Miller Electric 12VS - Manual (Page 25)

OM-1500-19 Page 21
SECTION 5 − OPERATION
5-1. Controls With Meters
Ref. 804 006-B
1 Power Control Switch
2 Trigger Hold Switch
Trigger hold allows operator to weld without
holding gun trigger.
To use trigger hold function, place trigger
hold switch in the ON position.
The operator must hold the trigger for a mini-
mum of 2 seconds, but no longer than 6 sec-
onds before releasing it. Welding will contin-
ue when trigger is released.
To stop welding, press and release the trig-
ger.
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 opera-
tor to purge gas lines before welding and to
preset gas flow rate at the flowmeter.
4
Voltmeter
Displays actual arc voltage or open circuit
voltage at the feeder.
5
Wire Speed / Amperage Meter
Displays wire speed in Inches per Minute. To
display wire speed in Meters per Minute, see
Section 4-10.
Amperage displayed at the feeder is approxi-
mate. Refer to power source for actual am-
perage. To display Amperage, see Section
4-10.
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.
7
HI/LO Speed Range Switch
Use switch to select speed range. High
range is 50 to 780 Inches per minute. Low
range is approximately half of high range.
8
CC/CV Switch
Use switch to match feeder with the output of
the power source.
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 approxi-
mately 25% 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 in-
verter power sources, it may be necessary to
turn switch off to obtain smooth starts.
After adjusting the switches, close and latch
the door before welding.
Front Panel
Internal Control Panel
Internal Side View
7
1
2
OFF
3
9
8
4
5
6