Tweco A40-A60 CutMaster - Manual (Page 39)

CUTMASTER A40, A60
Manual 0-5120 OPERATION 4T-5
A-02986
Trigger
Trigger Release
5. 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 character-
istic of the power supply and not a function of
the torch.
3
4
Art # A-03383
Trigger
2
1
Trigger Release
6. Cut as usual. Simply release the trigger as-
sembly to stop cutting.
7. 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 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.
8. For a consistent standoff height from the work-
piece, install the standoff guide by sliding it
onto the torch shield cup. Install the guide
with the legs at the sides of the shield cup
body to maintain good visibility of the cutting
arc. During operation, position the legs of the
standoff guide against the workpiece.
Shield Cup
Workpiece
Standoff Guide
Art # A-04034
Torch Tip
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-conductive.
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 protec-
tion. Choose the holding technique that feels
most comfortable and allows good control and
movement.