and local codes.

DAlways 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.

DWhen making input connections, attach proper grounding conduc- tor first − double-check connections.

DKeep cords dry, free of oil and grease, and protected from hot metal and sparks.

DFrequently inspect input power cord for damage or bare wiring − replace cord immediately if damaged − bare wiring can kill.

DTurn off all equipment when not in use.

DDo not use worn, damaged, undersized, or poorly spliced cables.

DDo not drape cables over your body.

DIf earth grounding of the workpiece is required, ground it directly with a separate cable.

DDo not touch electrode if you are in contact with the work, ground, or another electrode from a different machine.

DDo not touch electrode holders connected to two welding ma- chines at the same time since double open-circuit voltage will be present.

DUse only well-maintained equipment. Repair or replace damaged parts at once. Maintain unit according to manual.

DWear a safety harness if working above floor level.

DKeep all panels and covers securely in place.

DClamp work cable with good metal-to-metal contact to workpiece or worktable as near the weld as practical.

DInsulate work clamp when not connected to workpiece to prevent contact with any metal object.

DDo not connect more than one electrode or work cable to any single weld output terminal.

SIGNIFICANT DC VOLTAGE exists in inverter weld- ing power sources AFTER removal of input power.

DTurn Off inverter, disconnect input power, and discharge input capacitors according to instructions in Maintenance Section before touching any parts.

HOT PARTS can burn.

DDo not touch hot parts bare handed.

DAllow cooling period before working on equip-

ment.

DTo handle hot parts, use proper tools and/or wear heavy, insulated welding gloves and clothing to prevent burns.

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Contents File Flux Cored Fcaw ProcessesDescription Protect Your Investment From Hobart to YouTable of Contents 10-2 10-1Arc Welding Hazards Symbol UsageElectric Shock can kill HOT Parts can burnARC Rays can burn eyes and skin Fumes and Gases can be hazardousWelding can cause fire or explosion Flying Metal or Dirt can injure eyesFire or Explosion hazard Welding Wire can injureFalling Equipment can injure Moving Parts can injureCalifornia Proposition 65 Warnings Principal Safety StandardsEMF Information About Implanted Medical DevicesIndique des instructions spécifiques Symboles utilisésUNE Décharge Électrique peut entraîner la mort LE Soudage peut provoquer un incendie ou une explosion LES Pièces Chaudes peuvent provoquer des brûluresLES Fumées ET LES GAZ peuvent être dangereux LES Bouteilles peuvent exploser si elles sont endommagées LE Bruit peut endommager l’ouïeRisque D’INCENDIE OU LA Chute DE L’ÉQUIPEMENT peut provoquer des blessuresLes Pièces Mobiles peuvent causer des blessures Proposition californienne 65 AvertissementsLES Fils DE Soudage peuvent provoquer des blessures LE Soudage À L’ARC risque de provoquer des interférencesEn ce qui concerne les implants médicaux Principales normes de sécuritéInformations relatives aux CEM OM-947 Symbols And Definitions − SpecificationsSpecifications − DefinitionsDuty Cycle And Overheating WarrantyVolt-Ampere Curves Can damage unit or gun and voidSlide insulating grips over handles Tools Needed OM-947 − InstallationInstalling Work Clamp Changing Polarity Process/Polarity TableTools Needed 11/16, 1-1/8 Shielding Gas Installing Gas SupplyOptional hub kit Installing Wire Spool And Adjusting Hub TensionOnly applies to units equipped with Make this installation Selecting a Location And Connecting 115 Volt Input PowerSerial Number And Rating Label Location SectionTurn off welding power source Installing Contact Tip And NozzleHold wire tightly to keep it from unraveling Threading Welding WireControls − OperationOperating The Gun LoadWeld Parameter Chart Routine Maintenance − Maintenance &TROUBLESHOOTINGOverload Protection Drive Motor ProtectionRetaining Knob Opening Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip Turn Off power before replacing contact tipHold wire tightly to keep it Cleaning Gun LinerThread wire according to From unraveling. SecureReplacing Gun Liner Remove black sleeving from end of replacement linerTools Needed Head Tube Mm / 10 mm Tube. Separate gun handle halves10 mm Secure power cord plug in receptacle see Section Troubleshooting TablePower source see Section Trouble RemedyCircuit Diagram − Electrical DiagramTypical Gmaw MIG Process Connections − FCAW/GMAW Welding GuidelinesTypical Fcaw Process Connections Wire Size Amperage Range Typical Control SettingsAmperage Select VoltageEnd View of Work Angle Holding And Positioning Welding GunSlow Normal Conditions That Affect Weld Bead ShapeShort Normal Long Gun Movement During Welding Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Incomplete Fusion Troubleshooting − Excessive PenetrationTroubleshooting − Lack Of Penetration Troubleshooting − Waviness Of Bead Troubleshooting − Burn-ThroughTroubleshooting − Distortion Base metal to moveCommon Gmaw MIG Shielding Gases Troubleshooting Guide For Semiautomatic Welding EquipmentApplication FilletOpen gas valve at cylinder and adjust flow rate Gas nozzle plugged Clean or replace gas nozzleGas hose in gun and cable assembly Loose or broken wires to gas solenoidAccessories − ACCESSORIES/CONSUMABLESConsumables PkgMaterial Thickness Reference Chart Work like a Pro Assistance ServiceSupport Hobart Welding Products Contact your Distributor for
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