THERMACUT EX-TRAFIRE 40SD, Operator'S Manual

Page: 38 / 72

EX-TRAFIRE
®
40SD
Operator Manual, Revision T-15 4-38
Hand torch cutting technique
Avoid unnecessary firing of the torch, each firing of the torch reduces the lifetime of the electrode
and nozzle�
When cutting, ensure the arc spray exits the underside of the work
piece�
Incomplete severance is indicated by an upward arc spray� This can
be caused by the following:
•
Excessive travel speed
•
Incorrect power settings
•
Incorrect gas pressure settings
•
Worn/damaged consumables
•
or by combination of any of the above
Hold the torch vertically and watch the arc while cutting along the
line�
Shielded consumables�
Make light contact between the shield and the work piece, pull the torch at
a steady travel speed�
•
Pulling the torch gives better control compared to pushing�
•
For cutting thin material, reduce the amperage to the optimum to achieve the highest cut
quality�
•
For straight line/bevel cutting, use a straight edge as a guide� To cut circles, use a template or
a circle cutting attachment�
•
Gas Post flow – After the torch trigger is released, the gas will continue to flow up to 30
seconds (according to adjusted cutting current) to cool the torch and consumables�
Note: The torch will be ready to restart by depressing the torch trigger during the post flow period�
To stop the post flow, depress the torch trigger quickly and release�
DANGER! Consumables can remain hot after the post-flow period�
Direction of cut
Direction of cut