The DAW500SA4 Diesel-Powered Welder/Generator from Multiquip stands at the top tier of heavy-duty, mobile welding power and AC generator solutions for industrial, construction, oil/gas, pipeline, and emergency field operations. Renowned for outstanding arc stability, robust construction, and the efficiency of a clean-burning Kubota diesel engine, the DAW500SA4 is engineered to power through the most demanding welding and auxiliary power tasks with unmatched reliability and longevity.

Product Overview

As a true dual-purpose machine, the DAW500SA4 delivers both up to 500 amps of DC welding current and 3 kW of clean, regulated 120/240V AC generator power—enabling operators to weld, run tools, or support critical jobsite systems simultaneously from a single, efficient unit. Its design emphasizes maximum output, proven diesel economy, operator safety, and compact, easily trailer/mounted portability. With simultaneous AC/DC operation, this unit supports multiple tools and welding processes in one compact package.

Core Features

• Industry-Leading Welding Output: Delivers up to 500 amps DC for superior SMAW (stick), FCAW, GMAW (MIG), GTAW (TIG), and ACAC welding—making it suitable even for major structural fabrication, pipeline welds, heavy repair, and gouging.

• Clean Kubota Diesel Engine: Tier 4 Final EPA-compliant for reduced emissions, longer life, and lower fuel consumption; reliable electric start.

• Generator Power: 3kW, 120/240V with tight voltage regulation (±10%) supplies stable power for lights, grinders, power tools, pumps, or sensitive electronics.

• Simultaneous AC/DC Usage: Run AC power and welding together—greatly expanding jobsite flexibility for solo operations or crew support.

• Full Instrumentation: Digital DC voltmeter and ammeter, user-friendly panel, and remote control compatibility for demanding, precision welds.

• Safety and Durability: Lifting bail, external oil/fuel drains, robust frame, and operator guarding maximize transport safety and on-site durability.

• Trailer-Ready Footprint: ~941–983 lbs, fits standard heavy-duty Multiquip trailers for fast deployment or repositioning.

• Accessory Ready: Accepts wire remote, cable carriers, toolboxes, block/fuel heaters, battery trainers, and more for custom fleet needs.

Technical Specifications

Performance Benefits & Professional Advantages

• Power for Any Welding Need: Easily handles pipeline, heavy structural, bridge, equipment repair, or fabrication across CC (constant current) and CV (constant voltage) settings for every rod, electrode, or process.

• Clean AC for Tools: 3 kW generator is perfect for grinders, power tools, small pumps, work lights, and field chargers on isolated or off-grid sites.

• Field-Ready Portability: Compact, robust footprint allows winch-on, lift bail, or trailer mount; perfect for fleets, mechanical/plumbing contractors, and site repair teams.

• Operator Safety: GFCI outlets, full instrumentation, NEMA-rated plugs, and reliable grounding meet jobsite regulations.

• Cost & Emissions Savings: The Kubota diesel Tier 4F engine offers better fuel economy and environmental compliance than older or gasoline-driven units—lowering both running costs and regulatory headaches.

Applications

• Pipeline & Field Welding: Easily portable for on-site pipe, oil/gas, and infrastructure work requiring high amperage or long arc lengths.

• Construction Structural Steel: Ideal for building sites needing multiple processes, high amperage, and generator backup for tools.

• Industrial & Plant Maintenance: Critical for repairs where AC tools and welding must be operated simultaneously.

• Disaster Response: Durable enough for emergency power and field welds during outages, floods, or storm response.

• Rental & Fleet Operations: Common in rental houses, national contractors, DOT, and fleet operations thanks to simplicity, reliability, and power.

User & Industry Reviews

• Dependability: Operators consistently praise the DAW500SA4 for its “smooth, easy arc starts” and “low-maintenance diesel” even in extreme field conditions.

• Versatility: “Running grinders, lights, and welding at once—never let us down,” note field service techs and structural welders.

• Fleet Favorite: Rental and project managers value its rugged frame and easy integration with Multiquip trailers, remote kits, and cable accessories.

• Long Service Life: Kubota diesel is cited for years—even decades—of voltage-stable runtime and steady welding output under relentless field use.

Maintenance & Operational Tips

• Check and refill diesel fuel, oil, and coolant per manufacturer’s intervals.

• Clean/inspect air filter and exhaust system especially in dusty jobsite situations.

• Grease/lube trailer axles and mounting points if in mobile setups.

• Test GFCI and all outlets before site deployment.

• Monitor DC meter calibration and panel readouts for output accuracy.

• Store covered/off-ground in wet or winter climates to avoid corrosion on connections.

Frequently Asked Questions

Q: What welding processes are supported?
A: SMAW, FCAW, GMAW, GTAW, and ACAC—virtually every common stick, wire, and TIG/arc process.

Q: Does it support remote weld amperage adjustment?
A: Yes, with the DAWWRKIT500 remote accessory.

Q: How long can it run full load on one tank?
A: About 14–16 hours at rated consumption (0.66 gph, 9.5 gal tank).

Q: Does the generator run when you weld?
A: Yes; outputs are simultaneous—support lights, tools, or site support while welding is in progress.

Conclusion

The DAW500SA4 Diesel-Powered Welder/Generator is the contractor and fleet choice for heavy-duty, all-process welding with generator backup. With 500 amps of stable DC output, simultaneous 3kW AC power, industry-preferred Kubota diesel, versatile safety/remote options, and a rugged, mobile frame, it is the serious professional’s foundation for pipeline, construction, plant, disaster recovery, and rental fleet excellence—project after project, site after site.