Common Cutting Problems - ESAB Powercut 650 Instruction Manual

section 4

4.3 common cutting proBlems

Listed below are common cutting problems followed by the probable cause of each. If prob-
lems are determined to be caused by the Powercut 650, refer to the maintenance section of this
manual. If the problem is not corrected after referring to the maintenance section, contact your
ESAB representative.
a.
B.
c.
D.
e.
f.
g.
h.
insufficient penetration.
1. Cutting speed too fast.
2. Damaged cutting nozzle.
3. Improper air pressure.
main arc extinguishes.
1. Cutting speed too slow.
Dross formation. (In some materials and thicknesses, it may be impossible to get dross-free
cuts.)
1. Cutting speed too fast or too slow.
2. Improper air pressure.
3. Faulty nozzle or electrode.
Double arcing. (Damaged Nozzle Orifice.)
1. Low air pressure.
2. Damaged cutting nozzle.
3. Loose cutting nozzle.
4. Heavy spatter.
uneven arc.
1. Damaged cutting nozzle or worn electrode.
unstable cutting conditions.
1. Incorrect cutting speed.
2. Loose cable or hose connections.
3. Electrode and/or cutting nozzle in poor condition.
main arc Does not strike.
1. Loose connections.
poor consumable life.
1. Improper gas pressure.
2. Contaminated air supply.
19
operation