Lincoln Electric SP-250 Design Features, Advantages, Unit Features, Wire Feeder Features

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

B-3		OPERATION		B-3
DESIGN FEATURES AND			Automatic Burnback - Provides proper burnback of
ADVANTAGES			the electrode to prevent it from sticking in the weld pud-
			dle at the end of a weld.
			Output Terminals - Easily accessible in wire drive
UNIT FEATURES:			section for quick cable connection and polarity rever-
			sal.
Undercarriage for Hand Mobility - Heavy duty 10"			Work Cable - 10 ft. (3.0m) long with work clamp.
(254mm) wheels and 4" (102mm) casters are factory
installed along with the handle. Handle can be used for
hanging the welding gun and work cable.			WIRE FEEDER FEATURES:
Gas Cylinder Platform - Factory installed on under-			Drop-in Wire Loading - Wire spindle snaps into
carriage. It permits platform mounting and support of a			Readi-Reel-Adapter, included with SP-250, or most
single gas cylinder.	No full lifting of gas	cylinder	any 2" (51mm) I.D. wire spool. The wire spindle drops
required during loading.			into the top loading SP-250 case design.
Adjustable Flow Regulator - Accommodates CO2 or			Accommodating standard 12” (305mm) and 8”
			(203mm) diameter coils, the unique spindle and sup-
argon blend gas. Includes a cylinder pressure gauge			port design automatically provides appropriate de-reel-
and a dual seal flow gauge.			ing drag to prevent wire reel overrun and loop-offs
			without manual brake adjustments.
Easy Accessability - Wire feeder enclosure protects			Tachometer Controlled Wire Drive - Precision con-
wire and wire drive from dirt, dust, and damage. Allows
easy top-access for "drop-in" wire reel loading and to			trol of permanent magnet motor provides proper wire
load or service the wire drive.			feed acceleration and speed accuracy, independent of
			fluctuations in line voltage and wire loading. This
			means reliable arc starting and weld consistency.
POWER SOURCE FEATURES:			Low Speed Start - When the trigger is pulled, the wire
10 Ft. (3.0m) Input Power Cable - Includes plug and			feeder feeds wire at low speed regardless of the set
mating receptacle for 208/230V unit. Convenient rear			wire feed speed until welding current is drawn or 2 sec-
panel reconnect allows easy access for 208V re-con-			onds has expired. This feature enhances starting and
nection.			makes setting stick out a snap. The 2 second limit per-
			mits high speed loading of the gun and cable. In later
Power Switch - Front panel toggle switch turns input			versions of the SP-250, a user selectable feature
power on and off.			allows the wire feeder to feed wire directly at the set
			speed, thus bypassing the 2 second slow start.
Thermostatically Controlled Fans - Provides cooling			Solid State Wire Feed Overload Protection - No cir-
of transformer and other components only when
required. When used intermittently or at low current			cuit breaker to reset. Simply pull the trigger to resume
procedures, the fan motors stay off, reducing the			welding once the overload condition has been cleared.
amount of dust and dirt drawn into the machine. Also			Unique Drive Roll and Guide Tube Design - Long
reduces power consumption.
			life, precisely aligned guide tubes and drive rolls.
Electronic Overload Protection - Protects machine			Quickly reloads by simply starting wire into ingoing
from short circuit or high current overloading.			guide tube. Adjustable tension setting minimizes
			'birdnesting', eliminates milling through the wire, and
Power Source Line Voltage Regulation - Precise			gives positive feeding. The double groove, reversible
SCR phase control circuit holds the voltage setting			drive roll included with the SP-250 allows use of .030
constant to maintain weld quality even when the input			(0.8mm) through .045 (1.2mm) diameter wire. Drive
voltage fluctuates +/-10%.			Roll kits for other sizes and types of wire are also avail-
			able.
Solid State Contactor - Output is turned on and off by			Fast-Mate Gun Connector - European style gun con-
SCR's instead of a	mechanical contactor	providing

extra long life in highly repetitive welding applications. nector provides electrode, shielding gas and gun con-

IDEALARC SP-250