Section 5 − operation, 1. gun controls, 2. gun pressure roll tension setting – Miller Electric OM-227 398D User Manual

Page 17

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OM-227 398 Page 13

SECTION 5 − OPERATION

5-1. Gun Controls

1

Trigger

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.

1

2

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

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

with indicator line on handle in the

5XXX position.

1

Ref. 804 545-B

Tools Needed:

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