Industrial Applications Quick Specs Precision Fabrication Petro Chemical Aerospace Food/Beverage Industry Dairy Shipboard DC TIG (GTAW) Pulsed TIG (GTAW-P) Stick (SMAW) Air Carbon Arc (CAC-A) TIG/Stick Welding Power Source Input Power 208 – 575 V, 3- or 1-Phase Power Amperage Range 1 – 280 A (DC) Rated Output 200 A at 28 V, 60% Duty Cycle Net Weight 47 lb. (21.3 kg) Upgradeable and expandable. Front panel memory card data port provides the ability to easily upgrade software and expand product features. DC TIG Features Pulse. Pulsing can increase puddle agitation, arc stability and travel speeds while reducing heat input and distortion. DX models provide extended ranges. Visit MillerWelds.com/TIGSoftware for the latest software upgrades and expansions. Exceptionally smooth and precise arc for welding exotic materials. Pro-Set™ eliminates the guesswork when setting weld parameters. Use Pro-Set when you want the speed, convenience and confidence of preset controls. Simply select the feature and adjust until Pro-Set appears on the display. DC Stick Features Dual schedule allows operators to switch welding parameters for specific electrodes without readjusting the machine, minimizing downtime and enhancing quality. Base model only (not DX). Sleep timer conserves electricity. This programmable feature will power down the machine if it sits idle for a specific time. Maxstar 280 Allows for any input voltage hookup (208 – 575 V) with no manual linking, providing convenience in any job setting. Ideal solution for dirty or unreliable power. Cooler Power Supply (CPS). An integrated 120-volt dedicated-use receptacle to power the Coolmate™ 1.3. The power switch on the Maxstar also activates the receptacle to help prevent torch failure. Available on select models, see page 6. Wind Tunnel Technology™ protects internal electrical components from airborne contaminates, extending the product life. DIG control allows the arc characteristics to be changed for specific applications and electrodes. Lower the DIG setting for smooth running electrodes like E7018 and increase the DIG setting for stiffer, more penetrating electrodes like E6010. Fan-On-Demand™ power source cooling system operates only when needed, reducing noise, energy use and the amount of contaminants pulled though the machine. Hot Start™ adaptive control provides positive arc starts without sticking. Meter calibration allows digital meters to be calibrated for certification. Stick-Stuck detects if the electrode is stuck to the part and turns the welding output off to safely and easily remove the electrode. Menu selectable. Blue Lightning™ high-frequency (HF) arc starter for non-contact arc initiation. Provides more consistent arc starts and greater reliability compared to traditional HF arc starters. Power source is warranted for 3 years, parts and labor. Equipment Sales US and Canada An ITW Company 1635 West Spencer Street P.O. Box 1079 Appleton, WI 54912-1079 USA Phone: 866-931-9730 FAX: 800-637-2315 International Phone: 920-735-4554 International FAX: 920-735-4125

Specifications (Subject to change without notice.) Welding Mode Input Power Welding Amperage Range Stick (SMAW) Rated Output Amps Input at Rated Load Output, 50/60 Hz 208 V 230 V 400 V 460 V 575 V KVA KW *Refer to owner’s manual for 208 V output ratings and duty cycle. **Low OCV sense voltage for Stick and Lift-Arc ™ TIG. IP23 rating — This equipment is designed for outdoor use. It may be stored, but is not intended to be used outside during precipitation unless sheltered. Operating temperature range is 14 to 104° F (-10 to 40° C). Storage temperature range is -22 to 149° F (-30 to 65° C). Portions...

• Two-piece torch head and exclusive Super Cool™ Technology provides additional surface area to increase cooling efficiency and capacity • Torch body includes an anti-rotation feature and multi-position locking to prevent handle movement during welding and improve operator control • Mechanical fittings provide a secure gas and water connection to prevent leakage and allow easy hose replacement Cooling Method Electrode Range TIG Upgrade Chart Why Upgrade? Thickness Capacity Maxstar 280 DX Maxstar 280 Benefits Duty Cycle Blue Lightning™ HF and Lift-Arc™ Precision Controls Precise adjustments can...

Maxstar 280 Control Panel ® 7. Memory Card Port 4. Output Contactor “On” Indicator 5. DC TIG (HF Start) Process Menu Parameters Amperage 1– 280 A** Pulse* Off – 250 PPS Postflow Auto/Off – 50 seconds 11. DC TIG (Lift-Arc) Process Menu Parameters Amperage 1 – 280 A** Pulse* Off – 250 PPS Postflow Auto/Off – 50 seconds 6. DC Stick (Schedule 1) Process Menu Parameters Amperage 5 – 280 A DIG* Off –100% 12. DC Stick (Schedule 2) Process Menu Parameters Amperage 5 – 280 A DIG* Off –100% 13. Process Selector *Pro-Set parameter selectable. **Amperage range is tungsten size dependent. User Menu (Hold...

Maxstar 280 DX Control Panel ® 7. Memory Card Port TIG: HF Impulse, Lift-Arc STICK: Adaptive Hot Start Standard Remote, 2T Trigger Hold, Output ON 6. Pulser Control Pulses per Second* DC: 0.1 – 500 PPS Peak Time* 5 – 95% Background Amps* 5 – 95% 10. Amperage Button 11. Gas/DIG Preflow Postflow DIG* 0.0 – 25.0 seconds Auto/Off – 50 seconds Off –100% 12. Sequencer Control Initial Amps 1– 280 A Initial Slope 0.0 – 25.0 seconds Weld Time 0.0 – 999 seconds Final Slope 0.0 – 25.0 seconds Final Amps 1– 200 A *Pro-Set parameter selectable. User Menu (Press Gas and Amperage buttons.) Tech Menu (Hold Gas...

Build an Air-Cooled Package Select desired stock number for each step. Step #1 • Select Maxstar Maxstar 280 Maxstar 280 with CPS Maxstar 280 DX Maxstar 280 DX with CPS Step #2 • Select Contractor Kit Note: For models without the Cooler Power Supply (CPS), the Coolmate 1.3 must be powered through an external 115-volt facility power. Maxstar comes with adjustable shoulder strap, 8-ft. primary cord and two Dinse 50-mm connectors. Foot Control Contractor Kit Fingertip Control Contractor Kit Build a Water-Cooled Package Select desired stock number for each step. #907 538 002 Maxstar 280 TIGRunner®...