Hobart Welding Products 125 manual Duty Cycle And Overheating, Volt-Ampere Curves, Warranty

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4-2. 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)
			200													opens, output stops, and cooling
		Amperes														fan runs. Wait fifteen minutes for
			135													unit to cool. Reduce amperage or
																duty cycle before welding.
			100													NOTICE − Exceeding duty cycle
		Output	80													can damage unit or gun and void
			60													warranty.
			40
			20
			10			2		4	6		8 10			40	60	80100
			1										20
									Duty Cycle %
								20% duty cycle at 85 amps
						2 Minutes Welding						8 Minutes Resting
	Overheating
											0					A or V
												15				OR
										Minutes					Reduce Duty Cycle
																duty1 4/95 − 210 517-B
4-3.		Volt-Ampere Curves
	28															The volt-ampere curves show the
																minimum and maximum voltage
	26															and amperage output capabilities of
																the welding power source. Curves
																of other settings fall between the
	24															curves shown.
	22
Voltage	20
	18
	16
	14
	12															Range 1
	10															Range 2
																Range 3
	8															Range 4
		0	10	20	30	40	50		60	70	80	90	100	110	120	130
									Amperage
																ssb1.1 10/91 − 210 518-B
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