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POWER MIG 255
INSTALLATION
A-3 A-3
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INPUT POWER, GROUNDING AND
CONNECTION DIAGRAMS
------------------------------------------------------------------------
1. Before starting the installation, check with the
local power company if there is any question
about whether your power supply is adequate for
the voltage, amperes, phase, and frequency spec-
ified on the welder nameplate. Also be sure the
planned installation will meet the U.S. National
Electrical Code and local code requirements. This
welder may be operated from a single phase line
or from one phase of a two or three phase line.
2. Models that have multiple input voltages specified
on the nameplate (e.g. 208/230) are shipped con-
nected for the highest voltage. If the welder is to
be operated on lower voltage, it must be recon-
nected according to the instructions in Figure A.1
for dual voltage machines and Figure A.2 for
triple voltage machines.
Make certain that the input power is electrically
disconnected before removing the screw on the
reconnect panel access cover.
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Read entire installation section before starting
installation.
SAFETY PRECAUTIONS
ELECTRIC SHOCK can kill.
• Only qualified personnel should perform this
installation.
• Only personnel that have read and under-
stood the POWER MIG 255 Operating
Manual should install and operate this equip-
ment.
• Machine must be grounded per any national,
local or other applicable electrical codes.
• The POWER MIG power switch is to be in the
OFF position when installing work cable and
gun and when connecting other equipment.
WARNING
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UNCRATING THE POWER MIG 255
Cut banding and lift off cardboard carton. Cut banding
holding the machine to the skid. Remove foam and cor-
rugated packing material. Untape accessories from
Gas Bottle Platform. Unscrew the two wood screws (at
the Gas Bottle Platform) holding the machine to the
skid. Roll the machine off the skid assembly.
LOCATION
Locate the welder in a dry location where there is free
circulation of clean air into the louvers in the back and
out the front. A location that minimizes the amount of
smoke and dirt drawn into the rear louvers reduces the
chance of dirt accumulation that can block air pas-
sages and cause overheating.
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts such as
output terminals or internal wiring.
• All input power must be electrically discon-
nected before proceeding.
WARNING
WARNING