19
2.4.3 ST-23A SPOOL-ON-GUN TORCH, P/N 19164
(see F-14-353).
The Migmaster 250 unit is equipped with a built-in control
for the ST-23A Spool-On-Gun welding torch. The ST-23A is
a high performance, 250 ampere continuous duty spool-
on-gun torch designed for the mig welding process. It is
completely portable (up to 30-ft.), air-cooled and hand
operated, and weighs less than three (3) pounds. The gun
is equipped with (30) foot lines. For installation and opera-
tion, see Section 4.2.2.
MT-250SG Spool-On-Gun ...........................................P/N 36779
(Requires Adapter, P/N 36833) See F-15-380.
2.4.4 TORCH NOZZLES - See table below:
If a Spotwelding operation is to be used, it is recommended
that you also order a #12S Spotweld Nozzle,
P/N 999625.
2.4.2 DIGITAL VOLT/AMMETER MODULE,
P/N 32857.
This easy-to-install, plug-in module mounts in place of the
top blank cover plate of the upper-right front panel location
in the 250 unit. This unique meter module alternately displays
welding voltage and current (of the dial-set welding condi-
tion) every 4-seconds. Two L.E.D.’s labeled Amps and Volts
provided below the meter windows, alternately illuminate
to indicate which condition is being displayed. The voltage
indication is displayed in 1/10-volt increments (e.g.: 20.5),
while the current indication is usually displayed in three-
whole digits (e.g.: 225). After the torch trigger is released, the
meter will continue to ash for 20-seconds the last condition
used during welding. At the end of this time, the meter will
reset to zero. For installation see Section 3.10.
SECTION 2 INTRODUCTION
15
5.1 Liner Selection
Steel & Flux Core
0558001675 ........ .023 x 10,12,15' Liner*
37031 ........ .030 x 10,12,15' Liner*
0558002137 ........ .045 x 25' Liner
37032 ........ .035-.045 x 10,12,15' Liner*
37033 ........ .045-.052-1/16 x 10,12,15' Liner*
0558002138 ........ .052-1/16 x 25' Liner
0558001676 ........ 5/64 x 10,12,15' Liner*
0558002139 ........ 5/64 x 25' Liner
37034 ........ 3/32 x 10,12,15' Liner*
0558002140 ........ 3/32 x 25' Liner
952948 ........ 7/64-1/8 x 10,12,15' Liner*
Aluminum
37039** ........ .035-3/64 x 15' Poly Liner
37040** ........ 3/64-1/16 x 15' Poly Liner
*NOTE: Liner supplied 15' — must be trimmed to fit.
** Requires Jumper Liner Sleeve 0558003050
5.3 Control Plugs, Trigger Leads (Options)
0558001815 ................. Trigger Lead 7”, ESAB
0558002583 ................. Trigger Lead 24”, ESAB
0558001864 ................. Lincoln (LN 7,8,9,NAZ)
5.0 - OPTIONS
Nozzles
Standard Duty
0558001610 3/8" Standard 1/8" Recess Flush
0558001609 3/8" Standard Flush 1/8" Recess
0558001612 1/2" Standard 1/8" Recess Flush
0558001611 1/2" Standard Flush 1/8" Stick Out
0558001613 1/2" Standard 1/8" Stick Out 1/4" Stick Out
0558001614 5/8" Standard Flush 1/8" Stick Out
0558001615 5/8" Standard 1/8" Stick Out 1/4" Stick Out
Spot
0558001602 Spot Nozzle Brass 3/8"
Std. Duty Tip/Noz. Adapter
0558001608
Heavy Duty
0558001599 5/8" Heavy Duty 1/8" Recess Flush
0558001600 5/8" Heavy Duty 1/4" Recess 1/8" Recess
0558001598 5/8" Heavy Duty Flush 1/8" Stick Out
0558001601 5/8" Heavy Duty 1/8" Stick Out 1/4" Stick Out
0558001603 3/4" Heavy Duty 1/4" Recess 1/8" Recess
Spot
0558001602 Spot Nozzle Brass 1/4"
Heavy Duty Tip/Noz. Adapter
0558001888
All Tips are the Medium Length to give these relationships.
Tip Relationship Using
All Sizes Heavy Duty Tips
Except 5/64 & 3/32".
Tip Relationship Using All Sizes
Standard and 5/64 & 3/32"
Heavy Duty Tips
5.2 Power Pin Adaptors (Options)
0558001862 Lincoln
0558002313 L-TEC
Gun Master 250
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