Hobart Welding Products OM-240 438E manual Overload Protection, Servicing Optional Spark Arrestor

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. A complete Parts List is available at wwwHobartWelders.com

8-6. Overload Protection

21

.Fuses F1, F2 located on

bracket behind left side panel.

3

.Fuse F6 located in

harness behind left side door.

! Stop engine. Disconnect negative (−) battery cable.

1 Fuse F1 (See Section 10-1)

F1 protects the weld excitation winding from overload. If F1 opens, weld output stops or is low.

2 Fuse F2 (See Section 10-1)

F2 protects the generator power excitation winding from overload. If F2 opens, generator power output stops or is low.

3 Fuse F6 (See Section 10-1)

F6 protects the engine wiring sys- tem from overload. If F6 opens, engine will not crank.

Replace any open fuses. Reinstall cover before operating.

.If a fuse opens, it usually indi-

cates a more serious problem exists. Contact a Factory Au- thorized Service Agent.

Tools Needed:

3/8 in.

244 029-A

8-7. Servicing Optional Spark Arrestor

! Stop engine and let cool.

1 Spark Arrestor Screen

Clean and inspect screen. Replace spark arrestor if screen wires are broken or missing.

1

Tools Needed:

1/4 in.

244 029-A / Ref. 801 682-A

OM-240 438 Page 38

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Contents OM-240 438E ProcessesDescription From Hobart to You Protect Your InvestmentTable of Contents 10-1 Electric Shock can kill Symbol UsageArc Welding Hazards HOT Parts can burnARC Rays can burn eyes and skin Fumes and Gases can be hazardousBuildup of GAS can injure or kill Welding can cause fire or explosionEngine Hazards Hydraulic Equipment can injure or kill Hydraulic HazardsCompressed Air Hazards Hydraulic Fluid can injure or killOverheating can damage motors Compressed AIR can injure or killFire or Explosion hazard Falling Equipment can injureCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Implanted Medical Devices UN Choc Électrique peut tuer Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation Indique des instructions spécifiquesLE Soudage peut provoquer un incendie ou une explosion LES Pièces Chaudes peuvent provoquer des brûluresLES Fumées ET LES GAZ peu- vent être dangereux LE Bruit peut affecter l’ouïe’EXPLOSION DE LA Batterie peut provoquer des blessures Les Pièces Mobiles peuvent causer des blessuresLES Étincelles À L’ÉCHAPPEMENT peuvent provoquer un incendie LA Chaleur DU Moteur peut pro- voquer un incendieLire LES Instructions LE Surchauffement peut endommager le moteur électrique Risque D’INCENDIE OULA Chute DE L’ÉQUIPEMENT peut provoquer des blessures LES Étincelles Projetées peuvent provoquer des blessuresProposition californienne 65 Avertissements UNE Remorque QUI Bascule peut provoquer des blessuresLE Soudage À L’ARC risque de provoquer des interférences Principales normes de sécurité Informations relatives aux CEMEn ce qui concerne les implants médicaux Weld, Power, and Engine Specifications − SpecificationsSymbol Definitions − DefinitionsDimensions, Weights, And Operating Angles Weight 562 lb 254 kgDuty Cycle Dimensions For Units With Optional Running GearDimensions Duty CycleFor CC/AC Mode For CC/DC ModeVolt-Ampere Curves Generator Power Curve Fuel ConsumptionSerial Number And Rating Label Location − InstallationInstalling Welding Generator Movement Location / Airflow ClearanceGrounding Generator To Truck Or Trailer Frame GND/PEEngine Prestart Checks OilConnect negative − battery cable last Installing Exhaust PipeConnecting Or Replacing the Battery + −Connecting To Weld Output Terminals Stop engine Failure to properly connectTools Needed 3/4 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Selecting Weld Cable Sizes150 ft 200 ft 250 ft 100 150 200 250Start Your Professional Welding Career Now Front Panel Controls Engine Control Switch− Operating the Welding Generator Fine ControlLoaded Cold Weather Engine OperationInfrequently Frequently LoadedTypical Stick Welding Connections And Control Settings Stop engineElectrode Gfci Receptacle Option − Operating Auxiliary EquipmentStandard Receptacles At least once a month, run engine atCurrent Available in Amperes 240 Simultaneous Weld And PowerWiring Optional 240 Volt Plug Receptacle− Maintenance Maintenance Label200 Routine Maintenance100 500Servicing Air Cleaner Close valve and valve cap Changing Engine Oil, Oil Filter, and Fuel FilterStop engine and let cool Before Adding Oil Running engineWeld/Power Speed Adjustment Adjusting Engine SpeedIdle Speed Adjustment Turn idle speed screw for fine ad- justmentsServicing Optional Spark Arrestor Stop engine. Disconnect negative − battery cableOverload Protection Fuse F1 See SectionGenerator Power Troubleshooting − TroubleshootingWelding Troubleshooting Trouble RemedyErs SR2 and SR3 Engine TroubleshootingCheck receptacle wiring and connections Check fuel levelRecommended Spare Parts − Parts ListControl switch S2, and throttle solenoid TS1 Recommended Spare Parts− Electrical Diagrams Circuit Diagram For Welding Generator240 424-B − Generator Power Guidelines Selecting EquipmentUse ground device as stated Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Electrical codesIndustrial 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 / Volts = Starting AmperageTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Weld current starts when Stick Welding Procedure− Stick Welding Smaw Guidelines Electrode touches workScratch Technique Electrode and Amperage Selection ChartStriking an Arc Tapping TechniquePositioning Electrode Holder Poor Weld Bead CharacteristicsGood Weld Bead Characteristics End View Of Work Angle Side View Of Electrode Angle 10-30Electrode Angle Conditions That Affect Weld Bead ShapeElectrode Movement During Welding NormalTee Joint Groove Butt JointsLap Joint Or LessPossible Causes Corrective Actions TroubleshootingWeld Test Weld beadMetal remains Lack of Penetration Good PenetrationGood Penetration Excessive Penetration DirectionSOCKET/WRENCH Selection Table Standard Metric Service SupportAssistance Contact your Distributor for Hobart Welding Products