OPERATION | ||
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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 |
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80 MAX. | 3/32 | 50 TO 80 AMPS |
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130 MAX. | 1/8 | 70 TO 130 AMPS |
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180 MAX. | 5/32 | 110 TO 180 AMPS |
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250 MAX. | 3/16 | 160 TO 250 AMPS |
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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-
SETTINGS FOR PURE TUNGSTEN
TUNGSTEN | RANGE SWITCH | APPROXIMATE | |||
DIAMETER (in.) | SETTINGS | CURRENT RANGE | |||
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1/8 | 80 or 130 | 100 - 300 Amps | |||
3/32 | 80 | 45 | - | 140 | Amps |
1/16 | 80 | 45 | - | 100 | Amps |
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SETTINGS FOR 1% THORIATED TUNGSTEN
TUNGSTEN | RANGE SWITCH | APPROXIMATE | |||
DIAMETER (in.) | SETTINGS | CURRENT RANGE | |||
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1/8 | 80, 130, or 180 | 80 | - | 225 | Amps |
3/32 | 80 or 130 | 50 | - | 180 | Amps |
1/16 | 80 | 45 - 120 Amps | |||
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
| Diameter | Wire Speed | Approximate |
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| (in.) | Range In./Min. | Current Range |
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| .035 | 80 | - 110 | 75A to 120A |
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| .045 | 70 | - 130 | 120A to 170A |
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| .068 | 40 | - | 90 | 125A to 210A |
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| 5/64 | 50 | - | 75 | 180A to 235A |
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The RANGER GXT is recommended for limited “MIG” welding (GMAW - gas metal arc welding). The recom- mended electrodes are .030” and .035”
| Diameter | Wire Speed | Approximate |
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| (in.) | Range In./Min. | Current Range |
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| .030 | 75 | - 300 | 50A to 130A |
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| .035 | 100 | - 250 | 80A to 175A |
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| .045 | 125 | - 200 | 145A to 200A |
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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:
ELECTRODE SETTING | CURRENT RANGE (DC, electrode positive) | ||
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1/8 | 30 | - | 60 Amps |
5/32 | 90 | - | 150 Amps |
3/16 | 150 - 250 Amps | ||
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