10 Ft. (3.0m) Input Power Cable - Includes plug and
mating receptacle for 208/230V unit. Convenient rear
reconnect panel allows easy access for 208V re-con-
nection.

Power Switch - Front panel toggle switch turns input
power on and off.

Pilot Light - Indicates when power is applied to
machine.

Thermostatically-Controlled Fans - Cools trans-
former and other components only when required. The
fan motors stays off when used intermittently or at low
current procedures, reducing the amount of dust and
dirt drawn into the machine. This also reduces power
consumption.

Electronic Overload Protection - Protects machine
from short circuit or high current overloading.

Power Source Line Voltage Regulation - Precise
SCR phase control circuit holds the voltage setting at a
constant level to maintain weld quality even when the
input voltage fluctuates +/- 10%.

Solid State Contactor -Output is turned on and off by
SCR's instead of a mechanical contactor providing
extra long life in highly repetitive welding applications.

Output Terminals - Easily accessible in wire drive
compartment for quick cable connection and polarity
reversal.

Work Cable - 10 ft. (3.0m) long with work clamp.

B-2

OPERATION

B-2

RECOMMENDED PROCESSES AND
EQUIPMENT

The WIRE-MATIC 255 is recommended for GMA weld-
ing processes using 10 to 44 lb. (4.5 to 20 kg) 2"
(51mm) I.D. spools or Readi-Reel coils (with optional
adapter) of:

.025" through .045" (0.6-1.2mm) solid steel.
.035" (0.9mm) stainless steel.
3/64" (1.2mm) aluminum.
.045" (1.2mm) Outershield.
.035" (0.9mm) and .045" (1.2mm) Innershield self-
shielding electrodes.

The WIRE-MATIC 255 is factory equipped to feed
.035" (0.9mm) and .045" (1.2mm) electrodes. It
includes a 12 ft. (3.6m) GMAW gun and cable assem-
bly equipped for these wire sizes with a duty cycle rat-
ing of 200A, 60% or 250A, 35%. Using GMAW
processes requires use of the optional gas regulator
and a supply of shielding gas.

DESIGN FEATURES AND
ADVANTAGES

UNIT FEATURES:

Continuous Voltage and Wire Speed Control -
Large, easy to use control knobs provide continuous
full-range calibrated control of both wire speed and
voltage. A "ready-reference Procedure Chart” is pro-
vided on the inside of the wire drive section door giving
suggested settings for popular welding processes and
plate thickness. Wire speed control has fine resolution
calibrated dial for repeatable and precise setting.

Undercarriage for Hand Mobility - Heavy duty 10"
(254mm) wheels and 4" (102mm) casters are factory
installed. The handle can be used for storing the weld-
ing gun and work cable.

Adjustable Flow Regulator - Accomodates CO

argon blend gas. Includes a cylinder pressure gauge
and a dual seal flow gauge.

Gas cylinder Platform - Factory installed on the
undercarriage, it permits platform mounting and sup-
port of a single gas cylinder. It is not necessary to
completely lift the gas cylinder when placing it on the
platform.

Easy Accessibility - The door on the wire feeder
enclosure protects wire and wire drive from dirt, dust,
and damage.

WIRE-MATIC 255

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