Tweco 150XL CE PAK Master - Manuel (Page 17)

Manual 0-2826 2-3 INTRODUCTION
B. Gas Regulator/Filter Assembly
Specifications
The following specifications apply to the Gas Regulator/
Filter Assembly only:
1. Gas Regulator Maximum Gauge Pressure
Plasma: 160 psi (11.3 bar)
Secondary: 160 psi (11.3 bar)
2. Maximum Input Gas Pressure
125 psi (8.6 bar)
3. Filter
Coalescent type filter
C. Gas Requirements
1. Plasma
Gases: Compressed Air, Nitrogen, Argon/Hydrogen
Operating Pressure: 65 psi (4.5 bar)
Cold Flow:
Cutting: 50 - 78 scfh (23.6 - 36.8 lpm)
Gouging: 85 - 95 scfh (40.1 - 44.8 lpm)
CAUTION
Maximum input gas pressure must not exceed 125
psi (8.6 bar).
2. Secondary
Gases: Compressed Air, Carbon Dioxide (C0
2
), Nitrogen
Operating Pressure: 60 psi (4.1 bar)
Cold Flow:
Cutting: 340 scfh (160.4 lpm)
Gouging: 235 scfh (110.9 lpm)
CAUTION
Maximum input gas pressure must not exceed 125
psi (8.6 bar).
D. Two Stage Air Line Filter
The Two Stage Air Line Filter will remove moisture
and contaminants from the air stream when using
compressed air. The filter is capable of filtering to at
least 5 microns.
2.04 Power Supply Options and
Accessories
NOTE
Refer to Section 6, Parts Lists, for part numbers
and ordering information.
The following are accessories that are available for the
Power Supply:
A. High Pressure Regulators
High pressure regulators are available for air, nitro-
gen, and argon-hydrogen. The regulators are used to
set the proper pressure for the type of gas being used.
B. Standoff Control (SC11)
Optional Standoff Control automatically finds height
and maintains torch standoff with a high speed torch
lifter motor. Refer to Standoff Control (SC11) Manual,
0-2556, for more information.
C. Remote Pendant Control
Control used to manually start and stop cutting opera-
tions from a location up to 20 ft. (6.1 m) from the Plasma
Power Supply.
2.05 Theory Of Operation
A. Plasma Arc Cutting and Gouging
Plasma is a gas which is heated to an extremely high tem-
perature and ionized so that it becomes electrically con-
ductive. The plasma arc cutting process uses this plasma
gas to transfer an electric arc to a workpiece. The metal
to be cut is melted by the intense heat of the arc and then
blown away by the flow of gas.
With a simple change of torch parts, the system can also
be used for plasma arc gouging. Plasma arc gouging uses
the same process to remove material to a controlled depth
and width.
B. Input and Output Power
The unit converts AC input power to DC power for the
main cutting arc. The negative output is connected to
the torch electrode through the negative torch lead, and
the positive output connects to the workpiece through
the work cable.