Tweco 6000GST Cutting Systems - Manual (Page 23)

Manual 0-2690 4-1 OPERATION
SECTION 4:
OPERATION
4.01 Introduction
This Section provides a description of the Liquid Cooled
Model Maximizer 300 Torch Assembly followed by oper-
ating procedures.
4.02 Functional Overview
The Liquid Cooled Model Maximizer 300 Torch is de-
signed to operate with the Merlin 6000GST Power Sup-
ply to provide a plasma cutting system which can cut
most metals from gauge thickness up to 3 inches (76.2
mm). With a quick change of torch parts the torch can be
used for plasma arc gouging.
4.03 Getting Started
This procedure should be followed at the beginning of
each shift:
WARNING
Disconnect primary power at the source before as-
sembling or disassembling stacked modules, indi-
vidual modules, torch parts, or torch and leads as-
semblies.
A. Torch Parts
Check the torch for proper assembly. Install proper
torch parts for the desired application (refer to Sec-
tion 4.04, Torch Parts Selection).
B. Input Power
1. Check the power source for proper input voltage.
2. Make sure that the Power Supply in the system is
set for the proper voltage (refer to appropriate
Power Supply Operating Manual for connections
or adjustments).
3. Close main disconnect switch or plug unit in to
supply primary power to the system.
C. Work Cable
Check for a solid work cable connection to the work-
piece.
D. Gas Supplies
Select desired gas supplies. Make sure gas sources
meet requirements (refer to Section 2.03, Specifica-
tions & Design Features). Check connections and turn
gas supplies on.
E. Purge System
On the Power Supply place the ON/OFF switch to
the ON position. An automatic gas purge (pre-flow)
will remove any condensation that may have accu-
mulated in the torch and leads while the system was
shut down. The torch cannot be activated during the
purge cycle (pre-flow). After the purge is complete,
if the MODE switch on the Gas Control Module is in
PILOT SET, PLASMA SET or SEC SET position, gas
will continue to flow. If the switch is the in RUN
position there will be no gas flow.
F. Current Output Level
At the Power Supply or Remote Control set the de-
sired current output level for the desired operation.
NOTE
DO NOT exceed the amperage rating of the Torch
Parts (consumables).
G. Pressure and Flow Settings
The pressure and flow setting are made at the Gas
Control Module front panel.
NOTES
Refer to Gas Control Module Instruction Manual
0-2641 for instructions on setting gas flows.
Refer to Appendix 2, Cutting Speed Charts, for
recommended gas pressures and flows for the ma-
terial being cut.
H. Ready for Operation
Return MODE switch on the Gas Control Module to
RUN position.
The system is now ready for operation.
NOTE
Refer to Appendix 1 for a detailed block diagram of
the Sequence Of Operation.