Installation, Warning, Caution – Lincoln Electric INVERTEC V350-PRO User Manual
Page 10: A-3 select suitable location, Safety precautions, Connections of wire feeders to v350-pro

A-3
INSTALLATION
A-3
SELECT SUITABLE LOCATION
The Invertec V350-PRO will operate in harsh environments.
Even so, it is important that simple preventative measures
are followed in order to assure long life and reliable opera-
tion.
• The machine must be located where there is free circula-
tion 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 nui-
sance shutdown.
• Keep machine dry. Shelter from rain and snow. Do not
place on wet ground or in puddles.
• DO NOT MOUNT OVER COMBUSTIBLE SURFACES.
Where there is a combustible surface directly under
stationary or fixed electrical equipment, that surface
shall be covered with a steel plate at least .06”(1.6mm)
thick, which shall extend not less than 5.90”(150mm)
beyond the equipment on all sides.
-------------------------------------------------------------------------------
STACKING
V350-PRO 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 Invertec
V350-PRO. Installation should be made in accordance
with the appropriate 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.
SAFETY PRECAUTIONS
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/yellow lead of the power
cord to ground per U.S.National Electrical
Code.
----------------------------------------------------------------------
WARNING
• 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 10 ft. power cord is provided and wired into the
machine. Follow the power cord connection instruc-
tions.
• Incorrect connection may result in equipment
damage.
-----------------------------------------------------------------------
Single Phase Input
Connect green lead to ground per National Electrical
Code.
Connect black and white or brown leads to power.
Wrap red lead with tape to provide 600V insulation.
Three Phase Input
Connect green lead to ground per National Electric
Code.
Connect black, red and white or brown leads to
power.
CONNECTIONS OF WIRE FEEDERS TO V350-PRO
LN-7 Connection Instructions
An LN-7 can only be used with the “Factory” &
“
Advanced Process” versions of the 350-Pro.
• Turn the Invertec power switch "off".
• Connect the K480 control cable from the LN-7 to the
14-pin MS-style connector.
• Connect the electrode cable to the output terminal of
the polarity required by electrode. Connect the work
lead to the other terminal.
• Set the meter polarity switch on the front of the Invertec
to coincide with wire feeder polarity used. The wire
feeder will now display the welding voltage.
• If K480 is not available, see connection diagram
S19404 for modification of K291 or K404 LN-7 input
cable with K867 Universal Adapter Plug.
• If a remote control such as K857 is to be used with the
LN-7, the remote can be connected directly to the 6-pin
MS-style connector on the front of the Invertec or use a
K864 adapter to connect the LN-7 and the remote to
the 14-pin MS-style connector. (See connection dia-
gram S19901)
W
ARNING
REM
OT
E
POWER
OF
F
ON
A
A
MP
S
A
V
VO
LTS
WELD
TERMI
NAL
S
SELEC
T
OUTPUT
LINCOLN
ELECTRIC
INVERTEC V350-PRO
W
ARNING
W
ARNING
AV
ISO DE
PRECAUCION
ATTENTION
!
!
!
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GREEN
RED
BLACK
WHITE or BROWN
INVERTEC® V350-PRO
CAUTION
CAUTION