Hypertherm Powermax105 Service Manual - Manual (Page 137)

Mechanized cutting
powermax
105 Service Manual 7-11
Common machine-cutting faults
The torch’s pilot arc will initiate, but will not transfer. Causes can be:
• The work cable is not making good contact with the cutting table or the cutting table is not making good
contact with the workpiece.
• The torch-to-work distance is too large.
The workpiece is not totally penetrated, and there is excessive sparking on the top of the workpiece. Causes can be:
• The metal surface is not clean of rust or paint.
• The consumables are worn and need to be replaced. For optimized performance in a mechanized application,
replace the nozzle and the electrode together.
• The work cable is not making good contact with the cutting table or the cutting table is not making good
contact with the workpiece.
• The current (amperage) is set too low. See the Machine Torch Setup section.
• The cut speed is too high. See the cut charts in the Machine Torch Setup section.
• The metal being cut exceeds the maximum capacity for the selected amperage. See the Specifications section.
Dross forms on the bottom of the cut. Causes can be:
• The gas setting is incorrect.
• The consumables are worn and need to be replaced. For optimized performance in a mechanized application,
replace the nozzle and the electrode together.
• The cutting speed is not correct. See the cut charts in the Machine Torch Setup section.
• The current (amperage) is set too low. See the cut charts in the Machine Torch Setup section.
The cut angle is not square. Causes can be:
• The torch is not square to the work piece.
• The gas setting is incorrect.
• The consumables are worn and need to be replaced. For optimized performance in a mechanized application,
replace the nozzle and the electrode together.
• The direction of the torch travel is incorrect. The high-quality cut is always on the right with respect to the
forward motion of the torch.
• The distance between the torch and the workpiece is not correct.
• The cutting speed is not correct. See the cut charts in the Machine Torch Setup section.