Manuals / Miller Electric / Power Tools / Welder

Miller Electric OM-230 manual Setting Gun Polarity For Wire Type, Installing Gas Supply, 11/16

Models: OM-230

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.A complete Parts List is available at www.MillerWelds.com

4-8. Setting Gun Polarity For Wire Type

Changing Polarity

	Wire Drive	Work Clamp Lead
	Assembly Lead	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 manufacture’s recommended polarity.

1

3/4, 11/16 in

Ref. 190 821-A

4-9. Installing Gas Supply

		1
Tools Needed:		2
1-1/8, 5/8 in
	4	3
7	4
7
		Argon Gas Or Mixed Gas
		1
5		2
		3
	8	9

CO2 Gas

6

Obtain gas cylinder and chain to running gear, wall, or other stationary 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 manufacturer’s recommended flow rate.

8CO2 Adapter (Customer Supplied)

9O-Ring (Customer Supplied)

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

Rear Panel

Ref. 804 654-A / Ref. 804 912-A

OM-230 693 Page 16

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Miller Electric OM-230 Setting Gun Polarity For Wire Type, Installing Gas Supply, Polarity Changeover Label Information

Contents

OM-230 693C ProcessesDescription File MIG GmawFrom Miller to You Table of Contents Typical MIG Process Connections − Parts List− MIG Welding Gmaw Guidelines Symbol Usage Arc Welding HazardsElectric Shock can kill HOT Parts can cause severe burnsFumes and Gases can be hazardous ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal or Dirt can injure eyesWelding Wire can cause injury Fire or Explosion hazardFalling Unit can cause injury Moving Parts can cause injuryPrincipal Safety Standards California Proposition 65 WarningsEMF Information About Implanted Medical DevicesSymboles utilisés UNE Décharge Électrique peut entraîner la mortLE Soudage peut provoquer un in cendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peuvent être dangereux LE Bruit peut endommager l’ouïe LES Bouteilles peuvent exploser si elles sont endommagéesRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesserLE Soudage À L’ARC risque de provoquer des interférences Proposition californienne 65 AvertissementsLES Fils DE Soudage peuvent provoquer des blessures En ce qui concerne les implants médicaux Principales normes de sécuritéInformation EMF OM-230 693 Symbols And Definitions SpecificationsOverheating Welding Power Source Duty Cycle And OverheatingVolt-Ampere Curves Connecting To Weld Output Terminals Installing Work Cable And ClampConnecting Spoolmatic 15A Or 30A Gun 32 in 2.4 mm Connecting XR Aluma-Pro, XR Edge, XR-A Gun, Or XR-A PythonGun End Gun Liner Wire Outlet Guide Setting Gun Polarity For Wire Type Installing Gas SupplyPolarity Changeover Label Information 11/16Installing Wire Spool And Adjusting Hub Tension Positioning Jumper LinksElectrical Service Guide Input Voltage200 230 460 575 127 206L2L1 230 VAC Selecting a Location And Connecting Input Power18 in 457 mm of space for airflow =GND/PE Earth Ground Threading Welding Wire PressureScale Remove gun nozzle and contact tipOM-230 693 Weld Parameters 226 650-B − Operation ControlsTrigger and pull the trigger again momentarily one second JOG ModeRun−in Wire Feed Speed Settings Voltmeter And Wire Feed Speed Meter Operation Jog ModePower Up Status Welding StatusTimers Set Up Push Motor Torque SUP Or Reset rES Unit Overload Routine MaintenanceChanging Drive Roll and Wire Inlet Guide Aligning Drive Rolls and Wire Guide Turn Off powerAssembly open View is from top of drive rollsTroubleshooting Trouble Remedy OM-230 693 − Electrical Diagram 229 485-A − MIG Welding Gmaw Guidelines Typical MIG Process ConnectionsTypical MIG Process Control Settings Wire Size Amperage RangeSelect Wire Size Recommendation Wire Speed Select VoltageHolding And Positioning Welding Gun Side View Of Gun AngleConditions That Affect Weld Bead Shape Push Perpendicular DragShort Normal Long Slow NormalGun Movement During Welding Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Troubleshooting − Excessive Spatter Troubleshooting − PorosityTroubleshooting − Excessive Penetration Possible Causes Corrective ActionsTroubleshooting − Burn-Through Troubleshooting − Lack Of PenetrationTroubleshooting − Incomplete Fusion Weld bead Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Application Troubleshooting Guide For Semiautomatic Welding EquipmentCommon MIG Shielding Gases Welding arc not stable Wire slipping in drive rolls Readjust welding parametersWelding power source Drive rolls if necessaryDrive Roll And Wire Guide Kits 087Grooved 056 0.9 mm 204Support ServiceYour distributor also gives To locate a Distributor or Service Agency visit Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s