Section 6 − Operation; Controls With Meters - Miller Electric SuitCase X-TREME 12VS Owner's Manual

6-1. Controls With Meters

Internal Side View
SECTION 6 − OPERATION
3 2
1
4
5
6
9
Internal Control Panel
1 Power Control Switch
2 Trigger Hold Switch
Trigger hold allows operator to weld without hold-
ing gun trigger.
To use trigger hold function, place trigger hold
switch in the ON position.
The operator must hold the trigger for a minimum
of 2 seconds, but no longer than 6 seconds be-
fore releasing it. Welding will continue when trig-
ger is released.
To stop welding, press and release the trigger.
3 Jog/Purge Switch
Pressing the Jog switch allows the operator to
jog wire without energizing the contactor or gas
valve.
Pressing the Purge switch allows the operator to
purge gas lines before welding and to preset gas
flow rate at the flowmeter.
4 Voltmeter
Displays actual arc voltage or open circuit volt-
age at the feeder.
5 Wire Speed / Amperage Meter
Displays preset wire speed. While welding in CC
mode, actual wire speed is dependant on arc
voltage. To set wire speed display to: Inches per
Minute or Meters per Minute, see Section 5-9.
Amperage displayed at the feeder is approxi-
mate. Refer to power source for actual amper-
age. To display Amperage, see Section 5-9.
6 Wire Speed Control
Use control to adjust wire speed within the speed
range selected by the wire speed range switch,
located on the inner control panel. Maximum
wire speed may be limited by arc voltage.
When using wire speed dual schedule, the re-
duced wire speed will be 87.5% of the standard
wire speed− See Section 6-3.
7 HI/LO Speed Range Switch
Use switch to select speed range. High range is
100 to 800 Inches per Minute (2.5 to 20.3 Meters
7
per Minute). Low range is 25 to 200 Inches per
8
Minute (0.6 to 5.1 Meters per Minute).
8 CC/CV Switch
Use switch to match feeder with the output of the
power source.
While welding in CC mode, actual wire speed is
dependent on arc voltage.
While welding in CV mode, the wire feeder re-
mains at constant speed and the wire speed is
not dependent on arc voltage. Maximum wire
speed may be limited by arc voltage.
9 Soft Start Switch
The Soft Start feature provides a smooth start
during most weld conditions. When the trigger is
pulled, the wire speed is approximately 50% of
the weld wire speed, as set by the wire speed
control knob. After an arc is established, the wire
speed increases to the weld wire speed.
When using small diameters wire, or with invert-
er power sources, it may be necessary to turn
soft start off to obtain smooth starts.
After adjusting the switches, close and latch the
door before welding.
Ref. 256 622-A / 252 210-B
OM-252 203 Page 21