Hypertherm Duramax Hyamp Long Handheld Torches - Manual (Page 35)

Duramax Hyamp Long Handheld Torches Service Manual 808290 35
3 – Operation
Common hand-cutting faults
The torch does not cut completely through the workpiece. The causes can be:
 The cut speed is too fast.
 The consumables are worn.
 The metal being cut is too thick for the selected amperage.
 Gouging consumables are installed instead of drag-cutting consumables.
 The ground clamp is not attached properly to the workpiece.
 The gas pressure or gas flow rate is too low.
 Gouging mode is selected on the power supply.
Cut quality is poor. The causes can be:
 The metal being cut is too thick for the amperage.
 The wrong consumables are being used (gouging consumables are installed instead of drag-cutting consumables,
for example).
 The torch is moving too quickly or too slowly.
The arc sputters and consumable life is shorter than expected. The causes can be:
 Moisture in the gas supply.
 Incorrect gas pressure.
 Consumables incorrectly installed.
 The consumables are worn.
The consumables show unexpected damage or wear after piercing thicker metal (16 mm [5/8 inch] or thicker). The
causes can be:
 Blowback from starting the arc while the shield is resting flat against the workpiece.
 To avoid this, hold the torch at an angle to the workpiece, or slightly above or to the side of the workpiece, before
starting the arc. Then drag lightly along the workpiece to continue the cut.