Thermal Dynamics PCH-100XL, Instruction Manual

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Manual 0-2583 17 OPERATION
SECTION 4:
OPERATION
4.01 Introduction
This Section provides a description of the PCH/M-100XL
Torch Assembly followed by operating procedures.
4.02 Functional Overview
The PCH/M-100XL Torch is designed to operate with the
Pak Master 100XL Cutting System to provide a plasma
cutting system which can cut most metals from gauge
thickness up to 1 inch (25.4 mm). Using standard torch
parts the torch can be used for plasma arc gouging upto
1/8 inch (3.18 mm) deep on a single pass.
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
Check the power source for proper input voltage.
Close main disconnect switch or plug unit in to sup-
ply primary power to the system.
C. Work Cable
Check for a solid work cable connection to the work-
piece.
D. Gas Supply
Select desired single gas supply. Make sure gas sources
meet requirements (refer to Secton 2.03-K, Gas Re-
quirements). Check connections and turn gas supply
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 switch is in SET position, gas will flow.
If the switch is 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 70 amperes. For drag cutting
set the control at 35 amps or less only.
G. Pressure Settings
Place the RUN/SET switch to the SET position. Ad-
just gas pressure control for 70 psi ±3 (4.8 bar ±2).
H. Ready for Operation
Return the RUN/SET switch to RUN position.
The system is now ready for operation.
NOTE
Refer to Appendix II for a typical detailed block diagram
of Sequence Of Operation.
4.04 Torch Parts Selection
Depending on the type of operation to be done determines
the torch parts to be used.
Torch parts:
Shield Cup, Cutting Tip, Electrode and Gas Dis-
tributor
Type of operation:
Drag cutting, standoff cutting or gouging
The following torch parts are installed from the factory:
• Shield Cup
• Cutting Tip
• Electrode
• Gas Distributor
Refer to Figure 4-1 for the various torch parts.