Weld Output Controls - Miller Electric 250 Owner's Manual

6-2. Weld Output Controls

1 Weld Process Selector Switch
NOTICE − Do not switch while welding.
Use switch to select type of weld output.
Wire (GMAW) Welding: Use a positive (+)
position for Direct Current Electrode Positive
(DCEP) and a negative (−) position for Direct
Current Electrode Negative.
Stick (SMAW) and TIG (GTAW Welding): Use
a positive (+) position for Direct Current Elec-
trode Positive (DCEP) and a negative (−) posi-
tion for Direct Current Electrode Negative.
Use AC position for alternating current.
1
2 Coarse Range Switch
NOTICE − Do not switch while welding.
Use switch to select weld amperage range
when Weld Process Selector switch is in Stick/
Tig position, or voltage range when switch is in
Wire position.
.
For best arc starts and when using weld
and generator power together, use a low
Coarse Range setting with the Fine con-
trol set at 7 or higher.
.
A complete Parts List is available at www.MillerWelds.com
2 3
3 Fine Control
Use control to select weld amperage (Stick/
Tig) or voltage (Wire) within the range selected
by the Coarse Range switch. Control may be
adjusted while welding.
Set control at 10 for maximum generator
power.
Weld output would be about 124 A DC based
on control settings shown (80% of 60 to 140
A). Settings shown are typical for welding with
a 7018 (1/8) electrode.
.
See Sections 6-3 thru 6-5 for typical pro-
cess connections and control settings.
Ref. 228 647-A
OM-217 455 Page 21