Hobart Welding Products Volt-Ampere Curves, Voltage, 15.0, 10.0 100 110 120 130 140 150 160

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4-3. Volt-Ampere Curves

The volt-ampere curves show the minimum and maximum voltage and amperage output capabilities of the welding power source. Curves of other settings fall between the curves shown.

	30.0
	25.0
	20.0
Voltage															RANGE4
	15.0														RANGE3
													RANGE2
													RANGE2
												RANGE1
	10.0
	5.0
	0.0	10	20	30	40	50	60	70	80	90	100	110	120	130	140	150	160
	0	10	20	30	40	50	60	70	80	90	100	110	120	130	140	150	160
									Amperage

ssb1.1 10/91 − 217 624-A

OM-925 Page 11

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Contents OM-925 ProcessesDescription From Hobart to You Table of Contents − ACCESSORIES/CONSUMABLES − MIG Welding Gmaw GuidelinesTypical MIG Process Connections Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers UNE Décharge Électrique peut entraîner la mort LES Fumées ET LES GAZ peuvent être dangereuxIndique un message de sécurité particulier LE Bruit peut endommager l’ouïe LE Soudage peut provoquer un incendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut SUREn ce qui concerne les stimulateurs cardiaques Boulevard, Rexdale, Ontario, Canada M9W 1R3 téléphone− Definitions − SpecificationsSymbols And Definitions SpecificationsExceeding duty cycle can WarrantyDuty Cycle And Overheating Output Duty Cycle %10.0 100 110 120 130 140 150 160 Volt-Ampere CurvesVoltage 15.0Drive assembly. Tighten thumbscrew − InstallationInstalling Welding Gun Installing Work ClampChanging Polarity Process/Polarity TableCO2 gas regulator/flowmeter Installing Gas SupplyDo not move or operate unit Where it could tip Selecting a Location And Connecting Input PowerAlign locking hole in spool with locking pin on spool hub Installing Wire Spool And Adjusting Hub TensionInstalling Contact Tip And Nozzle Turn off welding power sourceUse with solid or flux cored wire Lay gun cable out straight Threading Welding WireTighten Pressure Indicator ScaleSource or -2. Do not switch under load − OperationControls Material Thickness Reference Chart Weld Parameter Chart 217 618-A Overload Protection Drive Motor Protection − Maintenance & TroubleshootingRoutine Maintenance Disconnect powerTools Needed 030/.035 Groove Changing Drive Roll Or Wire Inlet GuideTurn Off power before replacing contact tip Replacing Gun Contact TipCleaning Or Replacing Gun Liner Disconnect gun from unitTo Reassemble Gun Replacing Switch And/Or Head Tube Remove handle locking nut Secure head tube in viceSlide handle Trouble Remedy Troubleshooting TableCircuit Diagram − Electrical DiagramTypical MIG Process Connections − MIG Welding Gmaw GuidelinesSelect Voltage Typical MIG Process Control SettingsWire Size Amperage Range Thickness to Amperage aHolding And Positioning Welding Gun Short Normal Long Conditions That Affect Weld Bead ShapePush Perpendicular DragPoor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Troubleshooting − Waviness Of Bead Troubleshooting − DistortionWeld bead Troubleshooting Guide For Semiautomatic Welding Equipment Common MIG Shielding GasesApplication Drive rolls if necessary Welding arc not stable Wire slipping in drive rollsReadjust welding parameters Welding power sourceConsumables − ACCESSORIES/CONSUMABLESAccessories Replacement Drive RollsWork like a Pro Start Your Professional Service SupportAssistance Hobart Welding Products Contact your Distributor for