Miller Electric 251 NT manual Remote Amperage/Voltage Control

Page 23

5-2. Remote Amperage/Voltage Control

1 Remote 14 Receptacle RC1

Connect optional remote control to

RC1 (see Section 4-8).

2 Remote Hand Control (Optional)

3 Remote Foot Control (Optional)

. Engine runs at weld/power speed whenever a device con-

1nected to the remote 14 recep- tacle is running.

 

 

 

In Example:

 

 

 

Process = Stick (SMAW)

 

 

 

Min = 40 A CC/DC

 

 

 

Max = 140 A CC/DC

 

 

 

3

 

 

 

2

 

 

 

Max (140 A DC)

 

 

 

Min (40 A DC)

Set Remote Control

Set Polarity Switch

Set Process and

Adjust Remote Control

Switches

 

A/V Control

(Stick Welding Only)

 

 

 

ST-801 943-B / ST-189 925-A / S-0769 / S-0774

OM-486 Page 19

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Contents Description OM-486Processes From Miller to You Table of Contents Page ARC Rays can burn eyes and skin Symbol UsageArc Welding Hazards Electric Shock can killEngine Hazards Engine Heat can cause fire Battery Explosion can BlindMoving Parts can cause injury Engine Exhaust Gases can killARC Welding can cause interference Principal Safety StandardsEMF Information Radiation can cause interferenceLES Fumé ES ET LES GAZ peuvent ê tre dangereux Signification des symbolesConsignes DE SÉ Curité Lire Avant Utilisation UN Choc É Lectrique peut tuerLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un in- cendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES PIÈ CES Chaudes peuvent provoquer des brû lures gravesLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessures’EXPLOSION DE LA Batterie peut LA Chaleur DU Moteur peut pro- voquer un incendieConsignes relatives aux stimulateurs cardiaques Principales normes de sé curitéInformation sur les champs é lectromagné tiques LE Soudage À L’ARC risque de provoquer des interfé rencesDefinitions SpecificationsSymbol Definitions Weld, Power, And Engine SpecificationsFuel Consumption Dimensions, Weights, and Operating AnglesDimensions Duty Cycle Auxiliary Power CurveExceeding duty cycle can damage unit and void warranty Volt-Ampere Curves CC/DC ModeCV/DC Mode CC/AC ModeEngine Prestart Checks InstallationInstalling Welding Generator Charger Activating The Dry Charge Battery If ApplicableDo not overfill battery cells Read and follow all instrucConnect negative cable last Connecting The BatteryInstalling Exhaust Pipe Connecting To Weld Output Terminals10 100% Duty Cycle Selecting Weld Cable SizesRemote 14 Receptacle Information 100 ft 30 m Or LessTo stiffen weld puddle Adjusting MIG Weld Puddle ConsistencyStop engine To wet out weld puddleOperating Welding Generator DC Polarity/AC SwitchDo not switch under load Remote Amperage/Voltage SwitchRemote Amperage/Voltage Control Weld Current 120 240 Auxiliary Power Receptacles And Circuit BreakersOperating Auxiliary Equipment Gfci Receptacle Option Optional Auxiliary Power ReceptaclesMaintenance and Troubleshooting Maintenance Label Stop engine and let cool Servicing Air CleanerServicing Optional Spark Arrestor Changing Engine Oil, Oil Filter, And Fuel Filter Weld/Power Speed Adjustment Adjusting Engine SpeedIdle Speed Adjustment Trouble Remedy TroubleshootingOverload Protection WeldingSee engine manual Low weld output Check control settingsCheck and clean air cleaner as necessary see Section Check and adjust engine speed see SectionCheck governor according to engine manual Auxiliary PowerCheck receptacle wiring and connections EngineCircuit Diagram For Welding Generator Electrical DiagramST-190 578-B Grounding Generator To Truck Or Trailer Frame Auxiliary Power GuidelinesSelecting Equipment Amperes x Volts = Watts Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Earth ground if supplyingFarm/Home Equipment Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Industrial Motors Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentKVA/HP x HP x Power Required To Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting Requirements240 120 Ground Typical Connections To Supply Standby PowerCurrent Load Watts Amperes Selecting Extension Cord Use Shortest Cord Possible24-Fig Parts ListMain Assembly Dia Part Description Mkgs Quantity Panel, Front w/Components Panel, Front w/Components -1 Item Generator -1 Item Page Page Page Support ServiceYour distributor also gives Miller Electric Mfg. Co Owner’s Record

251 NT specifications

The Miller Electric 251 NT is a highly regarded multi-process welding machine known for its versatility and advanced features, making it an ideal choice for professionals in various industries. With its robust construction and user-friendly interface, the 251 NT provides an efficient solution for MIG, TIG, and Stick welding applications.

One of the main features of the Miller Electric 251 NT is its impressive output range, which allows for welding on a variety of materials and thicknesses. It delivers up to 250 amps of power, enabling users to tackle both thin and thick metals with ease. Additionally, the machine is equipped with an Auto-Set feature, which automatically adjusts the welding settings according to the material thickness and type. This eliminates the guesswork, significantly enhancing productivity and reducing setup time.

Another noteworthy aspect of the Miller Electric 251 NT is its inverter technology. This advanced technology provides a compact, lightweight design without compromising performance. Inverter technology allows for greater energy efficiency, resulting in reduced operational costs over time. The 251 NT also features a Duty Cycle of 60% at 250 amps, which means it can handle demanding tasks while maintaining optimal performance.

The Miller Electric 251 NT is designed with user convenience in mind. The intuitive digital display offers clear visibility of the settings, allowing welders to make quick adjustments. Furthermore, the machine includes a built-in memory function to store frequently used parameters, enhancing workflow efficiency.

Safety is a key component of the 251 NT's design. It comes equipped with various safety features, including overload protection and a thermal overload warning system. These features ensure that the machine operates within safe limits, minimizing the risk of damage and ensuring longevity.

In terms of portability, the Miller Electric 251 NT's lightweight design and integrated handle make it easy to transport between job sites. The durable housing protects the internal components, making it suitable for rigorous use in demanding environments.

Overall, the Miller Electric 251 NT offers a combination of power, flexibility, and ease of use, making it a top choice for welders looking to enhance their capabilities across multiple welding processes. Whether in a professional shop or on a construction site, the 251 NT stands out as a reliable and efficient welding solution.
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