Thermal Dynamics PAK Master 150XL, Service Manual

Page: 19 / 90

Manual 0-2728 3-3 DESCRIPTION
15. Weight
Power Supply with Torch: 275 lbs (125 kg)
Shipping Weight: 350 lbs (158.8 kg)
16. Used With Torch
• PCH-120 Hand Torch
• PCM-120 Machine Torch
B. Gas Regulator/Filter Assembly
Specifications
The following specifications apply to the Gas Regulator/
Filter Assembly only:
1. Gas Regulator Maximum Gauge Pressure
Plasma: 160 psi (11.3 bar)
Secondary: 160 psi (11.3 bar)
2. Maximum Input Gas Pressure
125 psi (8.6 bar)
3. Filter
Coalescent type filter
C. Gas Requirements
1. Plasma
Gases: Compressed Air, Nitrogen, Argon/Hydrogen
Operating Pressure: 65 psi (4.5 bar)
Cold Flow:
Cutting: 50 - 78 scfh (23.6 - 36.8 lpm)
Gouging: 85 - 95 scfh (40.1 - 44.8 lpm)
CAUTION
Maximum input gas pressure must not exceed 125
psi (8.6 bar).
2. Secondary
Gases: Compressed Air, Carbon Dioxide (C0
2
), Ni-
trogen
Operating Pressure: 60 psi (4.1 bar)
Cold Flow:
Cutting: 340 scfh (160.4 lpm)
Gouging: 235 scfh (110.9 lpm)
CAUTION
Maximum input gas pressure must not exceed 125
psi (8.6 bar).
3.04 Power Supply Options and
Accessories
The following accessories are available for the Power
Supply. Refer to Section 6, Parts Lists, for part numbers
and ordering information.
A. High Pressure Regulators
High pressure regulators are available for air, nitro-
gen, and argon-hydrogen. The regulators are used
to set the proper pressure for the type of gas being
used.
B. CNC Interface Cable
NOTE
Accessory is for use with Shielded PCM Torch &
Leads.
The CNC Interface Cable is available in two lengths:
25 ft (7.6 m) and 50 ft (15.2 m). The cable is used to
interface the Power Supply with an auxiliary control
device to provide OK-To-Move and ON/OFF signals.
C. Work Cable Kit
Power Supply is supplied with attached 20 ft (6.1 m)
work cable and clamp. Longer cables are available
as a user installed kit.
D. Remote Pendant Control
NOTE
Accessory is for use with Unshielded PCM Torch
& Leads.
Control used to manually start and stop cutting op-
erations from a location up to 20 ft. (6.1 m) from the
Plasma Power Supply.
3.05 Theory Of Operation
A. Plasma Arc Cutting and Gouging
Plasma is a gas which is heated to an extremely high tem-
perature and ionized so that it becomes electrically con-
ductive. The plasma arc cutting process uses this plasma
gas to transfer an electric arc to a workpiece. The metal
to be cut is melted by the intense heat of the arc and then
blown away by the flow of gas.
With a simple change of torch parts, the system can also
be used for plasma arc gouging. Plasma arc gouging uses
the same process to remove material to a controlled depth
and width.