Lincoln Electric IM348 AC-225-GLM - Manual (Page 7)

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OPERATING INSTRUCTIONS
Input Power and Grounding Connections
Before starting the installation, check with the power com-
pany to be sure your power supply is adequate for the volt-
age, amperes, phase and frequency specified on the welder
nameplate. Also, be sure the planned installation will meet
the National Electrical Code and all local code require-
ments. This welder may be operated from a single phase
line or from one phase of a two or three phase line.
The unit is shipped with a five foot length input cable only.
No plug or receptacle is supplied from the factory.
Place the welder so there is free circulation of air in through
the louvers in the back and sides of the case and out of the
bottom on all four sides.
Using the following instructions, have a qualified electri-
cian connect the unit to a fuse box or disconnect switch. For
60 Hz. operation use 50 Amp Superlag Fuses. For 50 Hz.
operation use 60 Amp Superlag Fuses. Fuse the two hot
lines of the circuit. A green wire in the input cable connects
to the frame of the welder and to a ground in the fuse box.
This insures proper grounding of the welder frame. If a sep-
arate disconnect switch is used, it should have two poles for
the two hot lines and both should be fused as specified
above.
The dual voltage 50/60 Hz. AC-225-GLM is shipped from
the factory connected for the higher (230/220) nameplated
voltage. For use on the lower (115/110) voltage, remove the
welder top and side cover and reconnect and insulate the
leads at the power switch according to the wiring diagram
pasted inside the cover. Finally, replace the cover.
When connected to 115 volt 60 Hz. or 110 volt 50 Hz. input
power, the rated welding output is 140 amps.
Attaching Electrode Cable to Holder
1. Loosen locking screw and slide handle off holder. Place
handle over electrode cable.
2. Remove insulation from electrode cable 1” ± 1/16” from
end.
3. Back out cable connecting screw until end is flush with
inside surface of jaw body.
4. Remove cable connecting clamp from holder jaws. Place
clamp over bare end of electrode cable and insert into
holder with clamp centered against connecting screw.
5. Tighten cable connecting screw securely against clamp.
6. Slide handle into position and secure with locking screw.
When installing, turn the locking screw in until it is tight.
The threaded end of the screw will then press against the
inside of the handle and the head of the screw will be
completely inside the handle.
These installation instructions apply to the input wiring
and overload protection installed to supply one AC-225-
GLM and comply with the United States National
Electrical Code as it applies to electric welders. Other
equipment should not be connected to this supply with-
out consulting the input power requirements for that
equipment, the United States National Electrical Code,
and all local codes.
WARNING
Only qualified personnel should make the input power
connections. Turn the input power off at the disconnect
switch before attempting to connect the input power
lines to the welder.
WARNING
Before attaching the electrode cable to the electrode
holder or the work cable to clamp, be certain the welder
is turned off or the input power is disconnected.
WARNING
This rated current of 140 amps will reduce the capability of
using larger electrodes and special techniques such as
punching holes due to the lower output current. Only elec-
trodes and techniques up to the 140 amps rating can be used
with this reduced voltage input.
For supply lines, use three #10 or larger copper wires when
using conduit. If supply line run requirements exceed 100’,
#8 or larger wire will be needed to prevent excessive volt-
age drops.