Thermal Dynamics CE CutMaster 80XL, Руководство по эксплуатации

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OPERATION 4-4 Manual 0-2724
4.04 Preparations for Operating
Follow this set-up procedure each time the system is op-
erated:
WARNING
Disconnect primary power at the source before dis-
assembling the power supply, torch, or torch leads.
A. Torch Parts Selection
Check the torch for proper assembly and appropriate front
end torch parts. The torch parts (shield cup, tip and elec-
trode) must correspond with the type of operation (cut-
ting or gouging). Refer to the Instruction Manual sup-
plied with the Torch Assembly for proper parts selection.
B. Check primary power source as follows:
1. Check the power source for proper input voltage.
Make sure the input power source meets the power
requirements for the unit per Section 2.03-A-4, Speci-
fications/Design Features.
2. Connect the input power cable (or close the main dis-
connect switch) to supply power to the system.
C. Gas Selection
Select desired gas (air or nitrogen). Make sure gas source
meets pressure and flow requirements (refer to Section
3.08, Gas Connections). Check connection and turn gas
supply on.
D. Work Cable Connection
Check for a solid and clean work cable connection to the
workpiece. The area must be free from paint and rust.
Make a solid work cable
connection to the work-
piece or cutting table
A-00925
Figure 4-6 Work Cable Connection To Workpiece
E. Torch Connection
Check that the torch is properly connected.
F. Purge the System (Gas Pre-Flow)
Move the ON/OFF switch to ON position. To start the
pre-flow move the RUN/SET switch to SET position for
a minimum of 20 seconds. The pre-flow gas purge will
remove any moisture that may have accumulated in the
torch and leads while the system was shut down. The
torch cannot be activated during pre-flow.
G. Select Output Current
Select the desired current output level for the operation.
• 15 to 60 amps for standoff cutting and gouging
• 15 to 35 amps for drag cutting
H. Set Operating Pressure
Move the RUN/SET switch to SET position. Adjust the
gas pressure to 60 psi (4.1 bar).
I. RUN/SET Switch
Set the RUN/SET switch to RUN position.
The system is now ready for operation.
4.05 Cut Quality
Cut quality requirements differ depending on applica-
tion. For instance, nitride build-up and bevel angle may
be major factors when the surface will be welded after
cutting. Dross-free cutting is important when finish cut
quality is desired to avoid a secondary cleaning opera-
tion.
The following cut quality characteristics are illustrated
in Figure 4-7 below:
Cut Surface
The condition (smooth or rough) of the face of the cut.
Bevel Angle
The angle between the surface of the cut edge and a plane
perpendicular to the surface of the plate. A perfectly per-
pendicular cut would result in a 0° bevel angle.
Top-Edge Rounding
Rounding on the top edge of a cut due to wearing from
the initial contact of the plasma arc on the workpiece.
Dross Build-up and Top Spatter
Dross is molten material which is not blown out of the
cut area and re-solidifies on the plate. Top spatter is dross
which accumulates on the top surface of the workpiece.
Excessive dross may require secondary clean-up opera-
tions after cutting.