Tweco 12mm Cutmaster - Manual (Page 27)

CUTMASTER 10MM, 12MM
Manual 0-5197AD 4-5 OPERATION
NOTE
When the shield cup is properly installed, there
is a slight gap between the shield cup and the
torch handle. Gas vents through this gap as
part of normal operation. DO NOT attempt to
force the shield cup to close this gap. Forcing
the shield cup against the torch head or torch
handle can damage components.
• Drag Cutting With a Hand Torch
Drag cutting works best on metal 1/4" (6mm) thick
or less.
NOTE
For best parts performance and life, always
use the correct parts for the type of operation.
A. Install the drag cutting tip and set the output
current.
B. 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.
C. Keep the torch in contact with the workpiece
during the cutting cycle.
D. Hold the torch away from your body.
E. Slide the trigger release toward the back of the
torch handle while simultaneously squeezing
the trigger. The arc will start.
Art # A-03962
Trigger
Trigger Release
Figure 4-10 - Torch Trigger Release
F. Place the torch tip on the work. The main arc
will transfer to the work.
NOTE
The gas preflow and postflow are a character-
istic of the Power Source and not a function
of the torch.
3
4
Art # A-03383
Trigger
2
1
Trigger Release
Figure 4-11 - Drag Cutting
G. Cut as usual. Simply release the trigger as-
sembly to stop cutting.
H. Follow normal recommended cutting practices
as provided herein.
3. Complete cutting operation.
NOTE
If the torch is lifted too far from the workpiece
while cutting, the main arc will stop and the
pilot arc will automatically restart.
4. Release the torch trigger.
a. Main arc stops.
5. Set the Power Source ON/OFF switch to OFF (down
position).
a. AC indicator
turns OFF.
6. Set the main power disconnect to OFF, or unplug
input power cord.
a. Input power is removed from the system.