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-The fan should start.
-If the “Safety” LED is glowing, push the “Safety
Reset” button. If there is no problem, the LED
will go off. If there is a problem, refer to Step F
and the Troubleshooting Guide.
D. Set the Purge/Run switch to Purge.
-The air should start.
-The “Air Pressure” LED should be lit.
-Adjust the air regulator for 60 psi (413 kPa),
minimum while air is flowing.
E. Set the Purge/Run switch to Run.
-The air will continue to run for 20 seconds of
postflow. If the trigger is activated within this
time period, the pilot arc will immediately start.
F. When ready to cut, place the work lead on the
piece to be cut, place the torch near the work,
make certain all safety precautions have been
taken and pull the trigger.
-The air will flow for a preflow time of 2 seconds
and the pilot arc will start. (This is true unless
the machine is in postflow, then the preflow time
is skipped.)
-The “Output ON” LED will light.
-The pilot arc will run for 2.5 seconds and shut off
unless it is brought in contact with the work and
the arc is transferred.
-When the arc is transferred, cutting begins.
Finish the cut to be made and release the trigger.
G. When the trigger is released, the arc will stop.
-The air will continue to run for 20 seconds of
postflow. If the trigger is activated within this
time period, the pilot arc will immediately restart.
H.
If the “Safety” LED lights at any time, check the following:
• Check the assembly of the torch consumables.
If they are not properly in place then the
machine will not start.
• After the problem is found, reset the machine by
pressing the “Safety Reset” button. (It is
possible for electrical noise to trip the safety cir-
cuit on rare occasions. This should not be a
regular occurrence.)
• If the machine does not reset or continues to
trip, consult the Troubleshooting Section.
Pilot Arc Discussion:
The PRO-CUT has a smooth, continuous pilot arc.
The pilot arc is only a means of transferring the arc to
the workpiece for cutting. Repeated pilot arc starts, in
rapid succession, is not recommended as these starts
will generally reduce consumable life. Occasionally,
the pilot arc may sputter or start intermittently. This is
aggravated when the consumables are worn or the air
pressure is too high. Always keep in mind that the
pilot arc is designed to transfer the arc to the work-
piece and not for numerous starts without cutting.
Procedure Recommendations
When properly used, plasma arc cutting or gouging is
a very economical process.. Improper use will result
in a very high operating cost.
General
• Follow safety precautions as printed inside the
operating manual and on the machine.
• Use the drag cup when hand cutting at medium
or high output.
• Use the proper cutting or gouging procedures
referred to in procedures guideline.
• Use the shield cup with mechanized torches or
when hand cutting at low output.
Thin Gauge Sheet Metal:
Output set below mid-range.
• The torch should be dragged on the metal sur-
face, touching the nozzle lightly to the surface
after piercing a hole. Current control should be
set in the yellow range only.
• The S24114 Drag Cup should not be used at
very low outputs. It may cause erratic arc
action.
– 12 –
ELECTRIC SHOCK CAN KILL.
• Turn off machine at the disconnect
switch on the front of the machine
before tightening, cleaning or replacing
consumables.
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WARNING