Miller Dialarc 250 AC/DC Owner's Manual - Page 18

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Miller Dialarc 250 AC/DC Owner's Manual

4-9. Connecting Weld Output Cables

Tools Needed:
3/4 in. (19 mm)
!
Turn off power before connecting to
weld output terminals.
!
Failure to properly connect weld
cables may cause excessive heat
and start a fire, or damage your ma-
chine.

4-10. Connecting To Weld Output Terminals

1
Tools Needed:
3/4 in.
OM-321 Page 14
4
1
Do not place
anything between
weld cable terminal
and copper bar.
2
3
Correct Installation
1
Weld Output Terminal
2
Supplied Weld Output Terminal Nut
3
Weld Cable Terminal
4
Copper Bar
Remove supplied nut from weld output ter-
minal. Slide weld cable terminal onto weld
2
Incorrect Installation
output terminal and secure with nut so that
weld cable terminal is tight against copper
bar. Do not place anything between weld
cable terminal and copper bar. Make
sure that the surfaces of the weld cable
terminal and copper bar are clean.
3
4
803 778-B
!
Turn off power before con-
necting to weld output termi-
nals.
!
Do not use worn, damaged,
undersized, or repaired
cables.
For DC Weld Output
1
Negative (−) Weld Output
Terminal
2
Positive (+) Weld Output
Terminal
For Electrode Positive (DCEP),
connect work cable to Negative (−)
terminal and electrode holder cable
to Positive (+) terminal.
For Electrode Negative (DCEN),
reverse cable connections.
For AC Weld Output
3
Work Weld Output Terminal
4
Electrode Weld Output
Terminal
Connect work cable to Work
terminal and electrode cable to
Electrode terminal.
Close access door.
!
Use only one set of terminals
at a time. Range Selector
switch S2 is only high/low
range; both sets of output
terminals are energized all
the time.
800 052-A / 802 939