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B-4
OPERATION
B-4
WELDING PROCESS
For any electrodes the procedures should be kept
within the rating of the machine. For electrode infor-
mation see the appropriate Lincoln publication.
STICK (CONSTANT CURRENT) WELDING
Connect welding cables to the "TO WORK” and
"ELECTRODE” studs. Start the engine. Set the
"Polarity” switch to the desired polarity. The “RANGE”
switch markings indicate the maximum current for that
range as well as the typical electrode size for that
range. The “OUTPUT” Control provides fine adjust-
ment of the welding current within the select range.
For maximum output within a selected range set the
“OUTPUT” Control at 10. For minimum output within a
selected range set the “OUTPUT” Control at 5. (“OUT-
PUT” Control settings below 5 may reduce arc stabili-
ty) For best overall welding performance set the
“RANGE” Switch to the lowest setting and the OUT-
PUT” Control near the maximum to achieve the
desired welding current.
RANGE SETTING TYPICAL CURRENT RANGE
ELECTRODE SIZE
The RANGER GXT can be used with a broad range of
AC and DC stick electrodes. See “Welding Tips 1”
included with the RANGER GXT for electrodes within
the rating of this unit and recommended welding cur-
rents of each.
TIG (CONSTANT CURRENT) WELDING
The Ranger GXT can be used in a wide variety of AC and DC
Tungsten Inert Gas (TIG) welding applications for AC TIG
Welding up to 200 amps and DC TIG welding up to 250 amps.
The K930 [ ] TIG Module installed on a Ranger GXT provides
high frequency and shielding gas control for AC and DC GTAW
(TIG) welding processes. The TIG Module allows full range out-
put control.
When using the Ranger GXT for AC TIG welding of aluminum
the following settings and electrodes are recommended:
For AC TIG Welding, the maximum TIG Welding out-
put currents on each range setting will be approxi-
mately 50% higher than those marked on the name-
plate. This is due to the special nature of the AC TIG
welding arc. Do not AC TIG weld on the 250 Amp set-
ting. The output may exceed the rating of the Ranger
GXT.
WIRE FEED WELDING PROCESSES
(CONSTANT VOLTAGE)
The Innershield
®
electrode recommended for use with
the RANGER GXT is NR
®
-211-MP. The electrode
sizes and welding ranges that can be used with the
RANGER GXT are shown in the following table:
The RANGER GXT is recommended for limited “MIG”
welding (GMAW - gas metal arc welding). The recom-
mended electrodes are .030” and .035” L-50 and L-56.
They must be used with a blended shielding gas such
as C25 (75% Argon - 25% CO
2
). The welding ranges
that can be used with the RANGER GXT are shown in
the following table:
ARC GOUGING
The RANGER GXT can be used for limited arc goug-
ing.
Set the Range switch to adjust output current to the
desired level for the gouging electrode being used
according to the ratings in the following table:
RANGER GXT
Diameter Wire Speed Approximate
(in.) Range In./Min. Current Range
.035 80 - 110 75A to 120A
.045 70 - 130 120A to 170A
.068 40 - 90 125A to 210A
5/64 50 - 75 180A to 235A
Diameter Wire Speed Approximate
(in.) Range In./Min. Current Range
.030 75 - 300 50A to 130A
.035 100 - 250 80A to 175A
.045 125 - 200 145A to 200A
SETTINGS FOR PURE TUNGSTEN
TUNGSTEN RANGE SWITCH APPROXIMATE
DIAMETER (in.) SETTINGS CURRENT RANGE
1/8 80 or 130 100 - 300 Amps
3/32 80 45 - 140 Amps
1/16 80 45 - 100 Amps
SETTINGS FOR 1% THORIATED TUNGSTEN
TUNGSTEN RANGE SWITCH APPROXIMATE
DIAMETER (in.) SETTINGS CURRENT RANGE
1/8 80, 130, or 180 80 - 225 Amps
3/32 80 or 130 50 - 180 Amps
1/16 80 45 - 120 Amps
ELECTRODE SETTING CURRENT RANGE (DC, electrode positive)
1/8 30 - 60 Amps
5/32 90 - 150 Amps
3/16 150 - 250 Amps
80 MAX.
130 MAX.
180 MAX.
250 MAX.
3/32
1/8
5/32
3/16
50 TO 80 AMPS
70 TO 130 AMPS
110 TO 180 AMPS
160 TO 250 AMPS