.
A complete Parts List is available at www.MillerWelds.com
OM-201 872 Page 20
Ref. 803 640-A / 801 400-B / Ref. 802 878
5-4. Plasma Cutting System Practices
Pulling rather than pushing the torch
makes cutting easier. Use a proper guide
or template for accurate cutting operations.
The pilot arc starts immediately
when trigger is pressed.
Maintain approximately a 90
°
angle to the
workpiece surface for proper cutting results.
Always connect work clamp to a clean,
paint-free location on metal workpiece, as
close to cutting area as possible.
.
Set correct air pressure for process:
75 PSI (517 kPa) for cutting,
60 PSI (414 kPa) for gouging.
90
°
DO NOT start pilot arc without cutting or
gouging as this shortens the service life
of the nozzle and electrode.
Sparks should pass through the workpiece
and out the bottom when cutting.
If sparks flare back from surface, this
usually is an indication that either travel
speed is too fast, amperage is set too low,
or consumables are worn.
When doing non-shielded cutting, maintain
approximately 1/8 in standoff between
electrode and surface.
1/8 in
(3.2 mm)
DO NOT put pressure on shield when
drag cutting; instead, slide shield along
the surface for proper cutting results.
Wt
