AC/DC TIG WELDER - Harbor Freight Tools
AC/DC TIG WELDER - Harbor Freight Tools
AC/DC TIG WELDER - Harbor Freight Tools
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Welding Gun Duty Cycle And Overheating:<br />
1. IMPORTANT! Welding longer than the rated duty cycle for this Welding<br />
equipment can damage the Gun and void its warranty.<br />
2. Duty cycle is a percentage of 10 minutes that the unit can weld at its rated load<br />
without overheating. (See Figure G.)<br />
3. If the unit should overheat, the thermostat opens, output stops, and the cooling<br />
fans continue to run. Wait fifteen minutes for the unit to cool. Reduce amperage<br />
or voltage, or duty cycle, before welding.<br />
4. This Welder, at its 40% duty cycle, can run continuously under load for 4 minutes<br />
out of each 10 minute period. (See Figure G.)<br />
5. NOTE: Higher duty cycles can be used at lower currents.<br />
(See Rating Plate information on Front Panel.)<br />
40% Duty Cycle at 200 Amperes (<strong>AC</strong>) Using Mixed Gases<br />
4 Minutes Welding 6 Minutes Resting<br />
Relation Between Duty Cycle And Weld Amperes.<br />
<strong>DC</strong><br />
<strong>AC</strong><br />
DUTY CYCLE (%)<br />
FIGURE G<br />
WELDING CURRENT (AMPs)<br />
SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 16
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