Tweco A40 CutMaster - Manual (Page 44)

CUTMASTER A40
4T-6 OPERATION Manual 0-4978
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 comfortable and allows good control and
movement.
4. Keep the torch in contact with the workpiece 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 characteristic
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 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.
Piercing With Hand Torch
1. 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 technique that feels most
comfortable and allows good control and movement.
NOTE
The tip should never come in contact with the
workpiece except during drag cutting operations.
2. Angle the torch slightly to direct blowback particles
away from the torch tip (and operator) rather than
directly back into it until the pierce is complete.
3. In a portion of the unwanted metal start the pierce off
the cutting line and then continue the cut onto the line.
Hold the torch perpendicular to the workpiece after the
pierce is complete.
4. Hold the torch away from your body.
5. 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
6. Bring the torch within transfer distance to the work.
The main arc will transfer to the work, and the pilot arc
will shut OFF.