Miller Electric DS-74DX12, and DS-74DX16 manual From Miller to You

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Miller is the first welding equipment manufacturer in the U.S.A. to be registered to the ISO 9001:2000 Quality System Standard.

From Miller to You

Thank you and congratulations on choosing Miller. Now you can get the job done and get it done right. We know you don’t have time to do it any other way.

That’s why when Niels Miller first started building arc welders in 1929, he made sure his products offered long-lasting value and superior quality. Like you, his customers couldn’t afford anything less. Miller products had to be more than the best they could be. They had to be the best you could buy.

Today, the people that build and sell Miller products continue the tradition. They’re just as committed to providing equipment and service that meets the high standards of quality and value established in 1929.

This Owner’s Manual is designed to help you get the most out of your Miller products. Please take time to read the Safety precautions. They will help you protect yourself against potential hazards on the worksite.

We’ve made installation and operation quick and easy. With Miller you can count on years of reliable service with proper maintenance. And if for some reason the unit needs repair, there’s a Troubleshooting section that will help you figure out what the problem is. The parts list will then help you to decide the exact part you may need to fix the problem. Warranty and service information for your particular model are also provided.

Miller Electric manufactures a full line

of welders and welding related equipment. For information on other quality Miller

products, contact your local Miller distributor to receive the latest full line catalog or individual specification sheets. To locate your nearest distributor or service agency call 1-800-4-A-Miller, or visit us at www.MillerWelds.com on the web.

Mil_Thank 4/05

Working as hard as you do

−every power source from Miller is backed by the most hassle-free warranty in the business.

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Contents Description OM-1500-14 207 499HProcesses File MIG GmawFrom Miller to You Table of Contents Options and Accessories Warranty Electric Shock can kill Symbol UsageArc Welding Hazards HOT Parts can cause severe burnsWelding can cause fire or explosion Fumes and Gases can be hazardousARC Rays can burn eyes and skin Flying Metal or Dirt can injure eyesFalling Unit can cause injury Welding Wire can cause injuryFire or Explosion hazard Moving Parts can cause injuryEMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings About Implanted Medical DevicesIndique des instructions spécifiques Symboles utilisésUNE Décharge Électrique peut entraîner la mort LE Soudage peut provoquer un in cendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peuvent être dangereux Risque D’INCENDIE OU D’EXPLO- Sion LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées 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-1500-14 Installing Swivel Into Pipe Post − InstallationSpecifications − IntroductionInstalling Control Box And Adjusting Tilt Installing Boom And Reel SupportInstalling Wire Guide Extension Exceed 100 PSI 689 kPa Equipment Connection DiagramShielding gas pressure not to Pin Information Control Box ConnectionsPin Plug Information Motor Speed Wire Type Wire Size Feed Speed Capability Removing Safety Collar And Adjusting BoomWire Type, Size, And Feed Speed Capability Table Gun Recommendation TableSlip at the feeder see pressure adjust Installing And Threading Welding WireAgainst surface. Tighten knob so wire Ment above. Cut wire off. Close coverDIP Switch S1 DIP Switch S4 Not For Customer Use Setting Internal DIP SwitchesWhen DIP switch positions are changed, Position Settings And Results For DIP Switch S1Power Source Selection Menu − Operation Power SwitchLeft/Right Select Switch Operational TermsTime sec Jog/Purge SwitchFront Panel Controls Upper Display To set the correct voltage range for a particular powerProgram Push Button Setup Push Button Lower DisplaySequence Push Button Adjust ControlWelding Sequence Diagram Start WeldAuxiliary Menus Burnback Trigger Hold SetupWire Feed Speed Units Trigger Program SelectFor more information on Sequence Push Button see Section − Setting Sequence ParametersSequence Parameters In a Program − Setting Dual Schedule Parameters Optional Dual Schedule Switch DiagramsError Indications DiagnosticsError There is a two-position DIPRoutine Maintenance − Maintenance & TroubleshootingDiagnostics For User Defined Options MonthsTrouble Remedy TroubleshootingDisconnect power before troubleshooting Pull− Electrical Diagram Circuit Diagram204 144-C − Parts List 10-3 10-2 10-4 29 28Optional Control Box Harness Connectors/Receptacles PLG117 165Boom Assembly Boom Assembly -1Item Drive Assembly, Wire Drive Assembly, Wire -1Items 26PLG5 Hardware is common Not available unless listedRoll Drive Roll and Wire Guide KitsFraction Metric Kit RollPage Start Your Professional Welding Career Now Page Support ServiceYour distributor also gives For assistance in filing or settling claims, contact To locate a Distributor or Service Agency visitMiller Electric Mfg. Co Your distributor and/or equipment manufacturer’s