Hobart Welding Products OM-949 manual Specifications, Duty Cycle Charts

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SECTION 3 − INSTALLATION

3-1. Specifications

		Amperage	Max Open-	Amperes Input at Rated Load
	Rated Welding Output			Output, Single-Phase		Weight
			Circuit
		Range
			Voltage	220 V (50 Hz)	230 V (60 Hz)


	165 A @ 25 Volts AC, 20% Duty Cycle	30 − 205A	80 VAC	47.5	47.5	83 lb
				7.6*	2.3*	(38 kg)

Overall Dimensions

Height: 18-3/4 in (476 mm); Width: 12-3/4 in (323 mm); Depth: 17-1/2 in (445 mm)

*While idling

3-2. Duty Cycle Charts

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

	Y 20% Duty Cycle at 165 Amperes. Ex-
	ceeding duty cycle can damage unit
2 Minutes Welding	and void warranty.
2 Minutes Welding	8 Minutes Resting

	200
	180
	160
Amperage	140
Amperage	120
Output	120
	100

	80
	0	20	40	60	80	100
			40

% Duty Cycle	215 256-A

OM-949 Page 9

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Contents Description ProcessesFrom Hobart to You Table of Contents Page Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings EMF Information Principal Safety StandardsAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux UNE Décharge Électrique peut entraîner la mortIndique un message de sécurité particulier Incendie ou une explosion LE Soudage peut provoquer unDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesLA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresEn ce qui concerne les stimulateurs cardiaques Principales normes de sécuritéDuty Cycle Charts SpecificationsSelecting a Location Volt-Ampere CurvesVolt Model AmpsInstalling Electrode Cable and Barrel onto Electrode Holder Installing Electrode Holder And Work ClampInstalling Work Cable onto Work Clamp Removing Barrel From Elec- trode Holder150 ft 200 ft 250 ft Weld Output Cables350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Put terminalsConnecting Input Power Electrical Service GuideControls Lubricating Shunt Block And Anti-Noise Adjustment Routine MaintenanceMonths Wrapper Remove wrapper from unit Crank Handle Shunt Shaft Reinstalling Amperage Adjustment IndicatorTrouble Remedy Troubleshooting− Electrical Diagrams Welding Methods Shielded Metal Arc Welding Smaw Procedure − Welding Methods & Troubleshooting6013 7014 Electrode And Amperage Selection ChartPositioning The Electrode Holder Striking An ArcConditions That Affect Weld Bead Shape Weld Bead CharacteristicsElectrode Angle Arc LengthButt Joints Electrode Movement During WeldingLap Joints Welding TroubleshootingTee Joints PorosityIncomplete Fusion Excessive SpatterLack Of Penetration Burn-Through Excessive PenetrationWaviness Of Bead DistortionStart Your Professional Welding Career Now − Parts List Dia Part Description Quantity Page Support ServiceAssistance Hobart Welding Products Contact your Distributor for