Tweco 20mm Cutmaster - Manual (Page 36)

CUTMASTER 20mm
OPERATION 4T-4 Manual 0-5078
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 charac-
teristic of the power supply and not a func-
tion of the torch.
3
4
Art # A-03383
Trigger
2
1
Trigger Release
6. Cut as usual. Simply release the trigger
assembly 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
workpiece, 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, posi-
tion 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 conduc-
tive 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.