Hobart Welding Products OM-947 212 149D manual Specifications, Duty Cycle And Overheating

SECTION 3 − SPECIFICATIONS

3-1. Specifications

Rated Welding	Amperage	Maximum Open-	Amperes Input at			Weight	Overall
			Rated Load Output
		Circuit Voltage		KVA	KW
Output	Range		115 V, 60 Hz, Single-			W/ Gun	Dimensions
		DC
			Phase
							Length: 16-7/8 in
90 A @ 19 Volts DC,			20	2.90	2.50	50 lb	(429 mm)
20% Duty Cycle							Width: 9-7/8 in
	30 − 125	29				(22.7 kg)
63 A @ 21 Volts DC,							(251 mm)
			15*	2.20*	1.77*
20% Duty Cycle*							Height: 12-1/8 in
							(308 mm)
	Flux Cored	Solid/		Wire Feed Speed Range
Wire Type		Stainless**
And Dia
	.030 − .035 in	.024 − .030 in	0 − 500 IPM (0 − 13 m/min) At No Load
	(0.8 − 0.9 mm)	(0.6 − 0.8 mm)	0 − 415 IPM (0 − 11 m/min) Feeding Wire

* CSA Rating

** When shielding gas is required, MIG conversion kit 195 158 must be installed.

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
Amperes										unit to cool. Reduce amperage or
	200									duty cycle before welding.
	135									Y Exceeding duty cycle can
										damage unit or gun and void
Output	100									warranty.
	80
	60
	40
	20
	10	2	4	6	8	10		40	60	80 100
	1						20
				Duty Cycle %
			20% duty cycle at 90 amps
		2 Minutes Welding					8 Minutes Resting
Overheating
						0				A or V
							15			OR
					Minutes				Reduce Duty Cycle
										duty1 4/95 − 210 517

OM-947 Page 9