Welding Gun Duty Cycle And Overheating; Volt-Ampere Curves - Hobart Welding Products IronMan 250 Owner's Manual

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.
Definition
0
10
Minutes
Duty Cycle is percentage of 10
minutes that gun can weld at
rated load without overheating.

3-4. Volt-Ampere Curves

OM-192 440 Page 10
.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
Continuous Welding
.023 To .045 in (0.6 To 1.1 mm) Hard Or Flux Cored Wires
60% Duty Cycle At 300 Amperes
Using CO
60% Duty Cycle At 200 Amperes
Using Mixed Gases
6 Minutes Welding
Volt-ampere curves show minimum
and maximum voltage and amper-
age output capabilities of unit.
Curves of other settings fall be-
tween curves shown.
warn7.1 8/93
2
4 Minutes Resting
SB1.1 8/93
va_curve1 4/95 − 192 436