PRO-POINT PROCUT 80 Manuel page 24

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4. Torch height too low. Reverse bevel. Tip may contact the work and
short out or damage the tip (Fig. 12).
CUTTING NOZZLE TIP SIZE AND CONDITION
The cutting nozzle's orifice focuses the plasma stream. It is important to use
the correct size tip for the amperage being used.
The size of the orifice dictates the width of the plasma stream. The low-amp
nozzle has a smaller orifice which maintains a narrow plasma stream at lower
settings for use on thin-gauge material.
A low-amp nozzle used with a high amperage setting will distort and
damage the nozzle beyond use. A high amperage nozzle used with lower
amperage will prevent the plasma stream from focusing correctly and
create a wider cut than intended.
The nozzle condition is critical to the
quality of the cut result. A worn or
damaged nozzle orifice will produce
a distorted plasma stream, resulting
in a poor cut quality (Fig. 13-1).
It is recommended to use a 3/64
in. tip with a setting of 0 to 40 amps and a 1/16 in. tip with a setting of
40 to 80 amps.
ELECTRODE CONDITION
A fixed gap is established between the electrode and the inside of the
cutting tip. Electrons arc across the gap, ionizing and super heating the
air creating the plasma stream. The electrode contains an insert in the
end made of a highly conductive material called hafnium. This insert
erodes with use and develops a pit
in the end of the electrode. As this
pit grows wider and deeper the
quality of the cut degrades (Fig.
14-1). Replacement will be
necessary.
AIR PRESSURE AND VOLUME
Air pressure, flow rate and air quality are critical to quality plasma
cutting and consumable life span (see Specifications).
The PROCUT 80 air pressure is pre-set at 75 PSI and requires a flow
rate of 6.67 CFM. The volume capacity of your compressor is important,
if you have a small compressor with exactly the same CFM rating as the
24
80A PROCUT 80 Plasma Cutter
For technical questions call 1-800-665-8685
13-1
Fig. 13
14-1
V1.0
Fig. 14