Miller Electric OM-227 398D Introduction, Specifications, Duty Cycle And Overheating, Torch Only

SECTION 3 − INTRODUCTION

3-1. Specifications

Model	Welding Output Range	Electrode	Wire Feed	Net Weight
		Wire Diameter	Speed Range	(Torch Only)
		Capacity
XR-Aluma-Pro Gun	300 A at 100% Duty Cycle	.030 To 1/16 in	70 To 900 ipm	2.5 lb (1.1 kg)
(Air Cooled)	with 15, 25 or 35 ft	(0.8 To 1.6 mm)	(1.8 To 23 mpm)	(less cables)
	(4.6 or 7.6 m) gun	aluminum wire
XR-Aluma-Pro Gun	400 A at 100% Duty Cycle	.030 To 1/16 in	70 To 900 ipm	2.9 lb (1.3 kg)
(Water Cooled)	with 15, 25 or 35 ft	(0.8 To 1.6 mm)	(1.8 To 23 mpm)	(less cables)
	(4.6 or 7.6 m) gun	aluminum wire

.When changing 1/16 in (1.6 mm) wire, kit 230708 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.

NOTICE − Exceeding duty cycle can damage unit and void warranty.

Air-Cooled Models

100% Duty Cycle At 300 Peak Amperage Using 100% Argon Gas w/15, 25 Or 35 Foot Guns

Continuous Welding

Water-Cooled Models

100% Duty Cycle At 400 Peak Amperage Using 100% Argon Gas w/15, 25 Or 35 Foot Guns

Continuous Welding

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