Tweco 15XC Merlin - Manual (Page 59)

Manual 0-2251 4-25 OPERATION
4.10 COMMON OPERATING ERRORS
Listed below are common cutting problems followed by
probable causes of each. If the problems are caused by a
power supply problem, refer to Section 5.11, Troubleshoot-
ing Guide).
a. Cutting speed too high
b. Current too low
c. Metal too thick
d. Worn or damaged torch parts
a. Cutting speed too low
b. Standoff too high
a. Improper gas pressure
b. Improper cutting speed
(See Section 3.11, Cutting Speeds)
c. Worn or damaged torch parts.
a. Cutting current too high
b. Damaged or loose cutting tip
c. Tip in contact with work
d. Heavy spatter
e. Low plasma gas pressure
a. High coolant conductivity
Insufficient Penetration
Main Arc Extinguishes
Dross Formation
Burned-Out Tips
Poor Pilot Starting