8611303
PROCUT45 PLASMA CUTTER
V1.1
30
For technical questions call 1-800-665-8685
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. 17-1).
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. 18-1).
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 PROCUT45 air pressure is pre-set at 4.5 PSI and requires a
flow rate of 6.0 CFM. The volume capacity of your compressor
is important, if you have a small compressor with exactly the
same l/min rating as the plasma, then the compressor will run
continuously when you are plasma cutting.
Fig. 18
Fig. 17
17-1
18-1
