Hobart Welding Products OM-945 194 047U manual Generator Power Guidelines, Selecting Equipment

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SECTION 12 − GENERATOR POWER GUIDELINES

NOTE

The views in this section are intended to be representative of all engine-driven welding generators. Your unit may differ from those shown.

12-1. Selecting Equipment

1 Generator Power Receptacles

− Neutral Bonded To Frame

2 3-Prong Plug From Case

Grounded Equipment

3 2-Prong Plug From Double

Insulated Equipment

Y Do not use 2-prong plug un- less equipment is double in- sulated.

1

2

 

3

OR

Be sure equipment

has this symbol

 

 

and/or wording.

gen_pwr 11/02 − Ref. ST-159 730 / ST-800 577

12-2. Grounding Generator To Truck Or Trailer Frame

1

GND/PE2

3

Electrically bond generator frame to vehicle frame by metal-to-metal contact.

YBed liners, shipping skids, and some running gear insulate the welding generator from the ve- hicle frame. Always connect a ground wire from the generator equipment grounding terminal to bare metal on the vehicle frame as shown.

YAlways ground generator frame to vehicle frame to pre- vent electric shock and static electricity hazards.

1Equipment Grounding Terminal (On Front Panel)

2Grounding Cable (Not Supplied)

3Metal Vehicle Frame

Connect cable from equipment ground terminal to metal vehicle frame. Use #10 AWG or larger insulated copper wire.

YIf unit does not have GFCI re- ceptacles, use GFCI-pro- tected extension cord.

S-0854

OM-945 Page 38

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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