Harbor Freight Tools 91146 operating instructions Figure J, Welding Gun Duty Cycle And Overheating

Page 18

7.Adjust the flow rate of the gas by turning the Flow Adjust. The typical flow rate is 20 CFH (cubic feet per hour). Check the welding wire manufacturer’s recommended flow rate. (See Figure J.)

PRESSURE REGULATOR

FLOW METER

(43)

GAS HOSE

(202A)

FIGURE J

CYLINDER CAP

CYLINDER VALVE

ARGON GAS

OR

MIXED GAS

CHAIN

GAS INLET VALVE

(29)

BACK PANEL (30)

Welding Gun Duty Cycle And Overheating:

1.IMPORTANT! Welding longer than the rated duty cycle for this Welding equipment can damage the Gun and void its warranty.

2.Duty cycle is a percentage of 10 minutes that the unit can weld at its rated load without overheating. (See Figure L, page 20.)

3.If the unit should overheat, the thermostat opens, output stops, and the cooling fans continue to run. Wait fifteen minutes for the unit to cool. Reduce amperage or voltage, or duty cycle, before welding.

4.This Welder, at its 60% duty cycle, can run continuously under load for 6 minutes out of each 10 minute period. (See Figure L.)

5.NOTE: Higher duty cycles can be used at lower currents. (See Rating Plate information on Front Panel.)

SKU 91146

For technical questions, please call 1-800-444-3353.

PAGE 18

Image 18
Contents MIG Welder 250 AMP Save this Manual Product SpecificationsGeneral Safety Rules UnpackingElectrical Safety Personal SafetyTool USE and Care Service Grounding Grounded Equipment Equipment with Three Prong PlugsSymbology Extension CordsCords Longer than 25’ should not be Used with this Welder Specific Safety Rules Page Page SKU For technical questions, please call Product Overview Figure DBack Panel Controls Figure EAssembly Instructions To Attach a Power Cord PlugTo Attach The Rear Wheels And Front Castor Wheels To Attach The Gun Power Cable And Ground Clamp Cable To Install Welding Wire Spool And Adjust Wire TensionWire Spool To Install a Gas Cylinder See Figures FFigure J Welding Gun Duty Cycle And OverheatingFour Welding Features TimeInterval Minutes Welding Troubleshooting Guide Welding Machine Figure NTroubleshooting Guide Welding GUN & Wire Drive INSPECTION, MAINTENANCE, and Cleaning Welding MachineINSPECTION, MAINTENANCE, and Cleaning Welding GUN Figure OFigure P Please Read the Following Carefully Parts List Welding Machine Assembly Diagram Welding MachineParts List Welding GUN DescriptionAssembly Diagram Welding GUN 201A Ground Clamp Cable not Shown 202A GAS Hose not ShownElectrical Schematic Welding Machine