Harbor Freight Tools 61849 User Manual - Page 14

SAFETY SETUP Weld Settings Chart NOTE: The numbers within the spaces are the approximate wire feed settings recommended* for this wire size and material thickness. Material Thickness (Steel) 18 Gauge 16 Gauge 14 Gauge 1/8" 3/16" MIN current MAX current 0.030″ Wire Size (Flux-Core, Mild Steel) 1.5 speed 2 speed 4 speed 8 speed 9 speed 0.035″ Wire Size (Flux-Core, Mild Steel) 1.5 speed 2 speed 3 speed 8 speed 9.5 speed * This chart is only intended to show general guidelines for different wire sizes and for different thicknesses of material. The settings should only be used at the beginning of a weld and must be adjusted after stopping and carefully inspecting the weld. Proper welding takes experience. Duty Cycle (Duration of Use) Avoid damage to the Welder by not welding for more than the prescribed duty cycle time. The Duty Cycle defines the number of minutes, within a 10 minute period, during which a given welder can produce a particular welding current without overheating. For example, this Welder with a 20% duty cycle at rated output (90 A) must be allowed to rest for at least 8 minutes after every 2 minutes of continuous weld. Failure to carefully observe duty cycle limitations can easily over-stress a welder's power generation system contributing to premature welder failure. GUN 20% Rated Duty Cycle at 90 A output 2 minutes welding followed by at least 8 minutes of rest This Welder has an internal thermal protection system to help prevent this sort of over-stress. When the unit overheats, it automatically shuts 90 AMP FLUX WIRE WELDER ITEM 61207 down and the Overload Indicator lights. The Welder automatically returns to service after cooling off. ON MIN Rest the Gun on an electrically non-conductive, heat-proof surface, such as a concrete slab, well clear of the ground clamp while allowing the Welder to cool with the Power Switch on, so that the internal Fan will help cool the Welder. When the Welder canWIRE FEED SPEED be used again, use shorter welding periods and OFF MAX Specifications Wire 0.030" - 0.035" Flux-Core Capacity 18 Ga. - 3/16" Steel Plate Weldable Mild, Low Alloy Steel Materials (Not for Aluminum or Stainless Steel) longer rest periods to prevent needless wear. GROUND 120V~ 60Hz 20A Gun concrete slab (or other heat-proof, non-conductive surface) BASIC WELDING WELDING TIPS MAINTENANCE Page 14 For technical questions, please call 1-888-866-5797. Item 61849