Miller Maxstar® 400 TIGRunner DC TIG Welder, 208-600 V #907955001

The Maxstar® 400 TIGRunner mounts the Maxstar 400 DC TIG and Stick inverter and a Coolmate™ PRO 4 water cooler on a four-wheel Runner cart. It delivers 3 to 400 amps for steel and stainless up to 5/8 inch thick. Add coolant and a water-cooled torch for long, high-amperage TIG welds on pipe and pressure work.

Highlights

• Water-Cooled System on One Cart: Welder and cooler ride together on the Runner cart and move through the shop as one unit.
• Cooler Power Supply (CPS): The Maxstar 400 powers the Coolmate PRO 4 through a dedicated receptacle. No separate outlet is needed for the cooler.
• Auto-Line™ Technology: Connects to single-phase or three-phase power from 208 to 600 V with no manual linking.
• High-Speed DC Pulse: Up to 5,000 pulses per second with adjustable peak amperage, peak time, and background amperage.
• QuietPulse™: Sine or Triangular pulse waveshapes produce the quietest pulsed arc.
• Program Memory and Locks/Limits: Save up to 99 named programs, transfer them by USB, and keep operators inside the WPS with locked parameter ranges.
• Pro-Set™: One-press presets for pulse and DIG.
• Blue Lightning™ HF Arc Starter: Reliable non-contact arc starts.
• Stick Capability: Adjustable DIG for 7018 or 6010 electrodes, with Hot Start™ to prevent sticking.

What's Included

• Maxstar® 400 power source
• 8 ft. (2.4 m) primary power cord
• Coolmate™ PRO 4 water cooler
• Runner cart

Coolant and torch are sold separately. Miller recommends Low-Conductivity Antifreeze/Coolant #043810.

Applications

• Process pipe
• Tube and pipe fabrication
• Pressure vessels
• Stainless steel fabrication
• High-amperage production TIG welding

• Specifications
• Owner's Manual

Product Questions and Answers

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