Tweco XTTM-301 - Manual (Page 39)

Manual 0-4768 4-1 OPERATION
SECTION 4:
OPERATION
4.01 Introduction
This Section provides a description of the XT TM -301 Torch
followed by operating procedures.
4.02 Functional Overview
The Torch operates with the Merlin ® 1000 Power Supply
to provide a plasma cutting system which can cut most
metals from gauge thickness up to 1 inch (25.4 mm).
4.03 Getting Started
Follow this procedure at the start 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 6.05, 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 Power Supply
Operating Manual for connections or adjust-
ments).
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). See the Appendix for gas
selection guidance. 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 accumulated
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
RUN/SET switch is in SET position, gas will flow. If
the switch is the in RUN position there will be no gas
flow.
F. Current Output Level
Set the desired current output level on the Power Sup-
ply for the desired operation.
NOTE
DO NOT exceed the amperage rating of the Torch
Parts (consumables).
G. Pressure And Flow Settings
Make the pressure and flow settings at the Gas Con-
trol Panel on the Plasma Power Supply.
NOTES
Refer to appropriate Plasma Power Supply Operat-
ing Manual for instructions on setting gas flows.
Refer to Cutting Speed Charts in the Appendix for
recommended gas pressures and flows for the mate-
rial being cut.
H. Ready for Operation
Return the RUN/SET switch 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.