Tweco 15XC CE Merlin PAK - Manual (Page 43)

Manual 0-2529 3 - 9 OPERATION
• Air secondary is normally used when operating with air
plasma and occasionally with nitrogen plasma.
• Inexpensive - reduces operating costs.
• Improves cut quality on some ferrous materials.
AIR SECONDARY
• CO 2 secondary is used with nitrogen or Ar/H 2 plasma.
• Provides good cut quality on ferrous or non-ferrous
materials.
• May reduce smoke when used with Ar/H 2 plasma.
CO 2 SECONDARY
• Nitrogen secondary is used with Ar/H 2 plasma.
• Provides smooth finishes on non-ferrous materials.
• May be used with nitrogen plasma in order to operate
from one compressed gas cylinder.
• May reduce smoke when used with Ar/H 2 plasma.
NITROGEN SECONDARY
• Water secondary should be used only in mechanized
applications - never in hand cutting!
• Normally used with nitrogen, Ar/H 2 , or air plasma.
• Provides very smooth cut surface.
• Reduces smoke and heat input to the workpiece.
• Effective up to 1 inch maximum material thickness.
• Tap water provides low operating expense.
WATER SECONDARY
Table 3-B Secondary Selection for Plasma Cutting