18
2.3.6 RUNNING GEAR
The Migmaster 250 is equipped with a running gear w/
swiveled front wheels and a gas cylinder support. The rear
wheels are packed loose for shipping, but are easily installed,
see Section 3.8.
2.4 OPTIONAL ACCESSORIES
Fan-on-demand (autofan) Kit, P/N 16781
2.4.1 SPOT/STITCH/ANTI-STICK MODULE,
P/N 32858.
This easy-to-install, plug-in module mounts in place of
the lower blank cover plate of the upper-right front panel
location in the 250 unit. It enables the operator to use the
250 for Spot or Stitch or Continuous welding operations.
It also includes an adjustable Anti-Stick feature that allows
you to select various wire burnback times to prevent wire
from sticking in the puddle after a weld. For installation, see
Section 3.9 and for operating instructions see Section 4.2.
2.3.4 GUNMASTER 250 WELDING TORCH
(F15-612)
The lightweight air cooled welding gun included in selected
systems is supplied complete and ready to weld 0.035 in.
steel wire. It is built with a one piece service conduit and
includes a 45 degree gooseneck. Changing the contact tip
to 0.045 in. allows the use of the larger wire.
2.3.5 CONTROLS
The Migmaster 250 System can be used to weld hard and
aluminum wire with an optional ST-23A spool-gun torch.
An optional spot/stitch control allows a welder to spot or
stitch weld within a range of 0.4 to 3.5 seconds. The built-in
spool-on-gun adaptors and control, when used in conjunc-
tion with the optional ST-23A torch, permits aluminum wire
welding with the machine.
POWER SOURCE MIGMASTER 250
Rated Output
Duty Cycle, 208/230V Unit
208/230/380/400/460/575V Unit
Primary Input
Primary Input Amperes
Output Current Range
Maximum Open Circuit Volts
250 Amps @ 27 Volts d.c.
50% @ 60 Hz.; 40% @ 50 Hz.
35% for 208 through 400V; 50% for 460 & 575V
Single Phase 208/230; 208/230/380/400/460/575 Volts 50 60 Hz
208-71, 230-62, 380-37,400-36, 460-31, 575-25
30 to 280 Amps.
55 v.d.c.
FEEDER
Feed Type
Wire Sizes: Hard
Cored
Soft
Feed Rate
Push
0.023" (0.6mm) through 0.045" (1.2mm)
0.030" (0.8mm) through 1/16" (1.6mm)
0.035" (0.9mm) and 3/64" (1.2mm)
20-650 IPM
GUNMASTER 250 TORCH
Cooling Air
Gooseneck Angle 45 degrees
Rated 60% Duty Cycle
(DCRP) Amps: 200 w/Argon Mixtures, 300 w/CO
2
Conduit Length see section 2.3.1
PHYSICAL
Net Weight *210 lbs (95 Kg.)
Height *32.25 inches (819 mm)
Width *19.5 inches (495 mm)
Depth *40.0 inches (1016 mm)
*Includes running gear & bottle tray.
SECTION 2 INTRODUCTION
TABLE 1. SPECIFICATIONS
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