Installation; Operating Instructions; Input Power And Grounding Connections; Attaching Electrode Cable To Holder - Lincoln Electric AC-225-S Operator's Manual

AC-225-S & AC/DC 225/125
OPERATING
INSTRUCTIONS
• Have an electrician install and service this equipment.
• Turn the input power off at the fuse box before working on equipment.
• Do not touch electrically hot parts.

Input Power and Grounding Connections

Before starting the installation, check with the power company to be
sure your power supply is adequate for the voltage, amperes, phase
and frequency specified on the welder nameplate. Also, be sure the
planned installation will meet the United States 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.
All models designed to operate on less than 250 volt input lines are
shipped with the input cable connected to the welder.
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. Mount a NEMA Type 6-50R receptacle in a suitable
location. Be sure it can be reached by the plug on the input cable
attached to the welder.
Using the following instructions, have a qualified electrician connect
this receptacle (NEMA 6-50R Type) to the power lines at the fuse
box. Three #10 or larger copper wires are required if conduit is
used. For long cable runs over 100'(31m), #8 or larger wire in
conduit will be needed to prevent excessive voltage drops. Fuse the
two hot lines with 50 ampere super lag type fuses as shown in the
following diagram. The center contact in the receptacle is for the
grounding connection. A green wire in the input cable connects this
contact to the frame of the welder. This insures proper grounding of
the welder frame when the welder plug is inserted into the
receptacle. If a separate disconnect switch is used, it should have
two poles for the two hot lines and both should be fused for 50
amperes.
CONNECT TO A SYSTEM
GROUNDING WIRE. SEE THE UNIT-
ED STATES NATIONAL ELECTRI-
CAL CODE AND/OR LOCAL CODES
FOR OTHER DETAILS AND MEANS
FOR PROPER GROUNDING.
}
WARNING
CONNECT TO HOT WIRES
OF A THREE-WIRE, SINGLE
PHASE SYSTEM OR TO
ONE PHASE OF A TWO OR
THREE PHASE SYSTEM.

Attaching Electrode Cable to Holder

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.
Identify the holder type before installing.
Type A - Holder with Octagon shaped handle and Clamp in
Jaws
1. Loosen locking screw and slide handle off holder. Place han-
dle over electrode cable. The longer cable is used for the
Electrode Cable and is located in the front of machine upper
hole as shown in FIGURE 1A.
2. Remove insulation from electrode cable 1" ± 1/16" (25.4mm
± 1.6mm) 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.
A-1

INSTALLATION

WARNING
FIGURE 1A
Upper Hole
with Longer Cable
Electrode Cable