Owner`s manual

OM-2226 Page 17

4-5. Duty Cycle And Overheating

ST-189 770-A

Duty Cycle is percentage of 10 min-

utes that unit can weld at rated load

without overheating.

If unit overheats, output stops, a

Help message is displayed (see

Section 7-3), and cooling fan runs.

Wait fifteen minutes for unit to cool.

Reduce amperage or voltage, or

duty cycle before welding.

NOTICE − Exceeding duty cycle

can damage unit and void warranty.

150 A @ 60% Duty Cycle For Stick Process (Other Voltages)

6 Minutes Welding 4 Minutes Resting

Overheating

A or V

Reduce Duty Cycle

Minutes

175 A @ 60% Duty Cycle For TIG Process (Other Voltages)

90 A @ 100% Duty Cycle For 115 Volt Single-Phase Stick Process

125 A @ 100% Duty Cycle For 115 Volt Single-Phase TIG Process