Harbor Freight Tools 55525 manual Operating Instructions, Before You Begin Welding, See Figure K

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OPERATING INSTRUCTIONS

Before You Begin Welding

Good welding requires a high degree of skill and experience. You should practice a few sample welds on scrap metal before you begin welding your first project. Ad- ditional practice periods are recommended whenever you weld a different thickness of material, wire, or weld a different type of connection.

Duty Cycle (Duration of Use)

1.CAUTION! Avoid damage to the Welder by not leaving the unit on for more than the prescribed duty cycle time.

FIGURE K

2.The duty cycle defines the number of minutes, within a 10 minute period, during which a given Welder can safely produce a particular welding current. For example, this Welder, with a 15% duty cycle at 110 Amps (setting Max 2), must be al- lowed to rest for at least 8 minutes and 30 seconds after every minute and 30 seconds of continuous weld at 110 Amps.

(See Figure K.)

3.Failure to carefully observe duty cycle limitations can easily over stress a Welder’s power generation system, contributing to premature Welder failure.

4.This Welder is equipped with an internal thermal protection system to help prevent over stressing the unit. When the unit overheats, it automatically shuts down, then automatically returns to service when it cools down.

Note: Once the unit returns to service, follow a more conservative duty cycle routine to help prevent excess wear to the Welder. (See Figure K.)

	SKU 55525	For technical questions, please call 1-800-444-3353;	Page 17
		Troubleshooting section at end of manual.

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Contents 220 VAC*DUAL MIG Welder For technical questions or replacement parts, please callContents General Safety Rules Product SpecificationsSave this Manual Work AreaPersonal Safety Electrical SafetyTool USE and Care ServiceIndustrial applications must follow Osha guidelines Specific Safety RulesPage Welding Produces toxic fumes and gasses Cylinders can explode when damagedGrounding Unpacking SymbologyExtension Cords Grounded Tools Tools with Three Prong PlugsFace Shield Assembly Assembly InstructionsTo Install a Wire Spool To Attach The HandleSee Figure E To Route The WireFigure F Exercise Extreme Caution Risk of Fire AND/OR Electric ShockNozzle. See Figure F, previous To Change Wire SettingsSee Figure G See Figure H Setting The Gun Polarity For Wire TypeTo Install a Gas Cylinder Before You Begin Welding Operating InstructionsDuty Cycle Duration of Use See Figure KSee Figure L Setting Up The WeldFigure M Holding The Welding TorchHarsgCni ttSe eldW OttomB number is WireTop figures are Voltage On ETPage Bend at joint Weld Diagnosis Weld PenetrationWeld Not Adhering Properly Strike Test PorosityExcessive Spatter When the Weld is Completed Nozzle Inspection, Cleaning, and Replacement INSPECTION, MAINTENANCE, and CleaningContact Tip Inspection, Cleaning, And Replacement Or more for .030Tips .035 or more for .023 TipsPlease Read the Following Carefully Replacing The Welding Torch LinerWiring Schematic Parts Lists and DiagramsPart Description Qty Parts ListAssembly Diagram Assembly Diagram Wire Feed Mechanism Wire feed motor runs but wire does not feed properly TroubleshootingWire creates a bird’s nest During operation Welding arc not stableWire Feeds, but arc does not ignite Welder does not function when switched onTroubleshooting Weak Arc strengthWarranty Wire Feeds, but Shielding gas does not FlowNozzle Plugged Regulator or cylinder valve closed