Hobart Welding Products OM-950 manual Duty Cycle Charts, For AC/DC Models, For 235/160A Models

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4-2. Duty Cycle Charts

A. For AC/DC Models

Duty Cycle is percentage of 10 minutes that unit can weld at rated load without overheating.

Y 20% Duty Cycle at 225 Amperes. Ex- ceeding duty cycle can damage unit and void warranty.

2 Minutes Welding

8 Minutes Resting

For 235/160A Models*

*These models have a 15% duty cycle when used with 50 Hz input power.

086 727

B. For AC Models

Duty Cycle is percentage of 10 minutes that unit can weld at rated load without overheating.

	Y 20% Duty Cycle at 225 Amperes. Ex-
	ceeding duty cycle can damage unit
2 Minutes Welding	and void warranty.
2 Minutes Welding	8 Minutes Resting

For 235A Models*

*These models have a 15% duty cycle when used with 50 Hz input power.

001 836-A

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Contents Description ProcessesFrom Hobart to You Table of Contents Page 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 DES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer unIncendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut SUR En ce qui concerne les stimulateurs cardiaques Principales normes de sécuritéSymbols And Definitions − DefinitionsManufacturer’s Rating Labels AC Models − InstallationSpecifications AC/DC ModelsFor AC Models Duty Cycle ChartsFor AC/DC Models For 235/160A ModelsVolt-Ampere Curves For AC Models For 235A Models Selecting a LocationOnto Electrode Holder Installing Electrode Holder And Work ClampInstalling Electrode Cable and Barrel Holder or work clampInput Voltage 230 Input Amperes At Rated Output Electrical Service GuideWeld Output Cables 50/60 HzDisconnect and lockout/tag Connecting Input PowerOut input power before instal =GND/PE Earth Groundbe sure to supply correct in- put powerFor DC Weld Output − OperationControls Controls For AC/DC ModelsControls For AC Models Months − Maintenance & TroubleshootingRoutine Maintenance Lubricating Shunt Block And Anti-Noise AdjustmentReinstalling Amperage Adjustment Indicator Trouble Remedy TroubleshootingCircuit Diagram For AC 230 Volts Models Circuit Diagram For AC/DC 230 Volts ModelsWelding Methods Shielded Metal Arc Welding Smaw Procedure − Welding Methods & Troubleshooting6013 7014 Electrode And Amperage Selection ChartPositioning The Electrode Holder Striking An ArcArc Length Weld Bead CharacteristicsConditions That Affect Weld Bead Shape Electrode AngleButt Joints Electrode Movement During WeldingPorosity Welding TroubleshootingLap Joints Tee JointsExcessive Spatter Incomplete FusionLack Of Penetration Distortion Excessive PenetrationBurn-Through Waviness Of BeadStart Your Professional Welding Career Now Main Assembly AC/DC model illustrated − Parts ListMain Assembly Page Service SupportAssistance Hobart Welding Products Contact your Distributor for