Cutting Procedure Recommendations | Lincoln Electric SVM104-A

B-5

OPERATION

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8.Pull the torch trigger to cut. - OUTPUT ON LED glows.

If postflow has not timed out, the pilot arc lights immediately.

If postflow air has timed out (after 20 sec- onds), air preflows for two seconds before pilot arc lights.

If the arc is not transferred by bringing plasma in contact with the work with in 2.5 seconds, the pilot arc shuts off.

9.Make a cut.

10.Stop cutting by releasing the torch trigger.

-Arc stops.

-Postflow air continues for 20 seconds.

-To continue cutting, repeat Step 8.

11.Turn ON/ OFF POWER SWITCH to OFF when job is done.

If the SAFETY LED glows at any time during oper- ation, check the following:

-Torch consumables are assembled properly. Machine will not start if they are not properly in place.

-Nozzle condition. The nozzle must be clean.

After the problem is corrected or no problem is found, press the SAFETY RESET button. If SAFETY LED goes out, machine is ready for use. If SAFETY LED continues to glow, refer to the TROUBLESHOOTING GUIDE in the TROU- BLESHOOTING AND REPAIR SECTION of this manual for a recommended course of action.

CUTTING PROCEDURE

RECOMMENDATIONS

For best results, use proper cutting or gouging procedures. Plasma arc cutting is a very eco- nomical process when used properly. Improper procedures or equipment use will result in poor quality work and high operating costs. The follow- ing procedures will help you get maximum perfor- mance from your PRO-CUT 60.

Use Pilot Arc Properly

The pilot arc transfers the arc to the work piece for cutting. Do not start the pilot arc repeatedly over short periods of time. This could reduce consum- able life. Start the pilot arc and then make and fin- ish the cut before releasing the trigger.

If the pilot arc sputters or does not start each time the torch trigger is pulled, check the consumable for wear or high air pressure. If either is found, take proper action.

Cutting and Gouging Recommendations

General

1.Make a continuous cut. Do not pause during cutting, gouging, or at the end of the work piece. Stopping and starting causes poor cuts and results in poor

machine operation. In addition, it reduces consumable life.

2.Position the torch so that dross and hot air cannot be deflected into the torch.

3.Do not drag the nozzle when cutting above the mid-range setting. Above mid range, always hold the torch 1/8" away from the work piece.

4.Proper drag cup/shield cup use gives you maximum nozzle and consumable life.

-When operating in the blue or red current ranges, use a drag cup when possible.

-When operating in the yellow range, use a drag cup or a shield cup.

5.Use the proper machine setting for the work to be done. Adjusting the machine to maximum output does not produce the best cutting in most situations.

PRO-CUT 60