Tweco CutMaster 35mm 40mm - Manual (Page 37)

CUTMASTER 35mm, 40mm
Manual 0-5118 4T-5 OPERATION
Drag Cutting With a Hand Torch
Drag cutting works best on metal 1/4" (6 mm)
thick or less.
NOTE
Drag cutting can only be performed at 60
amps or less.
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. Posi-
tion 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.
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.
Piercing With Hand Torch
1. The torch can be comfortably held in one
hand or steadied with two hands. Posi-
tion 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 blow-
back particles away from the torch tip
(and operator) rather than directly back
into it until the pierce is complete.