Miller Electric Millermatic 212 Auto-Set Owner's Manual download pdf (Page 16)

.A complete Parts List is available at www.MillerWelds.com

OM-238 118 Page 12

4-2. Welding Power Source Duty Cycle And Overheating

6 Minutes Welding 4 Minutes Resting

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

voltage, or duty cycle before

welding.

NOTICE − Exceeding duty cycle

can damage unit and void warranty.

Overheating

A or V

Reduce Duty Cycle

Minutes

duty1 4/95 − 204 075

30% Duty Cycle At 210 Amperes60% Duty Cycle At 160 Amperes

3 Minutes Welding 7 Minutes Resting

4-3. Volt-Ampere Curves

Volt-ampere curves show minimum

and maximum voltage and

amperage output capabilities of

unit. Curves of other settings fall

between curves shown.

va_curve1 4/95 − 238 553-A

0 100

200 300

AMPERES

VOLTS

1 ... 15 16 17 ... 48

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Miller Electric Millermatic 212 Auto-Set Owner's Manual Page 16