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Hobart Welding Products OM-947 212 149D manual Process/Polarity Table, Changing Polarity

Models: OM-947 212 149D

1 48

Page 15

4-2. Process/Polarity Table

Process	Polarity	Cable Connections

		Cable To Gun	Cable To Work Clamp
		Cable To Gun	Cable To Work Clamp

FCAW − Self-shielding wire −	DCEN − Straight Polarity	Connect to negative (−)	Connect to positive (+) output
no shielding gas		output terminal	terminal

GMAW* − Solid wire with	DCEP − Reverse polarity	Connect to positive (+) out-	Connect to negative (−) output
shielding gas		put terminal	terminal

* Unit must have MIG conversion kit 195 158 installed.

4-3.	Changing Polarity
		1 Lead Connections For Direct
		Current Electrode Negative
		(DCEN)
		2 Lead Connections For Direct
		Current Electrode Positive
		(DCEP)
		Always read and follow wire
		manufacturer’s recommended po-
		larity, and see Section 4-2.
		Close door.
	1	2
		Ref. 210 428

OM-947 Page 11

Page 15

Image 15

Hobart Welding Products OM-947 212 149D manual Process/Polarity Table, Changing Polarity

Contents

Processes DescriptionFile Flux Cored Fcaw From Hobart to You Table of Contents 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 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 SUREn ce qui concerne les stimulateurs cardiaques Principales normes de sécurité− Specifications SpecificationsDuty Cycle And Overheating Voltage − InstallationInstalling Work Clamp Volt-Ampere CurvesChanging Polarity Process/Polarity TableInstalling Gas Supply Tools Needed 11/16, 1-1/8Shielding Gas Tools Needed Installing Wire Spool And Adjusting Hub TensionDo not move or operate unit where it could tip Turn off welding power source Installing Contact Tip And NozzleReinstall tip adapter, if applicable, contact tip Threading Welding Wire150 mm Pull and hold wire cut off end Be sure that wire is positionedLoad − OperationControls Operating The GunWeld Parameter Chart 210 Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Overload ProtectionChanging Drive Roll Or Wire Inlet Guide Replacing Gun Contact Tip Cleaning Gun Liner Replacing Gun Liner Head Mm / 10 mm TubeLoosen liner setscrew 10 mm Troubleshooting Table Trouble RemedyDoes not run Circuit Diagram − Electrical Diagram− Wire Welding Guidelines Typical Fcaw Process ConnectionsTypical MIG Process Connections Select Voltage Typical Control SettingsWire Size Amperage Range Thickness to Amperage aHolding And Positioning Welding Gun Slow Normal Fast Conditions That Affect Weld Bead ShapeShort Normal Long ShortNormalLongPoor 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 Wire does not feed Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Troubleshooting Guide For Semiautomatic Welding EquipmentMain Assembly − Parts ListOptional Pkg 225− See Table Pkg195 Hub Kit For 8 in Wire Spool 209Weatherproof Nylon Page Page Page Service SupportAssistance Hobart Welding Products Contact your Distributor for

4-2. Process/Polarity Table

Changing Polarity

(DCEP)