Tweco Max 300 w-Merlin 3000 - Manual (Page 16)

INTRODUCTION & DESCRIPTION 10 Manual 0-2549
9. Plasma Gas Requirements
a. Plasma Gas
Compressed Air, Oxygen (O2), Nitrogen (N2),
or Argon/Hydrogen(ArH2)
b. Pressure
65 to 75 psi (4.5 to 5.2 bar)
CAUTION
Maximum input gas pressure must not exceed 125
psi (8.6 BAR)
c. Hot Flow
Cutting: 22 - 28 scfh (10.4 - 13.2 lpm)
Gouging: 22 - 43 scfh (10.4 - 20.3 lpm)
NOTE
Hot flow is measured with the main arc activated.
When pressure is set correctly the plasma gas flow
rate is significantly higher until the arc is initi-
ated.
10. Secondary Gas Requirements
a. Secondary Gas
Compressed Air, Carbon Dioxide (CO2), or Ni-
trogen (N2)
b. Pressure
65 to 75 psi (4.5 to 5.2 bar)
CAUTION
Maximum input gas pressure must not exceed 125
psi (8.6 BAR)
c. Flow
Cutting or Gouging: 220 scfh (103 lpm)
11. Secondary Water Requirements
a. Water Source
Tap Water
b. Water Pressure
Min. 50 psi (3.5 BAR)
c. Water Flow
Cutting: 6 gph (35.2 lph)
12. Weight (without leads)
1.0 lb (.45 kg)
13. Torch Dimensions
Min. 6.750 in (171.5 mm)
Max. 11.125 in (282.6 mm)
1.937 in
(49.2 mm)
1.38 in
(35 mm)
17.350 in
(441 mm)
1.875 in
(47.6 mm)
1.531 in
(38.9 mm)
0.718 in
(18.2 mm) A-01023
Figure 2-2 Torch Dimensions
B. Torch Leads Extension
The following applies to the Torch Leads Extension only:
The leads extension is part of the system to interface the
Power Supply to the Arc Starter Box. Accessories avail-
able to extend the Arc Starter Box from the Power Sup-
ply up to 100 ft (30.5 m).
2.04 Options And Accessories
These items can be used to customize a standard system
for a particular application or to further enhance perfor-
mance (refer to Section 6 for ordering information).
• Phenolic (plastic) Pinch Block Mounting Assembly
For machine mounted torch applications where a
non-metal mounting assembly is desired.
• Spare Parts Kits
Kits contain replacement front-end torch parts and
tools. Spare parts kits are available for air, oxygen
(O2), and multi-gas cutting.
2.05 Introduction to Plasma
A. Plasma Gas Flow
Plasma is defined as a gas which has been heated to
an extremely high temperature and ionized so that it
becomes electrically conductive. The plasma arc cut-
ting and gouging process use this plasma to transfer
an electrical arc to the workpiece. The metal to be cut
or removed is melted by the heat of the arc and then
blown away.