Tweco 150XL CE PAK Master Without Latch Circuit - Manual (Page 32)

OPERATION 4-6 Manual 0-2727
Description of Cut Characteristics
Excellent - Minimum bevel (0 - 4°), minimum kerf (2 x
tip orifice diameter), little or no dross, smooth
cut surface.
Good - Slight bevel (0 - 10°), slightly wider kerf (2-1/2 x
tip orifice diameter), some dross (easily re-
moved), medium-smooth cut surface, slight top
edge rounding.
Fair - Excessive bevel (over 10°), wide kerf (over 2-1/2 x
tip orifice diameter), medium to heavy dross,
rough cut surface, top edge rounding.
NOTES
Cut quality depends heavily on set-up and param-
eters such as torch standoff, alignment with the
workpiece, cutting speed, gas pressures, and op-
erator ability.
Cut Quality on Various Materials
Types of Material
Type of Gases Material Thickness Carbon Steel Stainless Aluminum
Air Plasma and Gage (0.5 mm) Excellent Good-Excellent Good-Excellent
Air Secondary Gage to 1 inch (0.5 mm - 25.4 mm) Excellent Good Good
1 to 1-1/2 inch (25.4 mm - 38.1 mm) Excellent Good Good
Nitrogen Plasma Gage (0.5 mm) NR Good-Excellent Good-Excellent
and Air or CO2 Gage to 1/2 inch (0.5 mm - 12.7 mm) NR Good-Excellent Good-Excellent
Secondary 1/2 to 1-1/2 inch (12.7 mm - 38.1
)
NR Good-Excellent Good-Excellent
Ar/H2 Plasma and Gage to 1/4 inch (0.5 mm - 6.4 mm) NR NR NR
N2 or CO2 1/4 to 1-1/4 inch (6.4 mm - 31.8 mm) NR Good Excellent
Secondary 1/2 to 1-1/2 inch (12.7 mm - 38.1
)
NR Good Excellent
4.06 System Operation
NOTE
Frequently review the safety precautions at the front
of this manual.
This section contains operating information which is spe-
cific to the power supply. Detailed operating informa-
tion for torches can be found in the appropriate Torch
Instruction Manual.
WARNINGS
Disconnect primary power at the source before as-
sembling or disassembling power supply, torch
parts, or torch and leads assemblies, or adding cool-
ant.
It is not enough to simply move the ON/OFF
switch on the unit to OFF position when cutting
operations have been completed. Always open the
power supply disconnect switch five minutes after
the last cut is made.
A. Operational Suggestions
The suggestions below should be followed in all cutting
and gouging operations:
1. Wait five minutes before setting the ON/OFF switch
to OFF after operation. This allows the cooling fan to
run to dissipate operating heat from the power sup-
ply.
2. For maximum parts life, do not operate the pilot arc
any longer than necessary.
3. Use care in handling torch leads and protect them from
damage.