Miller Electric Big Blue 302P, Big Blue 452P manual Symbol Usage, Arc Welding Hazards

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SECTION 1 − SAFETY PRECAUTIONS − READ BEFORE USING

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

1-1. Symbol Usage

Means Warning! Watch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols.

YMarks a special safety message.

.Means “Note”; not safety related.

This group of symbols means Warning! Watch Out! possible 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

YThe 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 Stan- dards listed in Section 1-7. Read and follow all Safety Standards.

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 work- table as near the weld as practical.

YOnly qualified persons should install, operate, maintain, and re- pair this unit.

YDuring operation, keep everybody, especially children, away.

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.

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 following electri- cally 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 present- ed: 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!

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 conductor first − double-check connections.

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 sep- arate cable.

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

SIGNIFICANT DC VOLTAGE exists in inverters after stop- ping engine.

DStop engine on inverter and discharge input capacitors according to instructions in Maintenance Section before touching any parts.

FUMES AND GASES can be hazardous.

Welding produces fumes and gases. Breathing these fumes and gases can be hazardous to your health.

DKeep your head out of the fumes. Do not breathe the fumes.

DIf inside, ventilate the area and/or use exhaust at the arc to remove welding fumes and gases.

DIf ventilation is poor, use an approved air-supplied respirator.

DRead the Material Safety Data Sheets (MSDSs) and the manufacturer’s instructions for metals, consumables, coatings, cleaners, and degreasers.

DWork 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.

DDo 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.

DDo 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 if necessary, while wearing an air-supplied respirator. The coatings and any metals containing these elements can give off toxic fumes if welded.

BUILDUP OF GAS can injure or kill.

D Shut off shielding gas supply when not in use.

DAlways ventilate confined spaces or use approved air-supplied respirator.

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.

DWear a welding helmet fitted with a proper shade of filter 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).

DWear approved safety glasses with side shields under your helmet.

DUse protective screens or barriers to protect others from flash and glare; warn others not to watch the arc.

DWear protective clothing made from durable, flame-resistant material (wool and leather) and foot protection.

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Contents Processes OM-496Description From Miller to You Table of Contents 11-2 11-111-3 Standards DirectivesDeccon1 11/02 Deccon1 5/98 Sound Level InformationArc Welding Hazards Symbol UsageEngine Hazards Compressed Air Hazards Radiation can cause interference Principal Safety StandardsCalifornia Proposition 65 Warnings EMF InformationLES Fumées ET LES GAZ peuvent être dangereux Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation UN Choc Électrique peut tuerLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un in- cendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures graves’AIR Comprimé peut provoque r des blessures ’EXPLOSION DE LA Batterie peutDES Organes Mobiles peuvent provoquer des blessures LA Chaleur DU Moteur peut pro- voquer un incendieInformation sur les champs électromagnétiques Principales normes de sécurité− Definitions Starting Instructions + −Engine Are possible hazards asHot muffler and exhaust pipes Can cause severe burns. DoReturn To Table Of Contents CC Models CC/CV Models Manufacturer’s Rating Labels For CE Products− 50 h Std StdSymbols And Definitions Weld, Power, And Engine Specifications − SpecificationsDimensions, Weights, And Operating Angles Volt-Ampere Curves For CC Models Volt-Ampere Curves For CC/CV Models Stick ModeMIG Mode TIG ModeDuty Cycle And Overheating Fuel Consumption15 kVA/kW Three-Phase AC Output No Weld Load AC Generator Power CurveOptional Three-Phase Generator Curves 12 kVA/kW Single-Phase AC Output No Weld LoadAirflow Clearance − InstallationInstalling Welding Generator See Sections 5-2And Location GroundingWork like a Pro Using Lifting EyeTo Bolt Unit In Place Mounting Welding GeneratorSupporting The Unit Mounting SurfaceStop engine and let cool Installing Exhaust PipeCharger Activating The Dry Charge Battery If ApplicableWhen electrolyte is low, add Read and follow all instrucReinstall cover after connecting battery Connecting The BatteryConnect Negative − Cable Last Engine Prestart Checks Coolant Recovery TankSelecting Weld Cable Sizes Connecting To Weld Output TerminalsRef 862-A / 048 720-K / 802 Socket Connecting To Remote 14 Receptacle RC14 On CC/CV ModelsFront Panel Controls For CC Models See Section − Operating Welding Generator − CC ModelsEngine Starting Controls To Start Do not use ether. Using ether voids warrantyEngine Indicator Lights Do not switch under loadSet weld controls as shown to Remote Amperage Control On CC Models OptionalWeld Control/Arc Condition Information Label Example Combination Remote Amperage Control StickReturn To Table Of Contents Front Panel Controls For CC/CV Models See Section − Operating Welding Generator − CC/CV ModelsVoltage/Amperage Adjust Switch And Remote 14 Receptacle Use switch to select weld amperage rangeProcess/Contactor Switch Settings Process/Contactor Switch On CC/CV ModelsExample Combination Remote Amperage Control TIG Remote Voltage/Amperage Control On CC/CV Models OptionalOpen, contact Factory Autho − Operating Auxiliary EquipmentVolt And 240 Volt Receptacles At least once a month, run enRear Of Panel Three-Phase Power ConnectionClose panel opening if no connections are made to generator 240 V 15 a AC South African Receptacle RC1 Optional Generator Power ReceptaclesCircuit Breaker CB2 Circuit Breaker CB3 Maintenance Labels − Maintenance & TroubleshootingFor Non-CE Products Every 100 h Routine MaintenanceEvery 8 h Every 50 hChange Fuel Clean/Set InjectorsEvery 1000 h Every 2000 hDo not clean housing with air hose Servicing Air CleanerBy the warranty To clean air filterReinstall cleanout plug Tools Needed Inspecting And Cleaning Optional Spark Arrestor MufflerClose door Tools Needed 10 mm Adjusting Engine Speed On Standard ModelsMaximum Do not set engine speed higher than specifiedRpm max 61.6 Hz 1250 rpm 41.6 Hz Idle Speed AdjustmentWeld/Power Speed Adjustment Engine Speed No LoadServicing Fuel And Lubrication Systems Overload Protection Down before operating Diagnosing Causes Of Engine Fault ShutdownsDiagnostic Checks While Running Correct the cause of the shutWelding − CC Models TroubleshootingWelding − CC/CV Models Optional Three-Phase Generator Power CC/CV Models Only Standard Generator PowerEngine Air in fuel system. See engine manual Wiring harness and componentsShutdown switch is released Out Temperature is too high see Sections 5-7andReturn To Table Of Contents Circuit Diagram For CC Welding Generator − Electrical Diagrams215 296-B Circuit Diagram For CC/CV Welding Generator 215 297-B Wetstacking − RUN-IN ProcedureMent damage may occur From flammables Do not Perform Run-In Procedure Using Load BankProcedure at less than Stop engine Do not touch hot exhaustDo not perform run-in Run-In Procedure Using Resistance GridBank/grid From flammablesGrounding Generator To Truck Or Trailer Frame − Generator Power GuidelinesHas this symbol Selecting EquipmentUse ground device as stated in electrical codes Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Earth ground if supplyingFarm/Home Equipment Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Industrial Motors Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentKVA/HP x HP x Power Required To Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting RequirementsTypical Connections To Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord Possible109 111 -4 or − Parts List85 Fig 118Dia Part Mkgs Description Quantity 209 Figures 13-2 Control Box Assembly − CC Models PLG3 Control Box Assembly − CC/CV Models PC7 195 Panel, Front w/Components − CC Models RC13 032 41 40 Panel, Front w/Components − CC/CV ModelsPanel, Front w/Components − CC/CV Models -1Item PC4, PC5 189 Generator -1Item Generator602 SCREW, .312−18x .75 hexwhd.66d stl pld slffmg tap−rw 601 Main Rectifier Assembly Page Page Your distributor also gives ServiceSupport Transportation Department Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s
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