OM-235 825 Page 12
3-3. Duty Cycle And Overheating
Duty Cycle is percentage of 10
minutes that unit can weld at rated
load without overheating.
If unit overheats, thermostat(s)
opens, output stops, and cooling
fan runs. Wait fifteen minutes for
unit to cool. Reduce amperage or
duty cycle before welding.
NOTICE
−
Exceeding duty cycle
can damage unit or gun and void
warranty.
Overheating
0
15
A or V
OR
Reduce Duty Cycle
Minutes
duty1 4/95
−
221 229-A
10
100
% DUTY CYCLE
60
70
80
90
100
120
WELD AMPERES
115 VAC DUTY CYCLE
130
140
110
% DUTY CYCLE
10
100
100
120
140
160
180
200
WELD AMPERES
230 VAC DUTY CYCLE
