Duty Cycle And Overheating - Hobart Handler 140 Owner's Manual

4-2. Duty Cycle And Overheating

200
140
100
80
60
40
20
10
2
1
Overheating
OM-925 Page 12
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4 6 8 10
Duty Cycle %
20% duty cycle at 90 amps
2 Minutes Welding
0
Minutes
40 60 80 100
20
8 Minutes Resting
15
OR
Reduce Duty Cycle
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.
A or V
duty1 4/95 − 217 623-A