OM-223 Page 19
Continuous Welding
3-2. Duty Cycle And Overheating
Duty Cycle is percentage of 10 min-
utes 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.
Y
Exceeding duty cycle can
damage unit and void war-
ranty.
Overheating
0
15
V
OR
Reduce Duty Cycle
Minutes
duty1 4/95 / SA-168 918
100% Duty Cycle
SECTION 4
−
MAINTENANCE & TROUBLESHOOTING
4-1. Routine Maintenance
Y
Disconnect power before maintaining.
3 Months
Replace
Unreadable
Labels
Clean And
Tighten
Weld
Terminals
Repair Or
Replace
Cracked
Weld
Cable
6 Months
Blow Out Or Vacuum
Inside,
During Heavy Service,
Clean Monthly
OR