Hobart Welding Products OM-944 196 639G, 175 manual Volt-Ampere Curves, Load Amps

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3-3. Volt-Ampere Curves

A. 115 VAC Model

	30.0
	25.0
VOLTS	20.0
VOLTS
OUTPUT	15.0													Range 4
	15.0													Range 3
														Range 3
														Range 2
														Range 2
	10.0													Range 1
	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

LOAD AMPS

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.

B. 230 VAC Model

	30.0
	25.0
VOLTS	20.0																		Range 4
																			Range 3
	15.0
OUTPUT	15.0																	Range 2
																		Range 2
																Range 1
	10.0
	10.0
	5.0
	0.0
	0	10	20	30	40	50	60	70	80	90	100	110	120	130	140	150	160	170	180	190	200

LOAD AMPS

ssb1.1 10/91 − 196 608 / 196 609

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OM-944 Page 11

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Contents OM-944 ProcessesDescription From Hobart to You Table of Contents Options and Accessories Warranty 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 − Consignes DE Sécurité − À Lire Avant Utilisation Identifie un message de sécurité particulierLE Bruit peut affecter l’ouïe LE Soudage peut causer un incen- die ou une explosionLES Particules Projetées peu- vent blesser les yeux LES Pièces Chaudes peuvent cau- ser des brûlures gravesLES Pièces Mobiles peuvent cau- ser des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut FairePrincipales normes de sécurité Information sur les champs électromagnétiquesConsignes relatives aux stimulateurs cardiaques − Specifications SpecificationsVAC Model Output Amperes Duty Cycle And OverheatingOutput Duty Cycle %Load Amps Volt-Ampere CurvesInstalling Welding Gun Installing Work Clamp − InstallationChanging Polarity Process/Polarity TableInstalling Gas Supply Rating Label = GND/PE Do not move or operate unit where it could tipInstalling Wire Spool And Adjusting Hub Tension Electrical Service Guide For 230 VAC ModelHold wire tightly to keep it from unraveling Threading Welding WireControls − OperationWelding Guide Weld Parameter Chart For 115 VAC ModelFor 115 Volt Wire Welding Package Weld Parameter Chart For 230 VAC Model For 230 Volt Wire Welding Package Overload Protection Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Disconnect power before maintainingChanging Drive Roll Or Wire Inlet Guide Turn Off power before replacing contact tipReplacing Gun Contact Tip Cleaning Or Replacing Gun Liner Disconnect gun from unitTo Reassemble Gun Replacing Switch And/Or Head Tube Trouble Remedy Troubleshooting TableCircuit Diagram For 115 VAC Model − Electrical DiagramCircuit Diagram For 230 VAC Model Typical MIG Process Connections − MIG Welding Gmaw GuidelinesSelect Voltage Typical MIG Process Control SettingsWire Size Amperage Range Thickness to Amperage aHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Poor 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 − Distortion Troubleshooting − Waviness Of BeadTroubleshooting Guide For Semiautomatic Welding Equipment Common MIG Shielding GasesApplication Welding arc not stable Wire slipping in drive rolls Return To Table Of Contents Main Assembly − Parts ListDia Part H-10 Gun Optional Drive Rolls Options195 Page Support ServiceHobart Welding Products Contact your Distributor for