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3-2. Duty Cycle And Overheating

Overheating

SECTION 4 − MAINTENANCE & TROUBLESHOOTING

4-1. Routine Maintenance

Minutes

Y Disconnect power before maintaining.

Replace

Unreadable

Labels

100% Duty Cycle

Continuous Welding

Reduce Duty Cycle

3 Months

Repair Or

Replace

Cracked

Weld

Cable

6 Months

Blow Out Or Vacuum

Inside,

During Heavy Service,

Clean Monthly

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.

duty1 4/95 / SA-168 918

Clean And

Terminals

OM-223 Page 19

Tighten

Weld