Hobart Welding Products OM-945 194 047U manual Engine Hazards

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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.

DProtect yourself and others from flying sparks and hot metal.

DDo not weld where flying sparks can strike flammable material.

DRemove all flammables within 35 ft (10.7 m) of the welding arc. If this is not possible, tightly cover them with approved covers.

DBe alert that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas.

DWatch for fire, and keep a fire extinguisher nearby.

DBe aware that welding on a ceiling, floor, bulkhead, or partition can cause fire on the hidden side.

DDo not weld on closed containers such as tanks, drums, or pipes, unless they are properly prepared according to AWS F4.1 (see Safety Standards).

DConnect 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 and fire hazards.

DDo not use welder to thaw frozen pipes.

DRemove stick electrode from holder or cut off welding wire at contact tip when not in use.

DWear oil-free protective garments such as leather gloves, heavy shirt, cuf- fless trousers, high shoes, and a cap.

DRemove any combustibles, such as a butane lighter or matches, from your person before doing any welding.

DFollow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B for hot work and have a fire watcher and extinguisher nearby.

FLYING METAL can injure eyes.

DWelding, chipping, wire brushing, and grinding cause sparks and flying metal. As welds cool, they can throw off slag.

DWear approved safety glasses with side shields even under your welding helmet.

HOT PARTS can cause severe burns.

DAllow cooling period before maintaining.

D Wear protective gloves and clothing when working on a hot engine.

DDo not touch hot engine parts or just-welded parts bare-handed.

NOISE can damage hearing.

Noise from some processes or equipment can damage hearing.

DWear approved ear protection if noise level is high.

MAGNETIC FIELDS can affect pacemakers.

D Pacemaker wearers keep away.

D Wearers should consult their doctor before going near arc welding, gouging, or spot welding opera- tions.

CYLINDERS can explode if damaged.

Shielding 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.

DProtect compressed gas cylinders from excessive heat, mechanical shocks, slag, open flames, sparks, and arcs.

DInstall cylinders in an upright position by securing to a stationary support or cylinder rack to prevent falling or tipping.

DKeep cylinders away from any welding or other electrical circuits.

DNever drape a welding torch over a gas cylinder.

DNever allow a welding electrode to touch any cylinder.

DNever weld on a pressurized cylinder — explosion will result.

DUse only correct shielding gas cylinders, regulators, hoses, and fittings de- signed for the specific application; maintain them and associated parts in good condition.

DTurn face away from valve outlet when opening cylinder valve.

DKeep protective cap in place over valve except when cylinder is in use or connected for use.

DRead and follow instructions on compressed gas cylinders, associated equipment, and CGA publication P-1 listed in Safety Standards.

1-3. Engine Hazards

BATTERY EXPLOSION can BLIND.

DAlways wear a face shield, rubber gloves, and protec-

tive clothing when working on a battery.

D Stop engine before disconnecting or connecting bat- tery cables or servicing battery.

DDo not allow tools to cause sparks when working on a battery.

DDo not use welder to charge batteries or jump start vehicles.

DObserve correct polarity (+ and −) on batteries.

DDisconnect negative (−) cable first and connect it last.

FUEL can cause fire or explosion.

D Stop engine and let it cool off before checking or add- ing fuel.

DDo not add fuel while smoking or if unit is near any sparks or open flames.

DDo not overfill tank — allow room for fuel to expand.

DDo not spill fuel. If fuel is spilled, clean up before starting engine.

DDispose of rags in a fireproof container.

DAlways keep nozzle in contact with tank when fueling.

OM-945 Page 2

MOVING PARTS can cause injury.

D Keep away from fans, belts, and rotors.

D Keep all doors, panels, covers, and guards closed and securely in place.

DStop engine before installing or connecting unit.

DHave only qualified people remove guards or covers for maintenance and troubleshooting as necessary.

DTo prevent accidental starting during servicing, disconnect negative (−) battery cable from battery.

DKeep hands, hair, loose clothing, and tools away from moving parts.

DReinstall panels or guards and close doors when servicing is finished and before starting engine.

DBefore working on generator, remove spark plugs or injectors to keep engine from kicking back or starting.

DBlock flywheel so that it will not turn while working on generator compo- nents.

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Contents Processes DescriptionFrom Hobart to You Table of Contents Table of Contents Symbol Usage Arc Welding HazardsEngine Hazards Compressed Air Hazards EMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings Radiation can cause interferenceUN Choc Électrique peut tuer Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation LES Fumées ET LES GAZ peuvent être dangereuxDES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer un in- cendie ou une explosionDES Particules Volantes peuvent blesser les yeux LE Bruit peut affecter l’ouïeLA Chaleur DU Moteur peut pro- voquer un incendie ’EXPLOSION DE LA Batterie peutDES Organes Mobiles peuvent provoquer des blessures ’AIR Comprimé peut provoquer des blessuresPrincipales normes de sécurité Information sur les champs électromagnétiquesWeld, Power, and Engine Specifications − SpecificationsSymbol Definitions − DefinitionsDimensions, Weights, and Operating Angles Generator Power CurveDo not move or operate unit where it could tip Fuel Consumption All Models Duty CycleMaterial Thickness Reference Chart Volt-Ampere Curves− Installation Installing Welding GeneratorFuel Engine Prestart Checks Onan-Powered UnitsEngine Prestart Checks Kohler-Powered Units OilRead and follow all instruc Activating The Dry Charge Battery If ApplicableDo not overfill battery cells Charger+ − Connecting the BatteryInstalling Exhaust Pipe Connect negative − cable last45 m 60 m 70 m 90 m 105 m 120 m Connecting to Weld Output TerminalsSelecting Weld Cable Sizes Put terminalsAmperage Selection Table For Stick Smaw Electrodes − Operating the Welding Generator Front Panel Controls− Operating Auxiliary Equipment Standard ReceptaclesCeptacles, use Optional Generator Power Receptacles Wiring Optional 240 Volt Plug− Maintenance ONAN-POWERED Units Maintenance Label Onan-Powered Units Every 500 hEvery 1000 h Servicing Air Cleaner Onan-Powered Units Stop engineStop engine. Disconnect nega- tive − battery cable Overload Protection Onan-Powered UnitsServicing Optional Spark Arrestor Onan-Powered Units Stop engine and let coolFull Tools Needed Adjusting Engine Speed Onan-Powered Units Idle Speed AdjustmentWeld/Power Speed Adjustment Routine Maintenance Kohler-Powered Units Every 20 hEvery 25 h Replace unreadable labels Maintenance Label Kohler-Powered Units Servicing Air Cleaner Kohler-Powered Units Overload Protection Kohler-Powered Units Servicing Optional Spark Arrestor Kohler-Powered Units802 339-B / S-0842 Adjusting Engine Speed Kohler-Powered Units Stop engine. Reinstall wrapperGenerator Power − TroubleshootingTroubleshooting WeldingEngine − Electrical Diagram − Generator Power Guidelines Selecting EquipmentGrounding Generator To Truck Or Trailer Frame Earth ground if supplying Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Amperes x Volts = WattsIndustrial Motors Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsSingle-Phase Induction Motor Starting Requirements Power Required To Start MotorHow Much Power Can Generator Supply? KVA/HP x HP x 1000 = Starting AmperageTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Current Load Watts AmperesStick Welding Procedure Weld current starts when electrode touches work- piece− Stick Welding Smaw Guidelines Electrode and Amperage Selection Chart Striking an Arc − Scratch Start TechniqueStriking an Arc − Tapping Technique Poor Weld Bead Characteristics Good Weld Bead CharacteristicsPositioning Electrode Holder Conditions That Affect Weld Bead Shape Electrode Movement During WeldingButt Joints Lap JointTee Joint Weld Test Troubleshooting − PorosityTroubleshooting − Excessive Spatter Possible Causes Corrective ActionsTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Excessive Penetration Troubleshooting − Burn-Through Troubleshooting − Waviness Of BeadTroubleshooting − Distortion OM-945 − Parts List Main Assembly Onan Engine ShownMain Assembly Panel, Front w/Components Panel, Front w/Components -1Item Generator -1Item Service SupportContact your Distributor for Hobart Welding Products