Miller Spectrum 875 User Manual

. A complete Parts List is available at www.MillerWelds.com
OM-264259 Page 28
Ref. 803 640-A / 801 400-B / Ref. 254 087-A
6-7. Sequence Of Piercing Operation
! The pilot arc starts immediately
when trigger is pressed.
Connect work clamp to a clean,
paint-free location on workpiece, as
close to cutting area as possible.
. Unit automatically regulates pressure
to 75 psi (517 kPa) for cutting.
CUT GOUGE
. Recommended maximum piercing
capacity is 7/16 in (11 mm).
. Connect work clamp to portion of
workpiece that does not fall away after
being cut.
. For more information, go to MillerWelds.com.
Hold torch at approximately 45°
to the workpiece. Raise trigger
lock and press trigger. Pilot arc
starts.
Maintain approximately 90° torch
position to surface, and continue
cutting.
Release trigger. Postflow continues for
approx. 20 seconds after releasing trigger;
arc can be instantly restarted during postflow
by raising trigger lock and pressing trigger.
Rotate torch to upright position
approximately 90° to surface.
When arc has pierced through
workpiece, start cutting.
45°
90°

Miller Spectrum 875 Specifications

General

Amperage Output	20-60 A
CNC Interface	Optional
Gas Supply	Clean, dry, oil-free air or nitrogen
Input Frequency	50/60 Hz
Output Current Range	20-60 A
Welding Process	Plasma cutting
TIG Start	Not applicable
Rated Output	60 A
Cutting Capability	3/4 in (19 mm)
Cutting Capacity	1 in (25 mm)
Severance Capacity	1-1/4 in (32 mm)
Input Phase	1- or 3-Phase
Duty Cycle	60%