Hobart Welding Products IRONMAN 250 - Manual (Page 14)

OM-192 440 Page 10
3-3. Welding Gun Duty Cycle And Overheating
CAUTION
WELDING LONGER THAN RATED DUTY CYCLE can damage gun and void warranty.
•
Do not weld at rated load longer than shown below.
•
Using gasless flux cored wire reduces gun duty cycle. warn7.1 8/93
Duty Cycle is percentage of 10
minutes that gun can weld at
rated load without overheating.
Continuous Welding
SB1.1 8/93
0
10
Minutes
Definition .023 To .045 in (0.6 To 1.1 mm)
Hard Or Flux Cored Wires
100% Duty Cycle At 200 Amperes
Using CO
2
100% Duty Cycle At 150 Amperes
Using Mixed Gases
.023 To .045 in (0.6 To 1.1 mm) Hard Or Flux Cored Wires
60% Duty Cycle At 300 Amperes
Using CO
2
60% Duty Cycle At 200 Amperes
Using Mixed Gases
6 Minutes Welding 4 Minutes Resting
3-4. Volt-Ampere Curves
Volt-ampere curves show minimum
and maximum voltage and amper-
age output capabilities of unit.
Curves of other settings fall be-
tween curves shown.
va_curve1 4/95 − 192 436