Cover Removal And Installation; Input Power Selection; Quick Guide To Phase Wiring; Connections To Single Phase Input Power - ESAB A120 Operating Manual

CUTMASTER A120
Most units are shipped from the factory with a 230 Volt
input power cable wired to the input contactor in the
single - phase configuration. The following illustrations
and directions are for changing that configuration to a
different voltage and or to three - phase operation or back
again if a change had already been made.
A. Cover Removal
1. Remove the upper and lower screws which
secure the cover to the main assembly. Do not
loosen the lower screws inside the cut out slots
in the bottom of the cover.
NOTE!
The upper screws and lower screws
are not the same. Do not mix them.
The upper screws are for threading into
the plastic of the front and rear panels.
DO NOT use the finer threaded lower
screws for this.
Upper
Screws
Slots
Lower
Screws
Art # A-08429
2. Carefully pull the Cover up and away from the
unit.
B. Cover Installation
1. Reverse previous procedures for cover installa-
tion.
3-2
C. Input Power Selection
Set the Input Voltage Selection Switch at the rear of the
unit based on the primary input voltage it is connected
to. Low is 208/230 VAC and high is 460 VAC.
D. Quick Guide to Phase Wiring
The following illustration and directions are for changing
phase of the power supply.
Lower
Screws
Single-Phase (1ø) and Jumper Settings
Store copper jumpers on base plate
L1
L2
L3
L4
GND
Single and Three Phase Input Power Wiring
E. Connections to Single Phase Input Power
!
These instructions are for changing the input power and
or cable on the 208/230, 400, 460 VAC Power Supply to
Single - Phase input power.
INSTALLATION
NOTE!
When installing the upper screws, at-
tempt to reuse the original threads. The
easiest way to do this is by turning the
screw counter-clockwise until you feel
the threads line up, then begin to turn
the screw clockwise to tighten. Do not
over tighten.
Art # A-08316
Input Power Cable Connections
L1
L2
L3
L4
NOTE!
There are two jumpers used for the
single phase 230V setting and none for
three phase.
WARNING
Disconnect input power from the power
supply and input cable before attempt-
ing this procedure.
Three-Phase (3ø)
GND
0-5430