Hobart Welding Products OM-198 683C Setting Gun Polarity For Wire Type, Installing Gas Supply

Page 16

2-8. Setting Gun Polarity For Wire Type

Changing Polarity

Wire Drive

Work Clamp Lead

Assembly Lead

 

D

D

+Positive Terminal - Negative Terminal

Shown as shipped – Electrode Positive (DCEP): For solid steel, stainless steel, aluminum, or flux core with gas wires (GMAW).

Electrode Negative (DCEN): Reverse lead connections at terminals from that shown above for gasless flux core wires (FCAW). Drive assembly becomes negative.

1Polarity Changeover Label Information

Always read and follow manufac- ture’s recommended polarity.

1

3/4, 11/16 in

Ref. 190 821-A

2-9. Installing Gas Supply

4

5

6

1

2

3

Argon Gas

1

OR

2

7

3

8 9

CO2 Gas

Tools Needed:

1-1/8, 5/8 in

Obtain gas cylinder and chain to running gear, wall, or other station- ary support so cylinder cannot fall and break off valve.

1Cap

2Cylinder Valve

Remove cap, stand to side of valve, and open valve slightly. Gas flow blows dust and dirt from valve. Close valve.

3Cylinder

4Regulator/Flowmeter

Install so face is vertical.

5Regulator/Flowmeter Gas Hose Connection

6Welding Power Source Gas Hose Connection

Connect customer supplied gas hose between regulator/flowmeter gas hose connection, and fitting on rear of welding power source.

7 Flow Adjust

Typical flow rate is 20 cfh (cubic feet per hour). Check wire man- ufacturer’s recommended flow rate.

8CO2 Adapter (Customer Sup- plied)

9O-Ring (Customer Supplied)

Install adapter with O-ring between regulator/flowmeter and CO2 cylinder.

Ref. ST-148 265-B / ST-802 028

OM-198 683 Page 12

Image 16
Contents Processes OM-198 683CDescription From Hobart to You Table of Contents Page Symbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying Metal can injure eyes Buildup of GAS can injure or killPrincipal Safety Standards EMF Information About PacemakersSignification des symboles Consignes DE Securite Lire Avant UtilisationUN Choc É Lectrique peut tuer LES Fumé ES ET LES GAZ peuvent ê tre dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un incendie ou une explosionLE Bruit peut affecter l’ouïe Risque D’INCENDIE OU LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut DES Organes Mobiles peuvent provoquer des blessuresInformation sur les champs é lectromagné tiques Principales normes de sé curitéConsignes relatives aux stimulateurs cardiaques Installation SpecificationsWelding Power Source Duty Cycle And Overheating Exceeding duty cycle can damage unit and void warrantyVolt-Ampere Curves Welding Gun Duty Cycle And OverheatingDefinition Installing Welding Gun Installing Work ClampConnecting Olympic 30A Gun Setting Gun Polarity For Wire Type Installing Gas SupplyInstalling Wire Spool and Adjusting Hub Tension Positioning Jumper LinksElectrical Service Guide Selecting a Location And Connecting Input PowerThreading Welding Wire ScaleWeld Parameter 196 Operation ControlsVoltmeter And Wire Feed Speed Meter Operation Power Up StatusError Message Welding StatusMaintenance &TROUBLESHOOTING Routine MaintenanceCircuit Breaker CB1 Unit OverloadTurn Off power Changing Drive Roll and Wire Inlet GuideReplacing Gun Contact Tip Aligning Drive Rolls and Wire Guide Disconnect gun from unit first Cleaning Or Replacing Gun LinerTo Reassemble Gun Replacing Switch And/Or Head Tube Disconnect gun firstTroubleshooting Trouble RemedyOM-198 683 Electrical Diagram Circuit DiagramParts List Main AssemblyDia Part Description Mkgs Quantity Baffle, Center w/Components Baffle, Center w/Components -1 Item M-25 Gun M-25 Gun -1 Item Panel, Front w/Components -1 Item Wire Drive And Gears -2 Item Wire Drive And GearsDrive Roll And Wire Guide Kits Panel, Rear w/Components -1 ItemPage Page Service SupportContact your Distributor for Hobart Welding Products