Hobart Welding Products OM-945 manual Operating the Welding Generator, Front Panel Controls

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SECTION 6 − OPERATING THE WELDING GENERATOR

NOTE

If the unit is extremely overloaded, weld and generator power will stop. Turn unit off and restart to reset the generator protection circuit and restore weld generator power output.

If the rated output of the unit is exceeded, engine speed may vary rapidly until the weld or generator load is reduced.

6-1. Front Panel Controls

 

 

 

 

1

4

2

3

 

1 Engine Control Switch

Use switch to start engine, select speed, and stop engine. In Run/Idle position, engine runs at idle speed at no load, and weld/power speed under load. In Run position, engine runs at weld/power speed.

2 Engine Choke Control

Use control to change engine air-fuel mix.

To Start: pull out choke and turn Engine Con- trol switch to Start position. Release switch and slowly push choke in when engine starts.

.If the engine does not start, let the engine

come to a complete stop before attempt- ing restart.

.During cold weather some gasoline en-

gines encounter difficulties that are easily remedied. See Section 6-2and 10-1.

Ref.226 427-A

To Stop: turn Engine Control switch to Off position.

3Engine Hour Meter

4Amperage Control

Use control to select weld amperage. Select amperage according to electrode being used (see Section 6-3). Control may be adjusted while welding. Control does not affect gener- ator power output.

OM-945 Page 18

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Contents Processes DescriptionFrom Hobart to You Table of Contents Options and Accessories Warranty 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’ouïeLE Surchauffement peut endom- mager le moteur électrique ’AIR Comprimé peut provoquer des blessures’EMPLOI Excessif peut LES Étincelles Volantes risquent de provoquer des blessuresPour les moteurs diesel LE Soudage À L’ARC risque de provoquer des interférencesPour les moteurs à essence En ce qui concerne les stimulateurs cardiaquesWeld, Power, and Engine Specifications − SpecificationsSymbol Definitions − DefinitionsDimensions, Weights, and Operating Angles Generator Power CurveFuel Consumption All Models Duty CycleMaterial Thickness Reference Chart Volt-Ampere CurvesVehicle frame. Always connect a ground wire − InstallationInstalling Welding Generator MountingFuel Engine Prestart Checks Robin-Powered UnitsEngine Prestart Checks Kohler-Powered Units OilDo not overfill battery cells Activating The Dry Charge Battery If ApplicableConnecting the Battery Connect negative −Installing Exhaust Pipe Weld Output TerminalsConnecting To Weld Output Terminals Selecting Weld Cable Sizes− Operating the Welding Generator Front Panel ControlsInfrequently Cold Weather Engine OperationAmperage Selection Table For Stick Smaw Electrodes Loaded− Operating Auxiliary Equipment Standard ReceptaclesOptional Generator Power Receptacles Gfci Receptacle OptionCurrent Available in Amperes 240 Receptacle− Maintenance ROBIN-POWERED Units Routine Maintenance Robin-Powered UnitsMaintenance Label Robin-Powered Units Servicing Air Cleaner Robin−Powered Units Stop engine. Disconnect nega- tive − battery cable Overload Protection Robin-Powered UnitsServicing Optional Spark Arrestor Robin-Powered Units Stop engine and let coolFull Tools Needed Idle Speed Adjustment Adjusting Engine Speed Robin-Powered UnitsWeld/Power Speed Adjustment − Maintenance − KOHLER-POWERED Units Routine Maintenance Kohler-Powered UnitsMaintenance Label Kohler-Powered Units Servicing Air Cleaner Kohler−Powered Units Overload Protection Kohler-Powered Units Servicing Optional Spark Arrestor Kohler-Powered Units802 339-G / S-0842 Adjusting Engine Speed Kohler-Powered Units Stop engine. Reinstall wrapperGenerator Power − TroubleshootingTroubleshooting WeldingEngine Work like a Pro − Electrical Diagram Selecting Equipment − Generator Power GuidelinesGrounding 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 AmperesWeld current starts when electrode touches work- piece Stick Welding Procedure− Stick Welding Smaw Guidelines Striking an Arc − Scratch Start Technique Electrode and Amperage Selection ChartStriking an Arc − Tapping Technique Good Weld Bead Characteristics Poor Weld Bead CharacteristicsPositioning Electrode Holder Conditions That Affect Weld Bead Shape Electrode Movement During WeldingLap Joint Butt JointsTee Joint Weld Test Troubleshooting − PorosityTroubleshooting − Excessive Spatter Possible Causes Corrective ActionsTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Excessive Penetration Troubleshooting − Waviness Of Bead Troubleshooting − Burn-ThroughTroubleshooting − Distortion − Parts List Main Assembly Robin Engine ShownMain Assembly Panel, Front w/Components Panel, Front w/Components -1Item Generator -1Item Support ServiceAssistance Contact your Distributor for Hobart Welding Products
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