PRODUCT DESCRIPTION
The PRO-CUT™ 125 is a constant current, single
range, continuous control plasma cutting system. The
system is one of the most sophisticated on the
market. It provides excellent starting characteristics,
cutting visibility and arc stability. The torch has a
patented safety mechanism which insures that the
consumables are in place before cutting or gouging.
This is extremely important due to the high voltages
involved.
The PRO-CUT 125 comes with an air regulator,
coarse air filter, oil coalescing filter, and pressure
gauge. The machine comes with a 25 ft. torch cable
or a 50 ft. torch cable and a spare parts kit. The
undercarriage is built-in and the unit is shipped
assembled except for the handle. The machine is
capable of cutting with compressed air or nitrogen.
Nitrogen is used to cut aluminum and other nonfer-
rous metals.
The PRO-CUT is controlled by a microprocessor-
based system. The machine performs rudimentary
self troubleshooting when started, which aids in field
servicing.
To enhance safety and protection, the 60 second
postflow period is monitored. During the first 12 sec-
onds of postflow, the pilot arc may be initialized with a
single trigger pull. After 12 seconds, the trigger must
be pulled twice to start the pilot arc. The second trig-
ger pull must follow the first within 1 second to initiate
the arc. This prevents accidental starting if the plasma
torch is resting in such a manner that the trigger is
depressed. The postflow time is reset only if the pilot
arc is initialized.
Special control circuitry detects when the nozzle is
touched to the workpiece. If the nozzle is touched to
the workpiece, the machine output is instantaneously
reduced which protects the consumables. When the
nozzle is removed form the workpiece, the output will
return to the set level. This feature protects the con-
sumables from accidental damage when cutting at
high currents.
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PREHEAT TEMPERATURE FOR
PLASMA CUTTING
Preheat temperature control is recommended for opti-
mum mechanical properties, crack resistance and
hardness control. This is particularly important on
high alloy steels and heat treated aluminum. Job con-
ditions, prevailing codes, alloy level, and other consid-
erations may also require preheat temperature con-
trol. The recommended minimum preheat tempera-
ture is a starting point. Higher temperatures may be
used as required by the job conditions and/or prevail-
ing codes. If cracking or excessive hardness occurs
on the cut face, higher preheat temperature may be
required. The recommended minimum preheat tem-
perature for plate thickness up to
1 1/4 inch is 70 (°F).
USER RESPONSIBILITY
Because design, fabrication, erection and cutting vari-
ables affect the results obtained in applying this type
of information, the serviceability of a product or struc-
ture is the responsibility of the user. Variations such
as plate chemistry, plate surface condition (oil, scale),
plate thickness, preheat, quench, gas type, gas flow
rate and equipment may produce results different than
those expected. Some adjustments to procedures
may be necessary to compensate for unique individ-
ual conditions. Test all procedures duplicating actual
field conditions.
