Miller Bobcat 250 NT, Owner'S Manual

Page: 24 / 80

OM-4403 Page 20
5-2. Typical Stick Welding Connections And Control Settings
Ref. 800 395 / 200 017 / 087 985-A / Ref. S-0653
Stop engine.
This section provides general guide-
lines and may not suit all applications.
The control panel shows the typical
settings for welding with a 7018 (1/8 in)
electrode. Consult the amperage
selection tables below if welding with
other electrodes.
1 Work Clamp
2 Electrode Holder
Connect Work cable to Work terminal and
Electrode holder cable to Electrode termi-
nal on welding generator.
Be sure to use the correct size weld
cables (see Section 4-8).
For best performance, set the Coarse
Range switch to the lowest range that
covers the desired weld amperage.
Use the Fine control to select the de-
sired amperage within the range se-
lected. When properly set, the Fine
control is normally set at 7 or higher.
Typical Settings For 7018 (1/8 in)
Electrode:
>
Set Weld Process Selector switch to
+ Stick position.
>
Set Coarse Range switch to 60-140
(1/8”) position.
>
Set Fine control at 7 or higher for
best results.
1
2
ELECTRODE
DC*
AC
POSITION
PENETRA
TION
USAGE
MIN. PREP, ROUGH
HIGH SPATTER
GENERAL
SMOOTH, EASY,
FAST
LOW HYDROGEN,
STRONG
SMOOTH, EASY,
FASTER
CAST IRON
STAINLESS
DEEP
DEEP
LOW
MED
LOW
LOW
LOW
LOW
ALL
ALL
ALL
ALL
ALL
FLAT
HORIZ
FILLET
ALL
ALL
EP
EP
EP,EN
EP,EN
EP
EP,EN
EP
EP
6010
6011
6013
7014
7018
7024
NI-CL
308L
*EP = ELECTRODE POSITIVE (REVERSE POLARITY)
EN = ELECTRODE NEGATIVE (STRAIGHT POLARITY)
3/32
1/8
5/32
3/16
7/32
1/4
1/16
5/64
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
3/32
1/8
5/32
6010
&
6011
6013
7014
7018
7024
Ni-Cl
308L
50 100 150 200 250 300 350 400 450
ELECTRODE
AMPERAGE
RANGE
DIAMETER
Electrode Selection Tables
Tools Needed:
For best arc starts and best
results using weld and generator
power together, use a low
Coarse Range setting and the
Fine control set at 7 or higher.
3/4 in
Typical Settings For 7018 (1/8 in) Electrode