Cutmaster 12mm – Tweco CutMaster 12mm User Manual

Page 19

CUTMASTER 12mm

Manual 0-5076

INTRODUCTION

2T-1

SECTION 2 TORCH:

INTRODUCTION

2T.01 Scope of Manual

This manual contains descriptions, operating instructions

and maintenance procedures for the 1Torch Models SL60/

Manual and SL100/Mechanized Plasma Cutting Torches.

Service of this equipment is restricted to properly trained

personnel; 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 understanding of

the characteristics and capabilities of this equipment will as-

sure the dependable operation for which it was designed.

2T.02 General Description

Plasma torches are similar in design to the automotive spark

plug. They consist of negative and positive sections sepa-

rated by a center insulator. Inside the torch, the pilot arc

starts in the gap between the negatively charged electrode

and the positively charged tip. Once the pilot arc has ion-

ized 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.

A single torch lead provides gas from a single source to be

used as both the plasma and secondary gas. The air flow

is divided inside the torch head. Single - gas operation pro-

vides a smaller sized torch and inexpensive operation.

NOTE

Refer to Section "2T.05

Introduction

to Plasma" on page 2T-2, for a more detailed

description of plasma torch operation.

Refer to the Appendix Pages for additional speci-

fications as related to the Power Supply used.

2T.03 Specifications

A. Torch Configurations

1. Hand/Manual Torch, Models

The hand torch head is at 75° to the torch

handle. The hand torches include a torch

handle and torch trigger assembly.

10.125" (257 mm)

3.75"

(95 mm)

1.17" (29 mm)

Art # A-03322_AB

2. Mechanized Torch, Model

The standard machine torch has a position-

ing tube with rack & pinch block assembly.

Art # A-02998

1.75" /

44.5 mm

1.375" / 35 mm

15.875" / 403 mm

0.625" /

16 mm

4.95" / 126 mm

1.175" / 30 mm

9.285" / 236 mm

B. Torch Leads Lengths

1. Hand Torches are available as follows:

• 20 ft / 6.1 m, with ATC connectors
• 50 ft / 15.2 m, with ATC connectors

2. Machine Torches are available as follows:

• 5 foot / 1.5 m, with ATC connectors

• 10 foot / 3.05 m, with ATC connectors

• 25 foot / 7.6 m, with ATC connectors

• 50 foot / 15.2 m, with ATC connectors

C. Torch Parts

Starter Cartridge, Electrode, Tip, Shield Cup

D. Parts - In - Place (PIP)

Torch Head has built - in switch

12 VDC circuit rating

E. Type Cooling

Combination of ambient air and gas stream through torch.

F. Torch Ratings

Manual Torch Ratings

Ambient

Temperature

104° F

40° C

Duty Cycle

100% @ 60 Amps @ 400

scfh

Maximum Current

60 Amps

Voltage (V

peak

)

500V

Arc Striking Voltage

7kV

Mechanized Torch Ratings