Tweco CutMaster 12mm-20mm-25mm - Manual (Page 37)

CUTMASTER 12mm, 20mm, 25mm
Manual 0-5117 4T-5 OPERATION
Shield Cup With Straight Edge
The drag shield cup can be used with a non con-
ductive straight edge to make straight cuts by
hand.
WARNING
The straight edge must be non - conduc-
tive.
A-03539
Non-Conductive
Straight Edge
Cutting Guide
Using Drag Shield Cup With Straight Edge
The crown shield cup functions best when cutting
3/16 inch (4.7 mm) solid metal with relatively
smooth surface.
Drag Cutting With a Hand Torch
Drag cutting works best on metal 1/4" (6 mm)
thick or less.
NOTE
For best parts performance and life,
always use the correct parts for the type of
operation.
1. Install the drag cutting tip and set the output
current.
2. 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 protection. Choose the
holding technique that feels most comfort-
able and allows good control and move-
ment.
4. Keep the torch in contact with the work-
piece during the cutting cycle.
5. Hold the torch away from your body.
6. Slide the trigger release toward the back
of the torch handle while simultaneously
squeezing the trigger. The pilot arc will
start.
A-02986
Trigger
Trigger Release
7. Bring the torch within transfer distance to
the work. The main arc will transfer to the
work, and the pilot arc will shut OFF.
NOTE
The gas preflow and postflow are a char-
acteristic of the power supply and not a
function of the torch.
3
4
Art # A-03383
Trigger
2
1
Trigger Release
8. Cut as usual. Simply release the trigger
assembly to stop cutting.
9. Follow normal recommended cutting
practices as provided in the power supply
operator's manual.
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 opera-
tion. 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.