Lincoln Electric SP-255 manual OPERATIONB-11, To Start the Welder, Feeding Electrode

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OPERATIONB-11

WARNING

Check to be sure the retaining spring has fully returned to the locking position and has securely locked the Readi-Reel cage in place. Retaining spring must rest on the cage not the welding elec- trode.

To remove Readi-Reel from Adapter, depress retain- ing spring tab with thumb while pulling the Readi-Reel cage from the molded adapter with both hands. It is not necessary to remove adapter from spindle.

MOUNTING OF 10 TO 44 LBS. SPOOLS

To mount 10 to 44 lb. spools (8" and 12" diame- ter): (For 8" spools a K468 adapter must be used.)

1.Remove the locking collar and the Readi-Reel adapter (if installed) from the 2" dia. spindle.

2.If using an 8" spool, place the K468 adapter on the spindle first. The hole in the adapter arm is to engage the pin on the spindle.

3.Place the spool on the spindle making certain the brake driving pin enters one of the holes in the back side of the spool. Be certain the wire comes off the reel in a clockwise direction when dereeled from the top of the coil.

4.Replace and tighten the locking collar for several seconds.

TO START THE WELDER

Turn the “Power” switch to “ON” This lights the red LED back lighting of the LCD display and a readable screen should be visible on the display. With the desired weld mode selected, operate the gun trigger for welder output and to energize the wire feed motor.

FEEDING ELECTRODE

WARNING

When inching, the electrode and drive mechanism are always “hot” to work and ground and remain “hot” several seconds after the gun trigger is released.

NOTE: Check that drive rolls and gun parts are proper

for the wire size and type being used. (Refer to Accessories section.)

1.Turn the Readi-Reel or spool until the free end of the electrode is accessible.

2.While securely holding the electrode, cut off the bent end and straighten the first six inches (152 mm). Cut off the first inch (25 mm). (If the electrode is not properly straightened, it may not feed or may not go into the outgoing guide tube causing a “birdnest”)

3.Push the wire through the guide tubes and close the idle roll assembly. For idle roll pressure set- tings, see Idle Roll Pressure Setting Section below.

4.Turn “OFF” weld timers by pressing TIMERS OFF key. Press the gun trigger and push the electrode into the drive roll. If the electrode fails to thread itself into the outgoing guide tube of the wire drive, open the quick release idle roll arm, thread the electrode manually, and reclose the arm.

5.Inch the electrode through the gun.

NOTE: If using the low speed starting feature of the SP-255, the wire will feed at low speed for 2 seconds while inching, then come up to the set speed.

6.Check that the welding process is set for the wire type, diameter, and gas per instructions on name- plate.

IDLE ROLL PRESSURE SETTING

The idle roll pressure thumbscrew is set at the factory backed out 2-1/2 turns from full pressure. This is an approximate setting. The optimum idle roll pressure varies with type of wire, wire diameter, surface condi- tion, lubrication, and hardness. As a general rule, hard wires may require greater pressure, and soft, or alu- minum wire, may require less pressure than the facto- ry setting. The optimum idle roll setting can be deter- mined as follows:

1.Press end of gun against a solid object that is elec- trically isolated from the welder output and press the gun trigger for several seconds.

2.If the wire “birdnests,” jams or breaks at the drive roll, the idle roll pressure is too great. Back the thumbscrew out 1/2 turn, run new wire through gun, and repeat above steps.

IDEALARC SP-255

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Contents Idealarc SP-255 Safety Depends on YouCalifornia Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéThank You Master Table of Contents for ALL Sections Appendix Section DSection E Section FTechnical Specifications Idealarc SP-255 INSTALLATIONA-1Uncrating the SP-255 2INSTALLATIONSafety Precautions Input Power and Grounding ConnectionsOutput Polarity Connection INSTALLATIONA-3GUN and Cable Installation Shielding GAS 4INSTALLATIONFumes and Gases can be dangerous OPERATIONB-1Limitations 2OPERATIONRecommended Processes and Equipment Welding CapabilityOPERATIONB-3 Start Mode SelectionsProcess WIRE/GAS KEY Typical Auto KEY Press Sequences Procedure Keys4OPERATION Auto KEYMemory Keys OPERATIONB-5Spot KEY Timer Keys6OPERATION Typical Memory Number KEY Press SequenceOPERATIONB-7 GUN Switch KeysTypical Toggle KEY Press Sequence 8OPERATIONTypical Activate KEY Press Sequence Using 4-STEP Trigger Interlock FunctionOPERATIONB-9 Step Trigger Interlock KeysWire Reel Loading GUN SwitchesWire Drive Roll Procedure for Changing Drive RollFeeding Electrode Idle Roll Pressure SettingOPERATIONB-11 To Start the Welder12OPERATION Making AN Auto Mode WeldOPERATIONB-13 Welding Thermal Overload Protection Wire Feed Overload ProtectionExplanation of Prompting and Error Messages 14OPERATIONOPERATIONB-15 Operation ACCESSORIESC-1 2ACCESSORIES Disabling Spool GUN ACCESSORIESC-3Idealarc SP-255 Routine Maintenance MAINTENANCED-1Safety Precautions Cable CleaningLiner Removal Replacement 2MAINTENANCEMagnum 250SP GUN Parts and Accessories MAINTENANCED-3GUN Handle Disassembly Idealarc SP-255 HOW to USE Troubleshooting Guide TROUBLESHOOTINGE-1Authorized Field Service Facility 2TROUBLESHOOTINGTroubleshooting Guide Problems Possible Areas Symptoms MisadjustmentsTROUBLESHOOTINGE-3 Contact your local Lincoln 4TROUBLESHOOTINGAuthorized Field Service Facility Function Problems TROUBLESHOOTINGE-5Contact your local Lincoln Authorized Field Service Facility 6TROUBLESHOOTINGSP-255 Wiring Diagram L9688 Dual Voltage Wiring DiagramsWiring Diagrams Dimension Print Page Page Page Page $700.00 How To Read Shop DrawingsPrecaucion Warnung Limited Warranty
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