OPERATION 18 Manual 0-2450
4.03 OPERATING THE SYSTEM (continued)
Table 4-B Common Causes of Operating Problems
Common Cutting Problems
Problem Possible Cause
Insufficient
Penetration
1. Cutting speed too fast
2. Torch tilted too much
3. Metal too thick
4. Worn torch parts
5. Cutting current too low
Main Arc
Extinguishes
1. Cutting speed too slow
2. Torch standoff too high from workpiece
3. AC line too low - reduce output current
4. Work cable disconnected
5. Worn torch parts
Excessive
Dross Formation
1. Cutting speed too slow (bottom dross)
2. Cutting speed too fast (top dross)
3. Torch standoff too high from workpiece
4. Improper cutting current
5. Worn torch parts
Short Torch
Parts Life
1. Oil or moisture in air source
2. Exceeding system capability (material too thick)
3. Excessive pilot arc time
4. Air flow too low (incorrect pressure)
5. Improperly assembled torch
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