Miller Electric 145 DX manual Troubleshooting − Burn-Through, Troubleshooting − Waviness Of Bead

Page 49

12-19. Troubleshooting − Burn-Through

Burn-Through − weld metal melting completely through base metal resulting in holes where no metal remains.

Possible Causes

Corrective Actions

 

 

Excessive heat input.

Select lower amperage. Use smaller electrode.

 

 

 

Increase and/or maintain steady travel speed.

 

 

12-20. Troubleshooting − Waviness Of Bead

Waviness Of Bead − weld metal that is not parallel and does not cover joint formed by base metal.

Possible Causes

Corrective Actions

 

 

Unsteady hand.

Use two hands. Practice technique.

 

 

12-21. Troubleshooting − Distortion

 

 

 

Distortion − contraction of weld met-

 

 

 

al during welding that forces base

 

 

 

metal to move.

 

 

Base metal moves

 

 

 

 

in the direction of

 

 

 

 

the weld bead.

 

 

 

Possible Causes

 

Corrective Actions

 

 

 

Excessive heat input.

 

Use restraint (clamp) to hold base metal in position.

 

 

 

 

 

 

 

Make tack welds along joint before starting welding operation.

 

 

 

 

 

 

 

Select lower amperage for electrode.

 

 

 

 

 

 

 

Increase travel speed.

 

 

 

 

 

 

 

Weld in small segments and allow cooling between welds.

 

 

 

 

OM-4417 Page 45

Page 48 Page 50
Image 49
Page 48 Page 50
Contents Processes OM-4417210 403CDescription File Engine DriveFrom Miller to You Table of Contents Page Arc Welding Hazards Symbol UsageEngine Hazards Compressed Air Hazards California Proposition 65 Warnings Principal Safety StandardsEMF Information Radiation can cause interference− Consignes DE Sécurité − Lire Avant Utilisation Signification des symbolesUN Choc Électrique peut tuer LES Fumées ET LES GAZ peuvent être dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un in- cendie ou une explosionDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut affecter l’ouïe’EMPLOI Excessif peut ’AIR Comprimé peut provoquer des blessuresLE Surchauffement peut endom- mager le moteur électrique LES Étincelles Volantes risquent de provoquer des blessuresPour les moteurs à essence LE Soudage À L’ARC risque de provoquer des interférencesPour les moteurs diesel Boulevard, Rexdale, Ontario, Canada M9W 1R3 téléphoneSymbol Definitions − SpecificationsWeld, Power, And Engine Specifications − DefinitionsDimensions Dimensions, Weights, And Operating AnglesVolt-Ampere Curves Fuel Consumption Duty Cycle Generator Power Curve100% Duty Cycle at 80 Amperes CC/DC Installing Welding Generator − InstallationGrounding Generator To Truck Or Trailer Frame Engine Prestart Checks − Standard Model Grounding Generator When Supplying Building Systems13 mm Full Gasoline Fuel Valve Open valveEngine Prestart Checks − DX Model Connecting The Battery DX Models Only+ − Tools Needed 1/2Selecting Weld Cable Sizes Connecting To Weld Output Terminals150 ft 200 ft 250 ft 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 mMaterial Thickness Reference Chart Controls Standard Models See Section − Operating the Welding GeneratorStop engine and add oil if light goes on see Section Description Of Controls Standard Models See SectionTo Start Controls DX Models See Section Description Of Controls DX Models See Section − Operating Auxiliary Equipment Generator Power Panel ReceptaclesAC Receptacle RC1 Routine Maintenance − MaintenanceStop engine Servicing Air CleanerStandard Model Shown Stop engine. Close fuel valve Adjusting Engine Speed Standard Models OnlyTools Needed Weld/Power Speed Adjustment Adjusting Engine Speed DX Models OnlyIdle Speed Adjustment Troubleshooting − TroubleshootingGenerator Power WeldingEngine Circuit Diagram For Standard Models − Electrical DiagramsCircuit Diagram for DX Models Selecting Equipment − Generator Power GuidelinesHow Much Power Does Equipment Require? Grounding When Supplying Building SystemsEarth ground if supplying Amperes x Volts = WattsApproximate Power Requirements For Farm/Home Equipment Approximate Power Requirements For Industrial MotorsIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentHow Much Power Can Generator Supply? Power Required To Start MotorSingle-Phase Induction Motor Starting Requirements KVA/HP x HP x 1000 = Starting AmperageTypical Connections To Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord PossibleWeld current starts when electrode touches work- piece Stick Welding Procedure− Stick Welding Smaw Guidelines Striking an Arc − Scratch Start Technique Electrode and Amperage Selection ChartStriking an Arc − Tapping Technique Good Weld Bead Characteristics Poor Weld Bead CharacteristicsPositioning Electrode Holder 10-30 9090 End View of Work AngleElectrode Movement During Welding Conditions That Affect Weld Bead ShapeLap Joint Butt JointsTee Joint 16 in 30 1.6 mm Tack WeldsTroubleshooting − Excessive Spatter Troubleshooting − PorosityWeld Test Possible Causes Corrective ActionsTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Excessive Penetration Troubleshooting − Waviness Of Bead Troubleshooting − Burn-ThroughTroubleshooting − Distortion Main Assembly Standard Model − Parts ListDia Part Description Quantity Mkgs 4546 51 41 Main Assembly DX ModelMain Assembly OM-4417 Your distributor also gives ServiceSupport Miller Electric Mfg. Co To locate a Distributor or Service Agency visitFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s
Related manuals
Manual 4 pages 16.38 Kb

145 DX specifications

Miller Electric has established itself as a leading name in the welding industry, and the Miller Electric 145 DX and 145 are notable additions to its lineup of innovative welding machines. Designed to offer versatility and efficiency, these units cater to both novice welders and seasoned professionals seeking reliable equipment for various welding applications.

One of the key features of the Miller Electric 145 DX and 145 is their advanced welding technology. Both models utilize inverter technology, which allows for a compact design while delivering exceptional power. This inverter design not only increases efficiency but also reduces energy consumption, making it an environmentally friendly choice. The lightweight nature of these units makes them highly portable, allowing users to easily transport them to job sites or move them around the workshop.

The Miller Electric 145 DX model incorporates a digital interface that simplifies set-up and operation. This user-friendly digital display shows critical parameters such as voltage and amperage, helping the operator make quick adjustments on-the-fly for optimal results. The advanced Auto-Set feature adjusts the machine settings automatically based on the material thickness and type, significantly reducing the learning curve for inexperienced welders.

Both the 145 DX and 145 models can handle a variety of welding processes, including MIG and TIG welding. This versatility makes them suitable for a wide range of applications, from automotive repair and fabrication to metal sculpture and DIY projects. The machines are capable of welding aluminum, stainless steel, and mild steel with ease, providing excellent penetration and bead appearance.

Another noteworthy characteristic of the Miller Electric 145 series is their reliability and durability. Designed with robust components that can withstand challenging working environments, these machines are built to last. The thermal overload protection feature ensures the units do not overheat, safeguarding the internal components and ensuring a longer operational life.

In summary, the Miller Electric 145 DX and 145 stand out in the welding equipment market due to their advanced inverter technology, user-friendly digital interfaces, versatile capabilities, and durability. They are ideal choices for anyone looking to elevate their welding experience, delivering consistent and reliable performance across a variety of projects.
Top Page Image Contents