Miller Electric OM-227 398D manual Operation, Gun Controls, Gun Pressure Roll Tension Setting

SECTION 5 − OPERATION

5-1. Gun Controls

1 Trigger

1

2

Press trigger to energize welding power source contactor (if applicable), start shielding gas flow, and begin wire feed.

Switches inside the wire feeder can be set to provide timed shielding gas preflow and postflow when trigger is pressed and released. When this feature is turned Off, no preflow or postflow is provided for the welding operation.

2 Gun Wire Speed Control

Use control to fine adjust wire feed speed set on XR-Control. Gun Wire Speed Control has 3-3/4 turns of adjustment from minimum to maxi- mum.

Ref. 804 545-B

5-2. Gun Pressure Roll Tension Setting

. Aluminum series specific - Pressure roll tension setting ensures smooth wire feeding

		action.
		. Gun Pressure Roll Tension is
		factory set to 4XXX.
		1 Pressure Roll Adjustment
		Screw
		Wire tension should be set to 4XXX
	1	for 4000 series aluminum wire.
		Rotate Pressure Roll Adjustment
		Screw fully counterclockwise until
		indicator line on adjustment knob
		lines up with indicator line on handle
		in the 4XXX position.
		Wire tension should be set to 5XXX
		for 5000 series aluminum and stain-
		less wire.
		Rotate Pressure Roll Adjustment
		Screw fully clockwise until indicator
		line on adjustment knob lines up
Tools Needed:		with indicator line on handle in the
		5XXX position.
		Ref. 804 545-B

OM-227 398 Page 13