Tweco 300 Maximizer - Manual (Page 15)

Manual 0-2554 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 and Torch Leads Assemblies. Service of
this equipment is restricted to properly trained person-
nel; unqualified personnel 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 2 inches (50.8
mm), or 3/4 inches (19 mm) for production speed cut-
ting, at 150 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 a tool-free quick-connect
receptacle on the Arc Starter Box.
2.03 Specifications & Design
Features
A. Maximizer 300 Torch
The following applies to the Liquid Cooled Maximizer
300 Torch only:
1. Maximizer 300 Torch Configuration & Dimensions
Maximizer 300 Machine Torch is supplied with a
Metal Rack and Pinion Mounting Assembly. An op-
tional Phenolic Pinch Block Mounting Assembly is
available.
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 2-1 Maximizer 300 Machine Torch
2. Torch Leads Length
25 ft (7.6 m)
50 ft (15.2 m)
Extendable up to 100 ft (30.5 m) from the Power Sup-
ply
3. Torch Ratings
Ambient
Temperature
104° F
(40° C)
Duty Cycle
100% @ 150 Amps @ 0.5 gpm
(1.89 lpm) Coolant Flow Rate
Maximum Current 300 Amps
Voltage (V
peak
) 500V
Arc Striking Voltage 12 kV
Torch Ratings