Recommended Processes and Equipment

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	OPERATION

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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 CO2 or 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.

POWER SOURCE FEATURES:

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.

OPERATION