Tweco 12mm Cutmaster - Manual (Page 26)

CUTMASTER 10MM, 12MM
OPERATION 4-4 Manual 0-5197AD
4.03 Sequence of Operation
The following is a typical sequence of operation for this Power Source.
1. Place the ON/OFF switch on the Power Source to ON (up) position (Red indicator lamp is illuminated).
a. AC indicator turns ON; fan turns ON.
NOTE
During initial power up, there will be a delay of about 2 seconds before the AC Indicator light will illuminate
and the pre-flow gas and fan starts. The gas will automatically flow from torch for approximately 10 seconds
(only after the AC Indicator lamp is illuminated) (The AC Indicator lamp and fan turns ON approximately 2
seconds after the ON/OFF switch is enabled), this is a process that makes sure all inputs (gas, input power,
torch connection, and torch parts) are acknowledged for proper operation.
2. Wear protective clothing, including welding gloves and appropriate eye protection (See "Table 1-1 - Protective
Filters" on page 1-3). Place tip on workpiece and pull trigger. Arc will initiate and start cutting material.
• Standoff Cutting With Hand Torch
NOTE
For best performance and parts life, always
use the correct parts for the type of operation.
A. The torch can be comfortably held in one hand
or steadied with two hands. Position the hand
to press the Trigger on the torch handle. With
the hand torch, the hand may be positioned
close to the torch head for maximum control
or near the back end for maximum heat protec-
tion. Choose the holding technique that feels
most comfortable and allows good control
and movement.
NOTE
The tip should never come in contact with the
workpiece except during drag cutting operations.
B. Depending on the cutting operation, do one of
the following:
a). For drag cutting, place the tip on the plate
holding the torch at a angle to the plate so
that only one edge of the tip is in contact
with the plate. This prevents damage to the
tip during the piercing process.
b). For standoff cutting, hold the torch tip on
the workpiece, pull the trigger. After the
arc is initiated lift the tip to 1/8" - 3/8" (3-
4mm) off the work.
Art # A-03962
Trigger
Trigger Release
Figure 4-7 - Torch Trigger Release
A-00024_AB
Shield Cup
Torch
Standoff Distance
1/8" - 3/8" (3 - 9mm)
Figure 4-8 - Standoff Distance
3
4
Trigger
2
1
Trigger Release
Art # A-11504
Figure 4-9 - Standoff Cutting