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A-2
INSTALLATION
WARNING
ELECTRIC SHOCK can kill.
• TURN THE INPUT POWER OFF AT
THE DISCONNECT SWITCH BEFORE
ATTEMPTING TO CONNECT OR DIS-
CONNECT INPUT POWER LINES, OUTPUT
CABLES, OR CONTROL CABLES.
• Only qualified personnel should perform this
installation.
• Connect the green lead of the power cord to
ground per U.S. National Electrical Code.
--------------------------------------------------------------------
Select Suitable Location
The Invertec EX350i will operate in harsh environ-
ments. Even so, it is important that simple preventa-
tive measures are followed in order to assure long life
and reliable operation.
• The machine must be located where there is free cir-
culation of clean air such that air movement in the
back, out the sides and bottom will not be restricted.
• Dirt and dust that can be drawn into the machine
should be kept to a minimum. Failure to observe
these precautions can result in excessive operating
temperatures and nuisance shutdown.
• Keep machine dry. Shelter from rain and snow. Do
not place on wet ground or in puddles.
Stacking
EX350i cannot be stacked.
Tilting
Place the machine directly on a secure, level surface
or on a recommended undercarriage. The machine
may topple over if this procedure is not followed.
INPUT AND GROUNDING CONNECTIONS
• Only a qualified electrician should connect the
EX350i. Installation should be made in accordance
with the U.S. National Electrical Code, all local
codes and the information detailed below.
• When received directly from the factory, multiple
voltage machines are internally connected for
460VAC. If 460VAC is the desired input, then the
machine may be connected to the power system
without any setup required inside the machine.
• Initial 200VAC - 415VAC and 575VAC operation will
require an Input voltage panel setup.
• Open the access panel on the rear of the machine.
• For 200 or 230: Position the large switch to 200-230.
For higher voltages: Position the large switch to 380-575.
• Move the "A" lead to the appropriate terminal.
POWER CORD CONNECTION
A 25 ft. (7.6m) power cord is provided and wired into
the machine. Follow the power cord connection
instructions. Incorrect connection may result in equip-
ment damage.
INSTALLATION
S
S
P
P
INGLE
INGLE
HASE
HASE
• Connect green lead to ground per U.S. National Electrical
Code.
• Connect black and white leads to power.
• Wrap red lead with tape to provide 600V insulation.
T
P
HREE
HASE
• Connect green lead to ground per U.S. National
Electric Code.
• Connect black, red and white leads to power. Install
in accordance with all local and national electric
codes.
CONNECTIONS OF WIRE FEEDERS TO EX350i
LN-25 Connection Instructions
1. Turn the EX350i power switch "off".
2. Connect the electrode cable to the output terminal
of polarity required by electrode. Connect the work
lead to the other terminal.
3. LN-25 with Remote Control options can be used
with the EX350i. The 14 pin (K444-2) remote can
be connected directly to the 14 pin amphenol. The
42 Volt Remote Voltage and Output Control (K624-
1) Kit can be connected to the EX350i 24/42 VAC
amphenol using Remote Control Cable assembly
K627- [ ]. LN-25s with a K431-1 remote kit can be
connected to the 24/42 VAC amphenol using a
K432 cable and a K876 adapter. (See connection
diagram S19899) to connect it to one of the 14-pin
amphenols. Or the K432 cable could be modified
with a K867 Universal Adapter Plug (See connec-
tion diagram S19405) to connect it to the 24/42
VAC 14-pin amphenol.
LN-7 Connection Instructions
1. Turn the EX350i power switch "off".
2. Connect the K480 control cable from the LN-7 to
the EX350i 115 VAC control cable connector.The
control cable connector is located at the rear of the
EX350i.
3. Connect the electrode cable to the output terminal
of polarity required by electrode. Connect the work
lead to the other terminal
4. Set the meter polarity switch on the front of the
EX350i to coincide with wire feeder polarity used.
The wire feeder will now display the welding volt-
age.
5. If K480 is not available, see connection diagram
S19404 for modification of K291 or K404 LN-7 input
cable with K867 universal adapter plug.
EX350i
LIN
CO
EL
EC
LN
TR
IC
IN
WAR
V E
NING
R T
REM
E C
OTE
V 3
5 0
-P
R O
POW
ER
ON
OFF
I
I
NPUT
NPUT
I
NPUT
A-2
BLACK
GREEN
RED
WHITE
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