Miller Electric SS-74S12 Troubleshooting, Disconnect power before troubleshooting, Trouble Remedy

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6-3. Troubleshooting

 

Y Disconnect power before troubleshooting

Trouble

Remedy

Wire feeds, shielding gas flows, but

Check interconnecting cord connections. If secure, check cord for continuity and repair or replace

electrode wire is not energized.

(see Sections 4-5and 4-6).

Wire feeder is on, display does not

Check and reset circuit breaker at welding power source.

light up, motor does not run, gas valve

 

and welding power source contactor do

 

not pull in.

 

Electrode wire feeding stops or feeds

Check gun trigger connection. See gun Owner’s Manual.

erratically during welding.

Check gun trigger. See gun Owner’s Manual.

 

 

Readjust hub tension and drive roll pressure (see Section 4-11).

 

Change to correct size drive roll (see Table 8-1).

 

Clean or replace dirty or worn drive roll.

 

Incorrect size or worn wire guides.

 

Replace contact tip or liner. See gun Owner’s Manual.

 

Remove weld spatter or foreign matter from around nozzle opening.

 

Have Factory Authorized Service Agency check drive motor or motor control board PC1.

Motor runs slowly.

Check for correct input voltage.

Wire feeder power is on, displays light

Check welding gun trigger leads for continuity, and repair leads or replace gun.

up, unit jogs and purges but will not

 

trigger.

 

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Contents Processes OM-1500-11 207 750KDescription File MIG GmawFrom Miller 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 sécuritéInstalling Swivel Into Pipe Post SpecificationsRating 12 ft 3.7 m Boom 16 ft 4.9 m BoomInstalling Boom And Reel Support Adjusting Control Tilt BracketEquipment Connection Diagram Installing Wire Guide ExtensionPin Plug Information Control Box ConnectionsPin Information Wire Type, Size, And Feed Speed Capability Table Removing Safety Collar And Adjusting BoomMotor Speed Wire Type Wire Size Feed Speed Capability Gun Recommendation TableRear roll to half that of the front rolls Installing And Threading Welding WireSetting Current Detect Override S1-1 Setting Internal DIP SwitchesCurrent Detect Override OFF Factory Default S1-1 And S1-2 Automatic Run-In OFF S1-1 And S1-2Operational Terms General Terms Cold Wire JogJog/Purge Power SwitchTrigger Hold Switch Disconnect power before maintaining Routine MaintenanceMonths Indicated Error DiagnosticsError Indications Disconnect power before troubleshooting TroubleshootingTrouble Remedy − Electrical Diagram − Parts List Quantity Control Box 070 Boom Assembly Boom Assembly -1Item Drive Assembly, Wire Drive Assembly, Wire -1Item Support, Hub & Reel Fraction Metric Drive Roll and Wire Guide KitsRoll Kit RollOM-1500−11 Page Support ServiceMiller Electric Mfg. Co Owner’s Record

SS-74D12, SS-74S16, and SS-74D16, SS-74S12 specifications

Miller Electric has long been a leader in the field of welding equipment, and their range of gas-powered engine-driven welding machines showcases innovative technology designed for efficiency, reliability, and versatility. Among these products, the Miller SS-74S12, SS-74D16, SS-74S16, and SS-74D12 models stand out, providing robust solutions tailored for a variety of welding applications.

The SS-74S12 is a standout model, known for its smooth operation and user-friendly interface. At the heart of this machine lies a powerful engine that delivers consistent performance, making it ideal for remote job sites where access to power may be limited. The SS-74S12 features advanced inverter technology, ensuring optimal energy consumption without sacrificing welding quality. Its lightweight design enhances portability, allowing for convenient transport across different work sites.

Next in the lineup is the SS-74D16, which caters to users who require increased versatility. This machine incorporates dual-voltage capabilities, enabling it to operate effectively with either 120V or 240V power sources. This flexibility makes it a prime choice for contractors who frequently switch between residential and industrial projects. Additionally, the SS-74D16 is equipped with a digital display, providing real-time feedback on welding parameters, which improves user experience and accuracy.

The SS-74S16 model brings similar features to the table but with a focus on increased duty cycle. This characteristic is particularly advantageous for those engaged in heavy-duty fabrication work where extended periods of operation are commonplace. The enhanced cooling system ensures that the machine remains operational without overheating, allowing for longer, uninterrupted work sessions.

Finally, the SS-74D12 model is tailored for users who prioritize compact designs without compromising performance. This model combines the advantages of the other machines in a space-saving format, making it an excellent choice for workshops or job sites with limited space. The SS-74D12 also emphasizes fuel efficiency, allowing for lower operating costs over time, which is critical for businesses working with budget constraints.

Together, these models from Miller Electric represent a blend of advanced technology and practical features that cater to the needs of modern welders. Whether requiring mobility, versatility, durability, or compactness, users can find a model that fits their specific welding requirements, all while upholding Miller Electric’s reputation for quality and performance in the industry.
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