Tweco A80-A120 CutMaster - Manual (Page 37)

CUTMASTER A80, A120
Manual 0-5119 OPERATION
4T-5
NOTE
The tip should never come in contact with the
workpiece except during drag cutting operations.
2. Depending on the cutting operation, do one of
the following:
a. For edge starts, hold the torch perpendicu-
lar to the workpiece with the front of the tip
on the edge of the workpiece at the point
where the cut is to start.
b. For standoff cutting, hold the torch 1/8
- 3/8 in (3-9 mm) from the workpiece as
shown below.
A-00024_AB
Shield Cup
Torch
Standoff Distance
1/8" - 3/8" (3 - 9mm)
Standoff Distance
3. Hold the torch away from your body.
4. 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
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.