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5-8.
Connecting Three-Phase Input Power (Continued)
!
Installation must meet all National and
Local Codes − have only qualified per-
sons make this installation.
!
Disconnect and lockout/tagout input
power before connecting input con-
ductors from unit. Follow established
procedures regarding the installation
and
removal
of
lockout/tagout
devices.
!
Always connect green or green/yel-
low conductor to supply grounding
terminal first, and never to a line ter-
minal.
NOTICE − The Auto-Line circuitry in this unit
automatically adapts the power source to the
Notes
.
A complete Parts List is available at www.MillerWelds.com
primary voltage being applied. Check input
voltage available at site. This unit can be con-
nected to any input power between 120−480
VAC without removing cover to relink the
power source.
See rating label on unit and check input volt-
age available at site.
For Three-Phase Operation
1
Input Power Cord.
2
Disconnect Device (switch shown in
the OFF position)
3
Green Or Green/Yellow Grounding
Conductor
4
Disconnect Device Grounding Terminal
5
Input Conductors (L1, L2 And L3)
6
Disconnect Device Line Terminals
Connect green or green/yellow grounding
conductor to disconnect device grounding
terminal first.
Connect input conductors L1, L2, and L3 to
disconnect device line terminals.
7
Overcurrent Protection
Select type and size of overcurrent protection
using Section 5-6 (fused disconnect switch
shown).
Close and secure door on disconnect device.
Follow established lockout/tagout proced-
ures to put unit in service.
Work like a Pro!
Pros weld and cut
safely. Read the
safety rules at
the beginning
of this manual.
OM-270536 Page 27
input2 2012−05
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Troubleshooting
