Tweco 300 Maximizer - Manual (Page 23)

Manual 0-2554 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 15XC Power Supply to
provide a plasma cutting system which can cut most met-
als from gauge thickness up to 2 inches. 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 RUN/SET/PURGE switch is in SET or PURGE
position, gas will flow. If the switch is the in RUN
position there will be no gas flow.
F. Current Output Level
At the Power Supply set the desired current output
level to a maximum of 150 amperes.
G. Pressure Settings
NOTE
Refer to Appendix 2, Cutting Speed Charts, for
recommended gas pressure for the material being
cut.
Place the RUN/SET/PURGE switch to the SET posi-
tion. Adjust PLASMA and SECONDARY GAS pres-
sure control to 65 psi (4.5 bar).
H. Ready for Operation
Return the RUN/SET/PURGE switch to RUN posi-
tion.
The system is now ready for operation.
NOTE
Refer to Appendix 1 for a detailed block diagram of
the Sequence Of Operation.