Tweco 1000 Cutting Systems - Manual (Page 15)

Manual 0-2710 2-1 INTRODUCTION
SECTION 2:
INTRODUCTION
2.01 Scope of Manual
This manual contains descriptions, operating instructions
and maintenance procedures for the Liquid Cooled Maxi-
mizer 300 Torch Assemblies. Service of this equipment is
restricted to properly trained personnel; unqualified per-
sonnel are strictly cautioned against attempting repairs
or adjustments not covered in this manual, at the risk of
voiding the Warranty.
Read this manual thoroughly. A complete understand-
ing of the characteristics and capabilities of this equip-
ment will assure the dependable operation for which it
was designed.
2.02 General Description
NOTE
Refer to Section 2.05, Introduction To Plasma, for
a more detailed description on plasma theory.
The Liquid Cooled Maximizer 300 Torch is a liquid cooled
torch that provides cutting capacity of up to 1-1/2 inches
(38.1 mm), or 1/2 inch (12.7 mm) for production speed
cutting, at 100 amperes. In the torch, two torch leads pro-
vide plasma and secondary gas to the torch head. The
leads also provide the closed loop for the liquid coolant
flow from the Power Supply.
Plasma torches are similar in design to the common au-
tomotive spark plug. They consist of negative and posi-
tive sections which are separated by a center insulator.
Inside the torch, the pilot arc is initiated in the gap be-
tween the negatively charged electrode and the positively
charged tip. Once the pilot arc has ionized the plasma
gas, the superheated column of gas flows through the
small orifice in the torch tip, which is focused on the metal
to be cut. The torch connects to bulkhead fittings inside
the Power Supply.
2.03 Specifications & Design
Features
The following applies to the Liquid Cooled Maximizer
300 Torch only:
1. Maximizer 300 Torch Configurations and Dimen-
sions
Maximizer 300 Machine Torch is available with a 70°
and 90° Torch Head with Mounting Tube. The 180°
Torch Head is supplied with Metal Rack and Pinion
Mounting Assembly or with a non-conductive posi-
tioning tube / pinch block.
13.85 in
(35.18 cm)
2.0 in
(5.08 cm)
A-02268
1.53 in
(3.89 cm)
4.33 in
(11 cm)
2.0 in
(5.08 cm)
4.28 in
(10.87 cm)
1.53 in
(3.89 cm)
14.78 in
(37.54 cm)
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)
Figure 2-1 Torch Configurations and Dimensions
(Metal Rack & Pinion Shown)